D — https://openresty.org | BeaverCheck Audit

Site Health

Score: 68 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Major barriers for users with disabilities — up to 15% of your audience.

Well-optimized for search — your content is discoverable.

Good server performance with room for optimization.

Mostly compliant — a few items need attention.

Missing metadata means poor previews on social media and search.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Google Workspace · 1679 peers

You 68

Avg 73

At average

0 50 100

Better than 2% of Google Workspace sites See full Google Workspace benchmark →

Highlight.js · 28 peers

You 68

Avg 73

At average

0 50 100

Better than 3% of Highlight.js sites See full Highlight.js benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

Cookie 'userid' is missing the Secure flag

Security gaps expose your site and users to attacks, eroding trust.

Security › Cookie Security

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

Page weighs 16.6 MB (16.4 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fopenresty.org)](https://beavercheck.com/results/562d3f5a-e602-4f48-939f-f26278f6585a)

HTML

<a href="https://beavercheck.com/results/562d3f5a-e602-4f48-939f-f26278f6585a"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fopenresty.org" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fopenresty.org

This badge auto-updates with your latest scan result.

What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 43.5s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. The 4 security gaps leave your users exposed — modern browsers increasingly warn visitors about insecure sites. Addressing the critical issues below would have the most immediate impact on your user trust.

4 security gaps detected — browsers may warn visitors about your site.

Your LCP is 43.5s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

Could reach Estimate based on resolving critical issues

Conversion Barriers

2 critical 7 warning

9 barrier(s) likely increasing bounce by ~30%.

Speed (1)

Page takes 43.5s to load

+12% bounce

Users abandon at ~3s — you're 41.0s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (1)

1 form field(s) without a label

+2% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Content (2)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Navigation (3)

9 link(s) with generic text ("click here", "read more")

+1% bounce

Screen-reader users navigating by link list see no context — and search engines can't infer relevance

Fix: Rewrite with descriptive phrases that identify the destination

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

40 broken link(s) on the page

+5% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

$400 investment → $4.13/month returns + USD 157,500 risk avoided

Payback period: > 2 years First-year ROI: -88%

Investment

$400

4h · 5 findings

Monthly returns

$4.13 /mo

~$50 / year

Bandwidth savings $4.13

Regulatory risk avoided

USD 157,500

if kept compliant

ADA Title III USD 150,000
CCPA/CPRA USD 7,500

$200 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

$400

4.0 developer hours at $100/hr

Based on United States rates ($100/hr)

Quick wins

$200 4 fixes in ~120 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

$13,129 / month at risk

~$157,550 / year if left unfixed

Compliance Risk

$157,500

ADA Title IIICCPA/CPRA

No privacy policy link detected
CCPA/CPRA: USD 2,500 – USD 7,500
Trackers detected but no cookie policy found
CCPA/CPRA: USD 2,500 – USD 7,500
Trackers detected but no privacy policy found
CCPA/CPRA: USD 2,500 – USD 7,500

+7 more

Bandwidth Waste

$4.13 /mo

51565.5 MB/mo × 0.080 USD/GB

Optimize transfer: save ~5.2 MB per page load
Saves $4.13/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.03 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

43.54 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

7 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.55 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

43.55 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
openresty.org/images/header-images/xray-vulnerability-scanning.jpg	3600.0 s	3.0 MiB
openresty.org/images/header-images/xray-dynamic-advantage.jpg	3600.0 s	2.6 MiB
openresty.org/images/header-images/edge-proxy-protocol.jpg	3600.0 s	2.1 MiB
openresty.org/images/header-images/nginx-prod-mem-leak.jpg	3600.0 s	1.8 MiB
openresty.org/images/header-images/what-is-openresty-xray.jpg	3600.0 s	1.5 MiB
openresty.org/images/header-images/what-is-openresty-edge.jpg	3600.0 s	1.4 MiB
openresty.org/images/header-images/edge-gslb-what.jpg	3600.0 s	1.1 MiB
openresty.org/images/header-images/edge-zstd.jpg	3600.0 s	350.9 KiB
openresty.org/images/header-images/xray-gzip-cpu.jpg	3600.0 s	335.2 KiB
openresty.org/images/header-images/xray-p99.jpg	3600.0 s	315.9 KiB
openresty.org/images/header-images/xray-keepalive.jpg	3600.0 s	307.3 KiB
openresty.org/images/header-images/luajit-plus.jpg	3600.0 s	301.6 KiB
openresty.org/images/header-images/xray-java-mem.jpg	3600.0 s	278.5 KiB
openresty.org/images/header-images/why-edge-webhook.jpg	3600.0 s	251.3 KiB
openresty.org/images/header-images/edge-or-comparison.jpg	3600.0 s	241.9 KiB
openresty.org/images/header-images/why-edge-waf.jpg	3600.0 s	209.3 KiB
openresty.org/js/jquery.min.js	3600.0 s	38.3 KiB
openresty.org/images/bg-grid.png	3600.0 s	29.2 KiB
openresty.org/images/header-images/edge-cdn-benefit.jpg	3600.0 s	24.9 KiB
openresty.org/js/highlight.pack.js	3600.0 s	21.7 KiB
openresty.org/images/header-images/xray-rsa-cpu.jpg	3600.0 s	21.5 KiB
ssl.google-analytics.com/ga.js	7200.0 s	17.4 KiB
openresty.org/images/logo.png	3600.0 s	16.1 KiB
openresty.org/images/header-images/xray-logo.jpg	3600.0 s	7.6 KiB
openresty.org/css/main.css	3600.0 s	6.1 KiB
openresty.org/images/donate_paypal.gif	3600.0 s	5.7 KiB
openresty.org/images/logo.webp	3600.0 s	5.6 KiB
openresty.org/css/jquery.modal.css	3600.0 s	2.2 KiB
openresty.org/js/jquery.modal.min.js	3600.0 s	2.1 KiB
openresty.org/images/ico-github.png	3600.0 s	2.0 KiB
openresty.org/images/ico-search.png	3600.0 s	1.6 KiB
openresty.org/images/rocket.svg	3600.0 s	1.2 KiB
openresty.org/images/flarum.png	3600.0 s	1.2 KiB
openresty.org/js/main.js	3600.0 s	1001 B
openresty.org/images/search.svg	3600.0 s	897 B
openresty.org/css/github.css	3600.0 s	808 B
openresty.org/css/fonts.css	3600.0 s	756 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
openresty.org/fonts/Open-Sans-700italic/Open-Sans-700italic.woff2	525 ms
openresty.org/fonts/Open-Sans-italic/Open-Sans-italic.woff2	525 ms
openresty.org/fonts/Open-Sans-regular/Open-Sans-regular.woff2	520 ms
openresty.org/fonts/Open-Sans-700/Open-Sans-700.woff2	520 ms
openresty.org/fonts/Open-Sans-300/Open-Sans-300.woff2	520 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-vulnerability-scanning.jpg	3.0 MiB	3.0 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-dynamic-advantage.jpg	2.6 MiB	2.6 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-proxy-protocol.jpg	2.1 MiB	2.1 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/nginx-prod-mem-leak.jpg	1.8 MiB	1.8 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/what-is-openresty-xray.jpg	1.5 MiB	1.5 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/what-is-openresty-edge.jpg	1.4 MiB	1.4 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-gslb-what.jpg	1.1 MiB	1.1 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-zstd.jpg	350.6 KiB	345.7 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-gzip-cpu.jpg	334.9 KiB	329.9 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-p99.jpg	315.6 KiB	310.7 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-keepalive.jpg	307.0 KiB	302.1 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/luajit-plus.jpg	301.3 KiB	296.4 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-java-mem.jpg	278.2 KiB	273.3 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/why-edge-webhook.jpg	251.0 KiB	246.1 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-or-comparison.jpg	241.6 KiB	236.7 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/why-edge-waf.jpg	209.0 KiB	204.1 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-cdn-benefit.jpg	24.6 KiB	19.7 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-rsa-cpu.jpg	21.2 KiB	16.3 KiB
header > p.site-name > a > img `header > p.site-name > a > img`	openresty.org/images/logo.png	15.8 KiB	15.2 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-logo.jpg	7.3 KiB	5.8 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-20-SECTION

nodeLabel: OpenResty® is a dynamic web platform based on NGINX and LuaJIT.

path: 1,HTML,1,BODY,2,SECTION

selector: body > section#intro

snippet: <section id="intro">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
openresty.org/css/jquery.modal.css	2.2 KiB
openresty.org/css/github.css	808 B
openresty.org/css/main.css	6.1 KiB	150 ms
openresty.org/css/fonts.css	756 B

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.2 s

URL	Time Spent
openresty.org/	1.2 s
openresty.org/en/	0.0 ms

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 150 ms 49.8 KiB

URL	Transfer Size	Est Savings
openresty.org/js/jquery.min.js	38.0 KiB	25.4 KiB
static.openresty.com/swiper/5.2.1/js/swiper.min.js	41.9 KiB	24.4 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
openresty.org/images/header-images/xray-vulnerability-scanning.jpg	3.0 MiB
openresty.org/images/header-images/xray-dynamic-advantage.jpg	2.6 MiB
openresty.org/images/header-images/edge-proxy-protocol.jpg	2.1 MiB
openresty.org/images/header-images/nginx-prod-mem-leak.jpg	1.8 MiB
openresty.org/images/header-images/what-is-openresty-xray.jpg	1.5 MiB
openresty.org/images/header-images/what-is-openresty-edge.jpg	1.4 MiB
openresty.org/images/header-images/edge-gslb-what.jpg	1.1 MiB
openresty.org/images/header-images/edge-zstd.jpg	350.9 KiB
openresty.org/images/header-images/xray-gzip-cpu.jpg	335.2 KiB
openresty.org/images/header-images/xray-p99.jpg	315.9 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
header > p.site-name > a > img `header > p.site-name > a > img`	openresty.org/images/logo.png
header > p.right > a > img.dark-img `header > p.right > a > img.dark-img`	openresty.org/images/flarum.png
header > p.right > a > img `header > p.right > a > img`	openresty.org/images/ico-github.png
header > p.right > a.enterprise-button > img `header > p.right > a.enterprise-button > img`	openresty.org/images/rocket.svg

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Max Potential First Input Delay 60 ms

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●JavaScript execution time 0.2 s

●Minimizes main-thread work 2.0 s

●Avoid long main-thread tasks 3 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 10 ms

●Server Backend Latencies 420 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 40 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

○Avoid large layout shifts

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more about valid ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
OpenResty® Scalable Web Platform by Extending NGINX with Lua Contribute on Git… `body > header`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Installation `nav#nav > ul > li > a`
YouTube Channel `nav#nav > ul > li > a`
Video Tutorials `nav#nav > ul > li > a`
Enterprise Solutions `nav#nav > ul > li > a`
Getting Started `nav#nav > ul > li > a`
Upgrading `nav#nav > ul > li > a`
Changes `nav#nav > ul > li > a`
Events `nav#nav > ul > li > a`
Components `nav#nav > ul > li > a`
Community `nav#nav > ul > li > a`
Benchmark `nav#nav > ul > li > a`
Contact us `nav#nav > ul > li > a`
Debugging `nav#nav > ul > li > a`
Donate Online `nav#nav > ul > li > a`
Donors `nav#nav > ul > li > a`
eBooks `nav#nav > ul > li > a`
FAQ `nav#nav > ul > li > a`
Getting Involved `nav#nav > ul > li > a`
Presentations `nav#nav > ul > li > a`
Profiling `nav#nav > ul > li > a`
Quality Assurance `nav#nav > ul > li > a`
Resources `nav#nav > ul > li > a`
Samples `nav#nav > ul > li > a`
User Survey `nav#nav > ul > li > a`
About `nav#nav > ul > li > a`
中文站 `nav#nav > ul > li > a`
OpenResty.com `nav#nav > ul > li > a`
OpenResty 1.29.2.3 `div.news > div.news-item > div.news-description > a`
OpenResty 1.27.1.2 `div.news > div.news-item > div.news-description > a`
Binary Evidence-Driven Vulnerability Scanning: Eliminating False Positives with… `div.news > div.news-item > div.news-description > a`
OpenResty XRay Version 26.2.1. Now Available `div.news > div.news-item > div.news-description > a`
End-to-End Client Real IP Passthrough in OpenResty Edge `div.news > div.news-item > div.news-description > a`
How OpenResty XRay Enables Full-Stack Dynamic Tracing in Production `div.news > div.news-item > div.news-description > a`
What is OpenResty Edge `div.news > div.news-item > div.news-description > a`
Introduction to OpenResty XRay `div.news > div.news-item > div.news-description > a`
Nginx `div.item > div.body > p > a`
LuaJIT `div.item > div.body > p > a`
3rd-party Nginx modules `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Components `div.item > div.body > p > a`
GettingStarted `div.item > div.body > p > a`
Download `div.item > div.body > p > a`
Community `div.item > div.body > p > a`
OpenResty Inc. `div.item > div.body > p > a`
26 MAR 2026 `div#timeline > ul > li > h3`
Changes `li > ul > li > a`
Download `li > ul > li > a`
25 MAR 2026 `div#timeline > ul > li > h3`
OpenResty 1.29.2.3 Released `li > ul > li > a`
ChangeLog for 1.29.2.x `li > ul > li > a`
03 MAR 2026 `div#timeline > ul > li > h3`
OpenResty 1.29.2.1 Released `li > ul > li > a`
28 FEB 2026 `div#timeline > ul > li > h3`
OpenResty® Linux Packages `li > ul > li > a`
21 OCT 2025 `div#timeline > ul > li > h3`
OpenResty® EC2 Test Cluster `li > ul > li > a`
16 JUL 2025 `div#timeline > ul > li > h3`
Lua Cjson Library `li > ul > li > a`
03 APR 2025 `div#timeline > ul > li > h3`
OpenResty 1.27.1.2 Released `li > ul > li > a`
31 MAR 2025 `div#timeline > ul > li > h3`
ChangeLog for 1.27.1.x `li > ul > li > a`
17 OCT 2024 `div#timeline > ul > li > h3`
OpenResty 1.27.1.1 Released `li > ul > li > a`
21 JUL 2024 `div#timeline > ul > li > h3`
ChangeLog for 1.19.9.x `li > ul > li > a`
OpenResty 1.25.3.2 Released `li > ul > li > a`
ChangeLog for 1.25.3.x `li > ul > li > a`
OpenResty 1.21.4.4 Released `li > ul > li > a`
ChangeLog for 1.21.4.x `li > ul > li > a`
OpenResty 1.19.9.2 Released `li > ul > li > a`
OpenResty® is a registered trademark owned by OpenResty Inc. `body > div.content-footer > div.footer > p`
OpenResty Inc `div.content-footer > div.footer > p > a`
Copyright © 2017, 2018, 2019, 2020, 2021, 2022 by Yichun Zhang (agentzh) `body > div.content-footer > div.footer > p`
100% Powered by OpenResty and PostgreSQL ( view the source code of this site) `body > div.content-footer > div.footer > p`
view the source code of this site `div.content-footer > div.footer > p > a`

These are opportunities to improve the legibility of your content.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header > p.site-name > a > img `header > p.site-name > a > img`
header > p.right > a > img `header > p.right > a > img`
header > p.right > a > img.dark-img `header > p.right > a > img.dark-img`
header > p.right > a.enterprise-button > img `header > p.right > a.enterprise-button > img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > header > p.site-name > a `body > header > p.site-name > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Go to slide 1 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 2 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 3 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 4 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 5 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 6 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 7 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 8 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 9 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 10 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 11 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 12 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 13 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 14 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 15 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 16 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 17 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 18 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 19 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 20 `div#swiper-parent > div#article-carousel > div.swiper-pagination > span.swiper-pagination-bullet`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●`<input type="image">` elements have `[alt]` text

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●`button`, `link`, and `menuitem` elements have accessible names

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○Buttons have an accessible name

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/xray-vulnerability-scanning.jpg	23 x 18 (1.28)	1792 x 1030 (1.74)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-vulnerability-scanning.jpg	232 x 130 (1.78)	1792 x 1030 (1.74)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/xray-dynamic-advantage.jpg	23 x 18 (1.28)	1794 x 936 (1.92)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-dynamic-advantage.jpg	232 x 130 (1.78)	1794 x 936 (1.92)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/edge-proxy-protocol.jpg	23 x 18 (1.28)	1634 x 1000 (1.63)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-proxy-protocol.jpg	232 x 130 (1.78)	1634 x 1000 (1.63)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/what-is-openresty-xray.jpg	23 x 18 (1.28)	1370 x 770 (1.78)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/what-is-openresty-edge.jpg	23 x 18 (1.28)	1366 x 770 (1.77)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-or-comparison.jpg	232 x 130 (1.78)	518 x 260 (1.99)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/luajit-plus.jpg	232 x 130 (1.78)	487 x 260 (1.87)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-zstd.jpg	232 x 130 (1.78)	486 x 260 (1.87)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-p99.jpg	232 x 130 (1.78)	472 x 260 (1.82)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/xray-logo.jpg	23 x 18 (1.28)	462 x 260 (1.78)
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`	openresty.org/images/logo.webp	23 x 18 (1.28)	156 x 145 (1.08)
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`	openresty.org/images/logo.webp	23 x 18 (1.28)	156 x 145 (1.08)

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
heatmap.openresty.com/clickheat/js/clickheat.js	`Failed to load resource: net::ERR_CERT_DATE_INVALID`
ws.zoominfo.com/pixel/63bd97fc4e23807e8ea36b95	`Failed to load resource: the server responded with a status of 404 ()`
openresty.org/en/ line 409, col 0	`Refused to execute script from 'https://ws.zoominfo.com/pixel/63bd97fc4e23807e8ea36b95' because its MIME type ('') is not executable, and strict MIME type checking is enabled.`

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header > p.site-name > a > img `header > p.site-name > a > img`
header > p.right > a > img `header > p.right > a > img`
header > p.right > a > img.dark-img `header > p.right > a > img.dark-img`
header > p.right > a.enterprise-button > img `header > p.right > a.enterprise-button > img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●Document has a valid `hreflang`

○robots.txt is valid

○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

760 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.25 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

35 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.087

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

986 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.25 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
openresty.org/images/header-images/xray-vulnerability-scanning.jpg	3600.0 s	3.0 MiB
openresty.org/images/header-images/xray-dynamic-advantage.jpg	3600.0 s	2.6 MiB
openresty.org/images/header-images/edge-proxy-protocol.jpg	3600.0 s	2.1 MiB
openresty.org/images/header-images/nginx-prod-mem-leak.jpg	3600.0 s	1.8 MiB
openresty.org/images/header-images/what-is-openresty-xray.jpg	3600.0 s	1.5 MiB
openresty.org/images/header-images/what-is-openresty-edge.jpg	3600.0 s	1.4 MiB
openresty.org/images/header-images/edge-gslb-what.jpg	3600.0 s	1.1 MiB
openresty.org/images/header-images/edge-zstd.jpg	3600.0 s	350.9 KiB
openresty.org/images/header-images/xray-gzip-cpu.jpg	3600.0 s	335.2 KiB
openresty.org/images/header-images/xray-p99.jpg	3600.0 s	315.9 KiB
openresty.org/images/header-images/xray-keepalive.jpg	3600.0 s	307.3 KiB
openresty.org/images/header-images/luajit-plus.jpg	3600.0 s	301.6 KiB
openresty.org/images/header-images/xray-java-mem.jpg	3600.0 s	278.5 KiB
openresty.org/images/header-images/why-edge-webhook.jpg	3600.0 s	251.3 KiB
openresty.org/images/header-images/edge-or-comparison.jpg	3600.0 s	241.9 KiB
openresty.org/images/header-images/why-edge-waf.jpg	3600.0 s	209.3 KiB
openresty.org/images/media-server.png	3600.0 s	102.5 KiB
openresty.org/js/jquery.min.js	3600.0 s	38.3 KiB
openresty.org/images/bg-grid.png	3600.0 s	29.2 KiB
openresty.org/images/header-images/edge-cdn-benefit.jpg	3600.0 s	24.9 KiB
openresty.org/js/highlight.pack.js	3600.0 s	21.7 KiB
openresty.org/images/header-images/xray-rsa-cpu.jpg	3600.0 s	21.5 KiB
ssl.google-analytics.com/ga.js	7200.0 s	17.4 KiB
openresty.org/images/logo.png	3600.0 s	16.1 KiB
openresty.org/images/header-images/xray-logo.jpg	3600.0 s	7.6 KiB
openresty.org/css/main.css	3600.0 s	6.1 KiB
openresty.org/images/donate_paypal.gif	3600.0 s	5.7 KiB
openresty.org/images/logo.webp	3600.0 s	5.6 KiB
openresty.org/css/jquery.modal.css	3600.0 s	2.2 KiB
openresty.org/js/jquery.modal.min.js	3600.0 s	2.1 KiB
openresty.org/images/ico-github.png	3600.0 s	2.0 KiB
openresty.org/images/ico-search.png	3600.0 s	1.6 KiB
openresty.org/images/rocket.svg	3600.0 s	1.2 KiB
openresty.org/images/flarum.png	3600.0 s	1.2 KiB
openresty.org/js/main.js	3600.0 s	1001 B
openresty.org/images/search.svg	3600.0 s	898 B
openresty.org/css/github.css	3600.0 s	808 B
openresty.org/css/fonts.css	3600.0 s	756 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
openresty.org/fonts/Open-Sans-italic/Open-Sans-italic.woff2	535 ms
openresty.org/fonts/Open-Sans-700italic/Open-Sans-700italic.woff2	530 ms
openresty.org/fonts/Open-Sans-300/Open-Sans-300.woff2	525 ms
openresty.org/fonts/Open-Sans-700/Open-Sans-700.woff2	520 ms
openresty.org/fonts/Open-Sans-regular/Open-Sans-regular.woff2	515 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-vulnerability-scanning.jpg	3.0 MiB	3.0 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-dynamic-advantage.jpg	2.6 MiB	2.6 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-proxy-protocol.jpg	2.1 MiB	2.1 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/nginx-prod-mem-leak.jpg	1.8 MiB	1.8 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/what-is-openresty-xray.jpg	1.5 MiB	1.5 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/what-is-openresty-edge.jpg	1.4 MiB	1.4 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-gslb-what.jpg	1.1 MiB	1.1 MiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-zstd.jpg	350.6 KiB	346.8 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-gzip-cpu.jpg	334.9 KiB	331.0 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-p99.jpg	315.6 KiB	311.7 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-keepalive.jpg	307.0 KiB	303.1 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/luajit-plus.jpg	301.3 KiB	297.4 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-java-mem.jpg	278.2 KiB	274.4 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/why-edge-webhook.jpg	251.0 KiB	247.1 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-or-comparison.jpg	241.6 KiB	237.7 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/why-edge-waf.jpg	209.0 KiB	205.2 KiB
OpenResty® is a dynamic web platform based on NGINX and LuaJIT. `body > section#intro > div.text`	openresty.org/images/media-server.png	102.2 KiB	89.2 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-cdn-benefit.jpg	24.6 KiB	20.8 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-rsa-cpu.jpg	21.2 KiB	17.3 KiB
header > p.site-name > a > img `header > p.site-name > a > img`	openresty.org/images/logo.png	15.8 KiB	15.2 KiB
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-logo.jpg	7.3 KiB	6.4 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-21-SECTION

nodeLabel: OpenResty® is a dynamic web platform based on NGINX and LuaJIT.

path: 1,HTML,1,BODY,2,SECTION

selector: body > section#intro

snippet: <section id="intro">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
openresty.org/css/jquery.modal.css	2.2 KiB
openresty.org/css/github.css	808 B
openresty.org/css/main.css	6.1 KiB
openresty.org/css/fonts.css	756 B

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 40 ms 49.8 KiB

URL	Transfer Size	Est Savings
openresty.org/js/jquery.min.js	38.0 KiB	25.4 KiB
static.openresty.com/swiper/5.2.1/js/swiper.min.js	41.9 KiB	24.4 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
openresty.org/images/header-images/xray-vulnerability-scanning.jpg	3.0 MiB
openresty.org/images/header-images/xray-dynamic-advantage.jpg	2.6 MiB
openresty.org/images/header-images/edge-proxy-protocol.jpg	2.1 MiB
openresty.org/images/header-images/nginx-prod-mem-leak.jpg	1.8 MiB
openresty.org/images/header-images/what-is-openresty-xray.jpg	1.5 MiB
openresty.org/images/header-images/what-is-openresty-edge.jpg	1.4 MiB
openresty.org/images/header-images/edge-gslb-what.jpg	1.1 MiB
openresty.org/images/header-images/edge-zstd.jpg	350.9 KiB
openresty.org/images/header-images/xray-gzip-cpu.jpg	335.2 KiB
openresty.org/images/header-images/xray-p99.jpg	315.9 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
header > p.site-name > a > img `header > p.site-name > a > img`	openresty.org/images/logo.png
header > p.right > a > img.dark-img `header > p.right > a > img.dark-img`	openresty.org/images/flarum.png
header > p.right > a > img `header > p.right > a > img`	openresty.org/images/ico-github.png
header > p.right > a.enterprise-button > img `header > p.right > a.enterprise-button > img`	openresty.org/images/rocket.svg

More information about the performance of your application. These numbers don't directly affect the Performance score.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 720 ms

URL	Time Spent
openresty.org/	720 ms
openresty.org/en/	0.0 ms

●Max Potential First Input Delay 90 ms

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Time to Interactive 1.2 s

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●JavaScript execution time 0.0 s

●Minimizes main-thread work 0.7 s

●Avoid long main-thread tasks 1 long task found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 10 ms

●Server Backend Latencies 520 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 50 ms

●Avoid large layout shifts 4 layout shifts found

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

Accessibility

ARIA

ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more about valid ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
OpenResty® Scalable Web Platform by Extending NGINX with Lua Contribute on Gi… `body > header`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Installation `nav#nav > ul > li > a`
YouTube Channel `nav#nav > ul > li > a`
Video Tutorials `nav#nav > ul > li > a`
Enterprise Solutions `nav#nav > ul > li > a`
Getting Started `nav#nav > ul > li > a`
Upgrading `nav#nav > ul > li > a`
Changes `nav#nav > ul > li > a`
Events `nav#nav > ul > li > a`
Components `nav#nav > ul > li > a`
Community `nav#nav > ul > li > a`
Benchmark `nav#nav > ul > li > a`
Contact us `nav#nav > ul > li > a`
Debugging `nav#nav > ul > li > a`
Donate Online `nav#nav > ul > li > a`
Donors `nav#nav > ul > li > a`
eBooks `nav#nav > ul > li > a`
FAQ `nav#nav > ul > li > a`
Getting Involved `nav#nav > ul > li > a`
Presentations `nav#nav > ul > li > a`
Profiling `nav#nav > ul > li > a`
Quality Assurance `nav#nav > ul > li > a`
Resources `nav#nav > ul > li > a`
Samples `nav#nav > ul > li > a`
User Survey `nav#nav > ul > li > a`
About `nav#nav > ul > li > a`
中文站 `nav#nav > ul > li > a`
OpenResty.com `nav#nav > ul > li > a`
OpenResty 1.29.2.3 `div.news > div.news-item > div.news-description > a`
OpenResty 1.27.1.2 `div.news > div.news-item > div.news-description > a`
Binary Evidence-Driven Vulnerability Scanning: Eliminating False Positives with… `div.news > div.news-item > div.news-description > a`
OpenResty XRay Version 26.2.1. Now Available `div.news > div.news-item > div.news-description > a`
End-to-End Client Real IP Passthrough in OpenResty Edge `div.news > div.news-item > div.news-description > a`
How OpenResty XRay Enables Full-Stack Dynamic Tracing in Production `div.news > div.news-item > div.news-description > a`
What is OpenResty Edge `div.news > div.news-item > div.news-description > a`
Introduction to OpenResty XRay `div.news > div.news-item > div.news-description > a`
Nginx `div.item > div.body > p > a`
LuaJIT `div.item > div.body > p > a`
3rd-party Nginx modules `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Nginx `div.item > div.body > p > a`
Components `div.item > div.body > p > a`
GettingStarted `div.item > div.body > p > a`
Download `div.item > div.body > p > a`
Community `div.item > div.body > p > a`
OpenResty Inc. `div.item > div.body > p > a`
Binary Evidence-Driven Vulnerability Scanning: Eliminating False Positives with… `div.swiper-slide > a.article-item > div.article-text > p.blog-title`
OpenResty XRay Version 26.2.1. Now Available `div.swiper-slide > a.article-item > div.article-text > p.blog-title`
End-to-End Client Real IP Passthrough in OpenResty Edge `div.swiper-slide > a.article-item > div.article-text > p.blog-title`
26 MAR 2026 `div#timeline > ul > li > h3`
Changes `li > ul > li > a`
Download `li > ul > li > a`
25 MAR 2026 `div#timeline > ul > li > h3`
OpenResty 1.29.2.3 Released `li > ul > li > a`
ChangeLog for 1.29.2.x `li > ul > li > a`
03 MAR 2026 `div#timeline > ul > li > h3`
OpenResty 1.29.2.1 Released `li > ul > li > a`
28 FEB 2026 `div#timeline > ul > li > h3`
OpenResty® Linux Packages `li > ul > li > a`
21 OCT 2025 `div#timeline > ul > li > h3`
OpenResty® EC2 Test Cluster `li > ul > li > a`
16 JUL 2025 `div#timeline > ul > li > h3`
Lua Cjson Library `li > ul > li > a`
03 APR 2025 `div#timeline > ul > li > h3`
OpenResty 1.27.1.2 Released `li > ul > li > a`
31 MAR 2025 `div#timeline > ul > li > h3`
ChangeLog for 1.27.1.x `li > ul > li > a`
17 OCT 2024 `div#timeline > ul > li > h3`
OpenResty 1.27.1.1 Released `li > ul > li > a`
21 JUL 2024 `div#timeline > ul > li > h3`
ChangeLog for 1.19.9.x `li > ul > li > a`
OpenResty 1.25.3.2 Released `li > ul > li > a`
ChangeLog for 1.25.3.x `li > ul > li > a`
OpenResty 1.21.4.4 Released `li > ul > li > a`
ChangeLog for 1.21.4.x `li > ul > li > a`
OpenResty 1.19.9.2 Released `li > ul > li > a`
OpenResty® is a registered trademark owned by OpenResty Inc. `body > div.content-footer > div.footer > p`
OpenResty Inc `div.content-footer > div.footer > p > a`
Copyright © 2017, 2018, 2019, 2020, 2021, 2022 by Yichun Zhang (agentzh) `body > div.content-footer > div.footer > p`
100% Powered by OpenResty and PostgreSQL ( view the source code of this site) `body > div.content-footer > div.footer > p`
view the source code of this site `div.content-footer > div.footer > p > a`

These are opportunities to improve the legibility of your content.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header > p.site-name > a > img `header > p.site-name > a > img`
header > p.right > a > img `header > p.right > a > img`
header > p.right > a > img.dark-img `header > p.right > a > img.dark-img`
header > p.right > a.enterprise-button > img `header > p.right > a.enterprise-button > img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > header > p.site-name > a `body > header > p.site-name > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`
section#main > div.news > div.news-item > a `section#main > div.news > div.news-item > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●`<input type="image">` elements have `[alt]` text

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●`button`, `link`, and `menuitem` elements have accessible names

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○Buttons have an accessible name

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/xray-vulnerability-scanning.jpg	23 x 18 (1.28)	1792 x 1030 (1.74)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-vulnerability-scanning.jpg	182 x 130 (1.40)	1792 x 1030 (1.74)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/xray-dynamic-advantage.jpg	23 x 18 (1.28)	1794 x 936 (1.92)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-dynamic-advantage.jpg	182 x 130 (1.40)	1794 x 936 (1.92)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/edge-proxy-protocol.jpg	23 x 18 (1.28)	1634 x 1000 (1.63)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-proxy-protocol.jpg	182 x 130 (1.40)	1634 x 1000 (1.63)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/nginx-prod-mem-leak.jpg	182 x 130 (1.40)	1450 x 816 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-gslb-what.jpg	182 x 130 (1.40)	1376 x 770 (1.79)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/what-is-openresty-xray.jpg	23 x 18 (1.28)	1370 x 770 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/what-is-openresty-xray.jpg	182 x 130 (1.40)	1370 x 770 (1.78)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/what-is-openresty-edge.jpg	23 x 18 (1.28)	1366 x 770 (1.77)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/what-is-openresty-edge.jpg	182 x 130 (1.40)	1366 x 770 (1.77)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-or-comparison.jpg	182 x 130 (1.40)	518 x 260 (1.99)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/luajit-plus.jpg	182 x 130 (1.40)	487 x 260 (1.87)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-zstd.jpg	182 x 130 (1.40)	486 x 260 (1.87)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-p99.jpg	182 x 130 (1.40)	472 x 260 (1.82)
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`	openresty.org/images/header-images/xray-logo.jpg	23 x 18 (1.28)	462 x 260 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/why-edge-webhook.jpg	182 x 130 (1.40)	462 x 260 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/edge-cdn-benefit.jpg	182 x 130 (1.40)	462 x 260 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-java-mem.jpg	182 x 130 (1.40)	462 x 260 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-rsa-cpu.jpg	182 x 130 (1.40)	462 x 260 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-gzip-cpu.jpg	182 x 130 (1.40)	462 x 260 (1.78)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/xray-keepalive.jpg	182 x 130 (1.40)	459 x 260 (1.77)
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`	openresty.org/images/header-images/why-edge-waf.jpg	182 x 130 (1.40)	458 x 260 (1.76)
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`	openresty.org/images/logo.webp	23 x 18 (1.28)	156 x 145 (1.08)
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`	openresty.org/images/logo.webp	23 x 18 (1.28)	156 x 145 (1.08)

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
heatmap.openresty.com/clickheat/js/clickheat.js	`Failed to load resource: net::ERR_CERT_DATE_INVALID`
ws.zoominfo.com/pixel/63bd97fc4e23807e8ea36b95	`Failed to load resource: the server responded with a status of 404 ()`
openresty.org/en/ line 409, col 0	`Refused to execute script from 'https://ws.zoominfo.com/pixel/63bd97fc4e23807e8ea36b95' because its MIME type ('') is not executable, and strict MIME type checking is enabled.`

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

SEO

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header > p.site-name > a > img `header > p.site-name > a > img`
header > p.right > a > img `header > p.right > a > img`
header > p.right > a > img.dark-img `header > p.right > a > img.dark-img`
header > p.right > a.enterprise-button > img `header > p.right > a.enterprise-button > img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news-item > a > picture > img.news-img `div.news-item > a > picture > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.news > div.news-item > a > img.news-img `div.news > div.news-item > a > img.news-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`
div.swiper-slide > a.article-item > div.blog-img > img.article-img `div.swiper-slide > a.article-item > div.blog-img > img.article-img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●Document has a valid `hreflang`

○robots.txt is valid

○Document has a valid `rel=canonical`

Results for https://openresty.org

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (1)

Trust (2)

Usability (1)

Content (2)

Navigation (3)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Contrast

Names and labels

Best practices

Best Practices

User Experience

General

SEO

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Contrast

Names and labels

Best practices

Best Practices

User Experience

General

SEO

Content Best Practices

Keyboard Shortcuts