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Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

95

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

Performance issues directly impact user engagement and conversion rates.

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.

RequestCache TTLTransfer Size
openresty.org/images/header-images/xray-vulnerability-scanning.jpg3600.0 s3.0 MiB
openresty.org/images/header-images/xray-dynamic-advantage.jpg3600.0 s2.6 MiB
openresty.org/images/header-images/edge-proxy-protocol.jpg3600.0 s2.1 MiB
openresty.org/images/header-images/nginx-prod-mem-leak.jpg3600.0 s1.8 MiB
openresty.org/images/header-images/what-is-openresty-xray.jpg3600.0 s1.5 MiB
openresty.org/images/header-images/what-is-openresty-edge.jpg3600.0 s1.4 MiB
openresty.org/images/header-images/edge-gslb-what.jpg3600.0 s1.1 MiB
openresty.org/images/header-images/edge-zstd.jpg3600.0 s350.9 KiB
openresty.org/images/header-images/xray-gzip-cpu.jpg3600.0 s335.2 KiB
openresty.org/images/header-images/xray-p99.jpg3600.0 s315.9 KiB
openresty.org/images/header-images/xray-keepalive.jpg3600.0 s307.3 KiB
openresty.org/images/header-images/luajit-plus.jpg3600.0 s301.6 KiB
openresty.org/images/header-images/xray-java-mem.jpg3600.0 s278.5 KiB
openresty.org/images/header-images/why-edge-webhook.jpg3600.0 s251.3 KiB
openresty.org/images/header-images/edge-or-comparison.jpg3600.0 s241.9 KiB
openresty.org/images/header-images/why-edge-waf.jpg3600.0 s209.3 KiB
openresty.org/images/media-server.png3600.0 s102.5 KiB
openresty.org/js/jquery.min.js3600.0 s38.3 KiB
openresty.org/images/bg-grid.png3600.0 s29.2 KiB
openresty.org/images/header-images/edge-cdn-benefit.jpg3600.0 s24.9 KiB
openresty.org/js/highlight.pack.js3600.0 s21.7 KiB
openresty.org/images/header-images/xray-rsa-cpu.jpg3600.0 s21.5 KiB
ssl.google-analytics.com/ga.js7200.0 s17.4 KiB
openresty.org/images/logo.png3600.0 s16.1 KiB
openresty.org/images/header-images/xray-logo.jpg3600.0 s7.6 KiB
openresty.org/css/main.css3600.0 s6.1 KiB
openresty.org/images/donate_paypal.gif3600.0 s5.7 KiB
openresty.org/images/logo.webp3600.0 s5.6 KiB
openresty.org/css/jquery.modal.css3600.0 s2.2 KiB
openresty.org/js/jquery.modal.min.js3600.0 s2.1 KiB
openresty.org/images/ico-github.png3600.0 s2.0 KiB
openresty.org/images/ico-search.png3600.0 s1.6 KiB
openresty.org/images/rocket.svg3600.0 s1.2 KiB
openresty.org/images/flarum.png3600.0 s1.2 KiB
openresty.org/js/main.js3600.0 s1001 B
openresty.org/images/search.svg3600.0 s898 B
openresty.org/css/github.css3600.0 s808 B
openresty.org/css/fonts.css3600.0 s756 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.

URLEst Savings
openresty.org/fonts/Open-Sans-italic/Open-Sans-italic.woff2535 ms
openresty.org/fonts/Open-Sans-700italic/Open-Sans-700italic.woff2530 ms
openresty.org/fonts/Open-Sans-300/Open-Sans-300.woff2525 ms
openresty.org/fonts/Open-Sans-700/Open-Sans-700.woff2520 ms
openresty.org/fonts/Open-Sans-regular/Open-Sans-regular.woff2515 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.

URLResource SizeEst 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.jpg3.0 MiB3.0 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.jpg2.6 MiB2.6 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.jpg2.1 MiB2.1 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.jpg1.8 MiB1.8 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.jpg1.5 MiB1.5 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.jpg1.4 MiB1.4 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.jpg1.1 MiB1.1 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.jpg350.6 KiB346.8 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.jpg334.9 KiB331.0 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.jpg315.6 KiB311.7 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.jpg307.0 KiB303.1 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.jpg301.3 KiB297.4 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.jpg278.2 KiB274.4 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.jpg251.0 KiB247.1 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.jpg241.6 KiB237.7 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.jpg209.0 KiB205.2 KiB
OpenResty® is a dynamic web platform based on NGINX and LuaJIT. body > section#intro > div.text
openresty.org/images/media-server.png102.2 KiB89.2 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.jpg24.6 KiB20.8 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.jpg21.2 KiB17.3 KiB
header > p.site-name > a > img header > p.site-name > a > img
openresty.org/images/logo.png15.8 KiB15.2 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.jpg7.3 KiB6.4 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.

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.

URLTransfer Size
openresty.org/css/jquery.modal.css2.2 KiB
openresty.org/css/github.css808 B
openresty.org/css/main.css6.1 KiB
openresty.org/css/fonts.css756 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

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 40 ms 49.8 KiB
URLTransfer SizeEst Savings
openresty.org/js/jquery.min.js38.0 KiB25.4 KiB
static.openresty.com/swiper/5.2.1/js/swiper.min.js41.9 KiB24.4 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.

URLTransfer Size
openresty.org/images/header-images/xray-vulnerability-scanning.jpg3.0 MiB
openresty.org/images/header-images/xray-dynamic-advantage.jpg2.6 MiB
openresty.org/images/header-images/edge-proxy-protocol.jpg2.1 MiB
openresty.org/images/header-images/nginx-prod-mem-leak.jpg1.8 MiB
openresty.org/images/header-images/what-is-openresty-xray.jpg1.5 MiB
openresty.org/images/header-images/what-is-openresty-edge.jpg1.4 MiB
openresty.org/images/header-images/edge-gslb-what.jpg1.1 MiB
openresty.org/images/header-images/edge-zstd.jpg350.9 KiB
openresty.org/images/header-images/xray-gzip-cpu.jpg335.2 KiB
openresty.org/images/header-images/xray-p99.jpg315.9 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
URLTime 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
81

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 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

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

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.
92

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.

URLAspect 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.jpg23 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.jpg182 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.jpg23 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.jpg182 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.jpg23 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.jpg182 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.jpg182 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.jpg182 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.jpg23 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.jpg182 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.jpg23 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.jpg182 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.jpg182 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.jpg182 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.jpg182 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.jpg182 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.jpg23 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.jpg182 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.jpg182 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.jpg182 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.jpg182 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.jpg182 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.jpg182 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.jpg182 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.webp23 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.webp23 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.

SourceDescription
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
82

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`

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