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Audit Complete

Results for https://asme.org

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E-commerce · estimated Tracking: purchases
Netherlands Netherlands · Amsterdam Completed: Apr 22, 2026 20:07 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C70

Site Health

Score: 70 / 100

Based on 8 categories, 0 sections

Room to improve — your 9.1s load time is above Google's 2.5s 'Good' threshold.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Good server performance with room for optimization.

Mostly compliant — a few items need attention.

Good content signals with minor gaps.

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

Cart Functionality · 420 peers
You 70
·
Avg 72
At average
0 50 100
Better than 15% of Cart Functionality sites See full Cart Functionality benchmark →
Adobe Fonts · 188 peers
You 70
·
Avg 73
At average
0 50 100
Better than 6% of Adobe Fonts sites See full Adobe Fonts benchmark →

Top Priorities (5)

1

Content-Security-Policy header is missing

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

Security › Security Headers
2

No Content-Security-Policy header found

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

Security › Content Security Policy
3

Page weighs 9.3 MB (3.9 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
4

1 link(s) with no accessible text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality
5

4 button(s) with no accessible text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

2

High impact, low effort — start here.

Strategic

3

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
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What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 9.1s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

2 security gaps detected — browsers may warn visitors about your site.
Your LCP is 9.1s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.
2 accessibility issues exclude users who rely on assistive technology.

Conversion Barriers

3 critical 7 warning

10 barrier(s) likely increasing bounce by ~33%.

Speed (2)

Page takes 9.1s to load

+12% bounce

Users abandon at ~3s — you're 6.6s over the 2.5s threshold

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

Page feels frozen for 4.8s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

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)

Layout shifts during page load

+3% bounce

Content movement causes mis-clicks on CTAs and form fields

Fix: Add width/height to images; reserve space for late-loading embeds

Content (2)

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, …)

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

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

6 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

$600 investment → $6,583/month returns + USD 157,500 risk avoided

Payback period: < 1 month First-year ROI: +13065%

Investment

$600

6h · 5 findings

Monthly returns

$6,583 /mo

~$78,991 / year

  • Conversions recovered $6,582
  • Bandwidth savings $0.99

Regulatory risk avoided

USD 157,500

if kept compliant

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

Payback period

0 12mo 24mo

$100 — 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

$600

6.0 developer hours at $100/hr

Based on United States rates ($100/hr)

Quick wins
$100 2 fixes in ~60 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

$13,126 / month at risk

~$157,512 / 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
  • 2 advertising/retargeting trackers detected
    CCPA/CPRA: USD 2,500 – USD 7,500
  • Trackers detected but no cookie policy found
    CCPA/CPRA: USD 2,500 – USD 7,500

+7 more

Bandwidth Waste

$0.99 /mo

12405.1 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~1.2 MB per page load
    Saves $0.99/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

Unique monthly visitors from your analytics

Purchases, signups, or key actions

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.

25
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
69
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

3.76 s

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

9.06 s

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

4.79 s

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

0.140

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

8.35 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.

25.41 s

Detailed Report

Audit breakdown by category with detailed findings.

25

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.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.14028600000000002] map[node:map[boundingRect:map[bottom:565 height:220 left:-828 right:2069 top:345 width:2897] lhId:page-6-DIV nodeLabel:The 2026 Hermann Rosen Award: Applications Open! On The Move: Driving The Futu… path:1,HTML,1,BODY,19,DIV,0,MAIN,1,SECTION,1,DIV,0,DIV,0,DIV,0,DIV selector:div#ASME_Slider_Control > div.slider-inner-wrapper > div#ASME_Slides > div.asme-slider-track snippet:<div class="asme-slider-track" style="touch-action: none; user-select: none; -webkit-user-drag: none;"> type:node] score:0.134419] map[node:map[boundingRect:map[bottom:565 height:220 left:-828 right:2069 top:345 width:2897] lhId:page-6-DIV nodeLabel:The 2026 Hermann Rosen Award: Applications Open! On The Move: Driving The Futu… path:1,HTML,1,BODY,19,DIV,0,MAIN,1,SECTION,1,DIV,0,DIV,0,DIV,0,DIV selector:div#ASME_Slider_Control > div.slider-inner-wrapper > div#ASME_Slides > div.asme-slider-track snippet:<div class="asme-slider-track" style="touch-action: none; user-select: none; -webkit-user-drag: none;"> type:node] score:0.003015] map[score:0.002852]]

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.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:0.631 source:map[column:86058 line:22 type:source-location url:https://js.hs-analytics.net/analytics/1776888300000/5268583.js urlProvider:network]]]

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.row > div.col-lg-5 > a.featured-resource > img.d-xs-block div.row > div.col-lg-5 > a.featured-resource > img.d-xs-block
/getmedia/234300cd-b21b-4b27-a7eb-5f6ffca677e8/854x480_fe...149.5 KiB108.0 KiB
div.container > div.row > div.col-12 > img div.container > div.row > div.col-12 > img
/getmedia/6ad4a6da-6684-4d2f-bcf0-77471809aa1b/sections-d...116.9 KiB70.7 KiB
div.container > div.row > div.col-md-6 > div.offerings-image div.container > div.row > div.col-md-6 > div.offerings-image
www.asme.org/getmedia/155b8814-fcbb-44f9-89c3-380169d41508/courses-1123.webp94.1 KiB65.8 KiB
div.row > div.col-md-7 > div.membership-image > img.d-sm-none div.row > div.col-md-7 > div.membership-image > img.d-sm-none
/getmedia/729b4f86-4e18-40a7-8cd3-824d2bac8511/becoing-an...70.0 KiB26.4 KiB
div.col-md-6 > a > div.event-card > img.d-xs-block div.col-md-6 > a > div.event-card > img.d-xs-block
www.asme.org/assets/images/event-images/asme-pattern-typeconferences.jpg28.2 KiB15.4 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-5-DIV
nodeLabel: Setting the Standard The American Society of Mechanical Engineers
path: 1,HTML,1,BODY,19,DIV,0,MAIN,1,SECTION,0,DIV
selector: div#contentBody > main#home > section.hero > div#bg_hero_main
snippet: <div class="hero-left" id="bg_hero_main">

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
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

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.

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
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/signals/config/1062168734659293?v=2.9.303&r=stable&domai...1200.0 s46.6 KiB
js.hs-analytics.net/analytics/1776888300000/5268583.js300.0 s42.3 KiB
cdn.monsido.com/page-assist/v2/mon-page-assist-loader.js300.0 s33.9 KiB
cdn.mouseflow.com/projects/09b61027-79f6-45b0-a0eb-46666bbdb229.js86400.0 s74.7 KiB
js.hubspot.com/web-interactives-embed.js600.0 s28.5 KiB
js.hs-banner.com/v2/5268583/banner.js300.0 s23.7 KiB
www.asme.org/dist/vendor.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s222.0 KiB
tags.clickagy.com/data.js?rnd=62fe5c0e6ad960.0 ms14.0 KiB
js.adsrvr.org/up_loader.1.1.0.js0.0 ms12.3 KiB
ws-assets.zoominfo.com/formcomplete.js3600.0 s14.4 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
www.asme.org/dist/css/main.min.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s94.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
cdn.mouseflow.com/projects/7aa6ff39-8ab3-4ad7-bdc4-c8bb9ea4fc3b.js86400.0 s18.3 KiB
www.asme.org/dist/js/vendor.min.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s65.6 KiB
js.zi-scripts.com/zi-tag.js0.0 ms5.7 KiB
/dist/asme-gahandlers-browser.js?v=9ccdc2b4-171f-474f-8ec...604800.0 s40.8 KiB
www.asme.org/dist/js/scripts.min.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s39.0 KiB
js.hsadspixel.net/pixels.js600.0 s3.9 KiB
app-script.monsido.com/v2/monsido-script.js300.0 s3.7 KiB
www.asme.org/assets/images/event-images/asme-pattern-typewebinars.jpg604800.0 s32.8 KiB
up.pixel.ad/assets/up.js?um=10.0 ms3.1 KiB
www.asme.org/dist/js/jquery.min.js604800.0 s30.2 KiB
www.asme.org/assets/images/event-images/asme-pattern-typeconferences.jpg604800.0 s28.5 KiB
s.adroll.com/i/favicon/nextroll-32x32.png0.0 ms2.3 KiB
www.asme.org/dist/nav-footer.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s20.1 KiB
www.asme.org/dist/nav-footer.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s17.7 KiB
www.asme.org/dist/common.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s16.8 KiB
cdn.monsido.com/page-assist/v2/assets/img/uaccess.svg3600.0 s1.7 KiB
cdn.monsido.com/page-assist/v2/assets/img/default-spinner.png3600.0 s1.4 KiB
js.hs-scripts.com/5268583.js90.0 s1.1 KiB
js.adsrvr.org/universal_pixel.js0.0 ms958 B
s.adroll.com/j/pre/index.js0.0 ms756 B
www.asme.org/assets/images/asme-logo-white.svg604800.0 s7.1 KiB
/collect?v=2&fmt=js&pid=1042129&time=1776888379760&url=ht...0.0 ms693 B
/consent/check/KQSNZBVBLJAM3BX2CPEMML?pv=38669318266.7132...0.0 ms640 B
/wwwasmeorg/media/media-library/pages/product overview/pu...604800.0 s5.7 KiB
/collect?v=2&fmt=js&pid=1042129&time=1776888380912&conver...0.0 ms569 B
www.asme.org/assets/icons/icon-slick-play.png604800.0 s2.1 KiB
/wwwasmeorg/media/media-library/pages/product overview/pu...604800.0 s2.0 KiB
www.asme.org/dist/common.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s2.0 KiB
/wwwasmeorg/media/media-library/pages/product overview/pu...604800.0 s1.7 KiB
www.asme.org/assets/icons/icon-arrow-link-white.svg604800.0 s1.6 KiB
www.asme.org/dist/runtime.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s1.3 KiB
www.asme.org/assets/icons/icon-search-blue.svg604800.0 s1.0 KiB
www.asme.org/assets/icons/icon-check-white.svg604800.0 s716 B
www.asme.org/assets/icons/icon-arrow-link-black.svg604800.0 s683 B
www.asme.org/assets/icons/icon-slick-prev.png604800.0 s529 B
www.asme.org/assets/icons/icon-slick-next.png604800.0 s526 B
www.asme.org/assets/icons/icon-slick-pause.png604800.0 s389 B
/tr/?id=1062168734659293&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms19 B
/p.css?s=1&k=uob4hmd&ht=tk&f=137.139.169.171.173.175.5474...604800.0 s172 B

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.

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: 1.0 s
URLTime Spent
asme.org/1.0 s
www.asme.org/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
The 2026 Hermann Rosen Award: Applications Open! On The Move: Driving The Futu… div#ASME_Slider_Control > div.slider-inner-wrapper > div#ASME_Slides > div.asme-slider-track
0.134
The 2026 Hermann Rosen Award: Applications Open! On The Move: Driving The Futu… div#ASME_Slider_Control > div.slider-inner-wrapper > div#ASME_Slides > div.asme-slider-track
0.003
0.003

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
Unattributable1.6 s395 ms0.0 ms
www.asme.org/1.6 s255 ms54 ms
www.googletagmanager.com/gtm.js?id=GTM-P5LRDPG1.3 s1.0 s160 ms
js.hs-analytics.net/analytics/1776888300000/5268583.js951 ms668 ms22 ms
www.asme.org/dist/js/scripts.min.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3845 ms685 ms29 ms
www.googletagmanager.com/gtag/destination?id=AW-1071119085&cx=c&gtm=4e64k0628 ms378 ms76 ms
www.googletagmanager.com/gtag/js?id=G-3DH4W3W6HS&cx=c&gtm=4e64k0595 ms497 ms86 ms
s.adroll.com/j/consent_tcfv2.js531 ms336 ms71 ms
www.asme.org/dist/common.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3409 ms381 ms14 ms
scripts.clarity.ms/0.8.59/clarity.js355 ms308 ms17 ms
www.googletagmanager.com/gtag/destination?id=DC-9197313&cx=c&gtm=4e64k0339 ms268 ms67 ms
cdn.monsido.com/page-assist/v2/mon-page-assist-loader.js334 ms209 ms27 ms
www.googletagmanager.com/gtag/destination?id=AW-11434129002&cx=c&gtm=4e64k0322 ms255 ms63 ms
www.googletagmanager.com/gtag/destination?id=DC-12463249&cx=c&gtm=4e64k0312 ms245 ms63 ms
blob:https://www.asme.org/1912f191-a72a-4fd1-9196-7da2f1da51e7258 ms224 ms1.4 ms
www.asme.org/dist/vendor.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3255 ms114 ms114 ms
/signals/config/1062168734659293?v=2.9.303&r=stable&domai...233 ms197 ms31 ms
connect.facebook.net/en_US/fbevents.js230 ms171 ms56 ms
snap.licdn.com/li.lms-analytics/insight.min.js135 ms93 ms29 ms
www.asme.org/dist/js/jquery.min.js114 ms91 ms15 ms
s.adroll.com/j/roundtrip.js95 ms74 ms14 ms
js.hubspot.com/web-interactives-embed.js95 ms71 ms19 ms
www.asme.org/dist/js/vendor.min.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f386 ms37 ms48 ms
www.asme.org/dist/css/main.min.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f369 ms0.0 ms0.0 ms
cdn.mouseflow.com/projects/09b61027-79f6-45b0-a0eb-46666bbdb229.js69 ms3.7 ms64 ms
js.hs-banner.com/v2/5268583/banner.js59 ms42 ms11 ms
up.pixel.ad/assets/up.js?um=159 ms55 ms1.5 ms
cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.min.js50 ms30 ms18 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation7.5 s
Other2.0 s
Script Parsing & Compilation1.2 s
Style & Layout1.0 s
Rendering220 ms
Parse HTML & CSS213 ms
Garbage Collection207 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 27.8 KiB
URLTransfer SizeEst Savings
cdn.mouseflow.com/projects/09b61027-79f6-45b0-a0eb-46666bbdb229.js74.1 KiB27.8 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
div.col-md-6 > a > div.event-card > img.d-xs-block div.col-md-6 > a > div.event-card > img.d-xs-block
www.asme.org/assets/images/event-images/asme-pattern-typeconferences.jpg
div.row > div.col-lg-5 > a.featured-resource > img.d-xs-block div.row > div.col-lg-5 > a.featured-resource > img.d-xs-block
/getmedia/234300cd-b21b-4b27-a7eb-5f6ffca677e8/854x480_fe...
div.container > div.row > div.col-12 > img div.container > div.row > div.col-12 > img
/getmedia/6ad4a6da-6684-4d2f-bcf0-77471809aa1b/sections-d...
div.row > div.col-md-7 > div.membership-image > img.d-sm-none div.row > div.col-md-7 > div.membership-image > img.d-sm-none
/getmedia/729b4f86-4e18-40a7-8cd3-824d2bac8511/becoing-an...
div.row > div.col-md-6 > div.offerings-image > img.d-md-none div.row > div.col-md-6 > div.offerings-image > img.d-md-none
www.asme.org/getmedia/155b8814-fcbb-44f9-89c3-380169d41508/courses-1123.webp
div.row > div.col-md-6 > div.offerings-image > img.d-md-none div.row > div.col-md-6 > div.offerings-image > img.d-md-none
/getmedia/d27f69fe-d0c5-4f7c-8d6d-7730a8bdf2d4/publicatio...
PageAssist Personalization Options span.mon-logo-image-wrapper-content > span.mon-logo-image-wrapper > span.mon-logo-image-bg > img.mon-logo-image
cdn.monsido.com/page-assist/v2/assets/img/uaccess.svg
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/c5afa62a-0635-4ac2-8480-a3e089a7f01e/membership...
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/3946c3dc-8bce-4355-9e6e-405d6fa4da3e/membership...
div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo
s.adroll.com/i/favicon/nextroll-32x32.png
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/9f95c5fb-4e61-41e6-b025-a4ce6e63dd90/membership...
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/a54e30e0-5205-47e7-bd75-76cc9df83305/membership...

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

Optimize DOM size
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 7 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 1,980 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 180 ms
INP breakdown
Avoid non-composited animations
86

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.

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
Standards div.container > div.row > div.col-lg-3 > h2
About ASME div.container > div.row > div.popular-tags > a.btn
Business and Career Support div.container > div.row > div.popular-tags > a.btn
Conferences and Events div.container > div.row > div.popular-tags > a.btn
Engineering div.container > div.row > div.popular-tags > a.btn
Membership div.container > div.row > div.popular-tags > a.btn
Standards Development div.container > div.row > div.popular-tags > a.btn
ASME Information div.container > div.row > div.popular-tags > a.btn
Publications div.container > div.row > div.popular-tags > a.btn
Events main#home > section.events > div.container > h2

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Process Piping div.col-lg-9 > div.standard-cards > a.card-highlight > h5
Locate ASME Certified Companies div.col-lg-4 > a.certificationCard > div.contentContainer > h5
Seek and Use Feedback for Successful Engineering Career div.col-lg-5 > a.featured-resource > div.featured-resource-item > h5
Verification, Validation, and Uncertainty Quantification Symposium 2026 - VVUQ … a > div.event-card > div.event-info > h5
Quick Job Search div.container > div.row > div.col-md-3 > h4

These are opportunities to improve keyboard navigation in your application.

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Menu div#react_0HNKVAV24I82S > div.index-module__siteheader--AsLaV > div.index-module__navbar--nGYMQ > li.NavMenuButton-module__nav-button--luGwB

These are opportunities to improve the experience of reading tabular or list data using 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
Show Slide 0 div#pagination-dots > ul.asme-dots > li#asme_dot_0 > button#asme_dot_button_0
Show Slide 1 div#pagination-dots > ul.asme-dots > li#asme_dot_1 > button#asme_dot_button_1
Show Slide 2 div#pagination-dots > ul.asme-dots > li#asme_dot_2 > button#asme_dot_button_2
Show Slide 3 div#pagination-dots > ul.asme-dots > li#asme_dot_3 > button#asme_dot_button_3
Show Slide 4 div#pagination-dots > ul.asme-dots > li#asme_dot_4 > button#asme_dot_button_4
Show Slide 5 div#pagination-dots > ul.asme-dots > li#asme_dot_5 > button#asme_dot_button_5
Show Slide 6 div#pagination-dots > ul.asme-dots > li#asme_dot_6 > button#asme_dot_button_6
Professional div.d-flex > div.division-description > p.title > a
Student div.d-flex > div.division-description > p.title > a
Technical div.d-flex > div.division-description > p.title > a

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>`
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
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.
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.
Links have a discernible name
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
No element has a `[tabindex]` value greater than 0
Document has a main landmark.
ARIA IDs are unique
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Deprecated ARIA roles were not used
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
`[role]`s have all required `[aria-*]` attributes
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
`[role]` values are valid
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
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
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.
`<input type="image">` elements have `[alt]` 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.
69

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)
Student div.d-flex > div.division-thumb > a > img.img-circle
/getmedia/617fed3b-c428-4acc-887e-e564b7033d2f/StudentThu...80 x 80 (1.00)80 x 69 (1.16)
Technical div.d-flex > div.division-thumb > a > img.img-circle
/getmedia/eaef9012-a82f-49e2-874b-dd8facf57ca4/TechnicalT...80 x 80 (1.00)80 x 69 (1.16)
Professional div.d-flex > div.division-thumb > a > img.img-circle
/getmedia/37b1a578-4309-4318-b848-0e0406519e64/Profession...80 x 80 (1.00)79 x 68 (1.16)

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo
s.adroll.com/i/favicon/nextroll-32x32.png22 x 2232 x 3233 x 33

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting
Unload event listeners are deprecated and will be removed.

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
Failed to load resource: the server responded with a status of 404 ()

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uses HTTPS
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
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
Redirects HTTP traffic to HTTPS
85

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

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Search div.NavTop-module__navbar-top--tg4lt > ul > li#searchToggleButton > a
div.row > div.hero-content > div.search-box > a.btn div.row > div.hero-content > div.search-box > a.btn
Continue Browsing div.lity-custom-block > div.modal-container > div.buttons > a.btn
SETTINGS div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_settings > a#adroll_consent_settings
20 advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
DECLINE ALL div#adroll_consent_banner_container > div#adroll_consent_banner > div.adroll_consent_button_bar > a#adroll_consent_reject
ALLOW ALL div#adroll_consent_banner_container > div#adroll_consent_banner > div.adroll_consent_button_bar > a#adroll_consent_accept
Manage consent preferences body.monsido-toolbar-body-container > div#adroll_consent_container > div#nextroll_consent_persistent_icon > a#adroll_consent_persistent_icon_href

To appear in search results, crawlers need access to your app.

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

56
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

1.21 s

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

2.50 s

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

494 ms

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

0.016

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

2.80 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.

5.65 s

Detailed Report

Audit breakdown by category with detailed findings.

56

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.

RequestCache TTLTransfer Size
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/signals/config/1062168734659293?v=2.9.303&r=stable&domai...1200.0 s46.6 KiB
js.hs-analytics.net/analytics/1776888300000/5268583.js300.0 s42.3 KiB
cdn.monsido.com/page-assist/v2/mon-page-assist-loader.js300.0 s33.9 KiB
cdn.mouseflow.com/projects/09b61027-79f6-45b0-a0eb-46666bbdb229.js86400.0 s74.7 KiB
js.hubspot.com/web-interactives-embed.js600.0 s28.5 KiB
js.hs-banner.com/v2/5268583/banner.js300.0 s23.7 KiB
www.asme.org/dist/vendor.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s222.0 KiB
tags.clickagy.com/data.js?rnd=62fe5c0e6ad960.0 ms13.6 KiB
js.adsrvr.org/up_loader.1.1.0.js0.0 ms12.3 KiB
ws-assets.zoominfo.com/formcomplete.js3600.0 s14.4 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
www.asme.org/dist/css/main.min.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s94.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
cdn.mouseflow.com/projects/7aa6ff39-8ab3-4ad7-bdc4-c8bb9ea4fc3b.js86400.0 s18.3 KiB
www.asme.org/dist/js/vendor.min.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s65.6 KiB
js.zi-scripts.com/zi-tag.js0.0 ms5.7 KiB
/dist/asme-gahandlers-browser.js?v=9ccdc2b4-171f-474f-8ec...604800.0 s40.8 KiB
www.asme.org/dist/js/scripts.min.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s39.0 KiB
js.hsadspixel.net/pixels.js600.0 s3.9 KiB
app-script.monsido.com/v2/monsido-script.js300.0 s3.7 KiB
www.asme.org/assets/images/event-images/asme-pattern-typewebinars.jpg604800.0 s32.8 KiB
up.pixel.ad/assets/up.js?um=10.0 ms3.1 KiB
www.asme.org/dist/js/jquery.min.js604800.0 s30.2 KiB
www.asme.org/assets/images/event-images/asme-pattern-typeconferences.jpg604800.0 s28.5 KiB
s.adroll.com/i/favicon/nextroll-32x32.png0.0 ms2.3 KiB
www.asme.org/dist/nav-footer.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s20.1 KiB
www.asme.org/dist/nav-footer.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s17.7 KiB
www.asme.org/dist/common.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s16.8 KiB
cdn.monsido.com/page-assist/v2/assets/img/uaccess.svg3600.0 s1.8 KiB
cdn.monsido.com/page-assist/v2/assets/img/default-spinner.png3600.0 s1.4 KiB
js.hs-scripts.com/5268583.js90.0 s1.1 KiB
js.adsrvr.org/universal_pixel.js0.0 ms958 B
/collect?v=2&fmt=js&pid=1042129&time=1776888411100&url=ht...0.0 ms909 B
s.adroll.com/j/pre/index.js0.0 ms756 B
www.asme.org/assets/images/asme-logo-white.svg604800.0 s7.1 KiB
/consent/check/KQSNZBVBLJAM3BX2CPEMML?pv=23659597014.6468...0.0 ms640 B
/wwwasmeorg/media/media-library/pages/product overview/pu...604800.0 s5.7 KiB
/collect?v=2&fmt=js&pid=1042129&time=1776888412520&conver...0.0 ms570 B
www.asme.org/assets/icons/icon-slick-play.png604800.0 s2.1 KiB
/wwwasmeorg/media/media-library/pages/product overview/pu...604800.0 s2.0 KiB
www.asme.org/dist/common.css?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s2.0 KiB
/wwwasmeorg/media/media-library/pages/product overview/pu...604800.0 s1.7 KiB
www.asme.org/assets/icons/icon-arrow-link-white.svg604800.0 s1.6 KiB
www.asme.org/dist/runtime.js?v=9ccdc2b4-171f-474f-8ecb-33171f6815f3604800.0 s1.3 KiB
www.asme.org/assets/icons/icon-search-blue.svg604800.0 s1.0 KiB
www.asme.org/assets/icons/icon-check-white.svg604800.0 s716 B
www.asme.org/assets/icons/icon-arrow-link-black.svg604800.0 s683 B
www.asme.org/assets/icons/icon-slick-prev.png604800.0 s529 B
www.asme.org/assets/icons/icon-slick-next.png604800.0 s526 B
www.asme.org/assets/icons/icon-slick-pause.png604800.0 s389 B
/p.css?s=1&k=uob4hmd&ht=tk&f=137.139.169.171.173.175.5474...604800.0 s172 B
/tr/?id=1062168734659293&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms16 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.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:80.352 source:map[type:text value:[unattributed]]] map[reflowTime:1.117 source:map[column:86058 line:22 type:source-location url:https://js.hs-analytics.net/analytics/1776888300000/5268583.js urlProvider:network]]]

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.container > div.row > div.col-12 > img div.container > div.row > div.col-12 > img
/getmedia/6ad4a6da-6684-4d2f-bcf0-77471809aa1b/sections-d...116.9 KiB71.6 KiB
div.container > div.row > div.col-md-6 > div.offerings-image div.container > div.row > div.col-md-6 > div.offerings-image
www.asme.org/getmedia/155b8814-fcbb-44f9-89c3-380169d41508/courses-1123.webp94.1 KiB65.8 KiB
div.container > div.row > div.col-md-7 > div.membership-image div.container > div.row > div.col-md-7 > div.membership-image
/getmedia/729b4f86-4e18-40a7-8cd3-824d2bac8511/becoing-an...70.0 KiB26.4 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-3-DIV
nodeLabel: Setting the Standard The American Society of Mechanical Engineers
path: 1,HTML,1,BODY,19,DIV,0,MAIN,1,SECTION,0,DIV
selector: div#contentBody > main#home > section.hero > div#bg_hero_main
snippet: <div class="hero-left" id="bg_hero_main">

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
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

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.

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.

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

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: 454 ms
URLTime Spent
asme.org/454 ms
www.asme.org/0.0 ms

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

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation2.0 s
Other900 ms
Style & Layout403 ms
Script Parsing & Compilation326 ms
Rendering219 ms
Parse HTML & CSS76 ms
Garbage Collection56 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 27.8 KiB
URLTransfer SizeEst Savings
cdn.mouseflow.com/projects/09b61027-79f6-45b0-a0eb-46666bbdb229.js74.1 KiB27.8 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
div.container > div.row > div.col-12 > img div.container > div.row > div.col-12 > img
/getmedia/6ad4a6da-6684-4d2f-bcf0-77471809aa1b/sections-d...
PageAssist Personalization Options span.mon-logo-image-wrapper-content > span.mon-logo-image-wrapper > span.mon-logo-image-bg > img.mon-logo-image
cdn.monsido.com/page-assist/v2/assets/img/uaccess.svg
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/c5afa62a-0635-4ac2-8480-a3e089a7f01e/membership...
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/3946c3dc-8bce-4355-9e6e-405d6fa4da3e/membership...
div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo
s.adroll.com/i/favicon/nextroll-32x32.png
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/9f95c5fb-4e61-41e6-b025-a4ce6e63dd90/membership...
div.row > div.col-6 > div.membership-icon-container > img.icon div.row > div.col-6 > div.membership-icon-container > img.icon
/getmedia/a54e30e0-5205-47e7-bd75-76cc9df83305/membership...

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

Layout shift culprits
Optimize DOM size
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 7 user timings
Avoid long main-thread tasks 16 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 1,700 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 170 ms
Avoid large layout shifts 2 layout shifts found
INP breakdown
90

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.

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
Standards div.container > div.row > div.col-lg-3 > h2
About ASME div.container > div.row > div.popular-tags > a.btn
Business and Career Support div.container > div.row > div.popular-tags > a.btn
Conferences and Events div.container > div.row > div.popular-tags > a.btn
Engineering div.container > div.row > div.popular-tags > a.btn
Membership div.container > div.row > div.popular-tags > a.btn
Standards Development div.container > div.row > div.popular-tags > a.btn
ASME Information div.container > div.row > div.popular-tags > a.btn
Publications div.container > div.row > div.popular-tags > a.btn
Events main#home > section.events > div.container > h2

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Process Piping div.col-lg-9 > div.standard-cards > a.card-highlight > h5
Locate ASME Certified Companies div.col-lg-4 > a.certificationCard > div.contentContainer > h5
Seek and Use Feedback for Successful Engineering Career div.col-lg-5 > a.featured-resource > div.featured-resource-item > h5
Verification, Validation, and Uncertainty Quantification Symposium 2026 - VVUQ … a > div.event-card > div.event-info > h5
Quick Job Search div.container > div.row > div.col-md-3 > h4

These are opportunities to improve keyboard navigation in your application.

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
Previous slide div#pagination > div.pagination-inner > div#pagination-prev > button
Show Slide 0 div#pagination-dots > ul.asme-dots > li#asme_dot_0 > button#asme_dot_button_0
Show Slide 1 div#pagination-dots > ul.asme-dots > li#asme_dot_1 > button#asme_dot_button_1
Show Slide 2 div#pagination-dots > ul.asme-dots > li#asme_dot_2 > button#asme_dot_button_2
Show Slide 3 div#pagination-dots > ul.asme-dots > li#asme_dot_3 > button#asme_dot_button_3
Show Slide 4 div#pagination-dots > ul.asme-dots > li#asme_dot_4 > button#asme_dot_button_4
Show Slide 5 div#pagination-dots > ul.asme-dots > li#asme_dot_5 > button#asme_dot_button_5
Show Slide 6 div#pagination-dots > ul.asme-dots > li#asme_dot_6 > button#asme_dot_button_6
Next slide div#pagination > div.pagination-inner > div#pagination-next > button
Pause slider div#pagination > div.pagination-inner > div#pagination-pause > button
Professional div.d-flex > div.division-description > p.title > a
Student div.d-flex > div.division-description > p.title > a
Technical div.d-flex > div.division-description > p.title > a

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>`
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
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.
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.
Links have a discernible name
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
Document has a main landmark.
ARIA IDs are unique
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Deprecated ARIA roles were not used
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
`[role]`s have all required `[aria-*]` attributes
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
`[role]` values are valid
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
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
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.
`<input type="image">` elements have `[alt]` 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.
73

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)
Student div.d-flex > div.division-thumb > a > img.img-circle
/getmedia/617fed3b-c428-4acc-887e-e564b7033d2f/StudentThu...80 x 80 (1.00)80 x 69 (1.16)
Technical div.d-flex > div.division-thumb > a > img.img-circle
/getmedia/eaef9012-a82f-49e2-874b-dd8facf57ca4/TechnicalT...80 x 80 (1.00)80 x 69 (1.16)
Professional div.d-flex > div.division-thumb > a > img.img-circle
/getmedia/37b1a578-4309-4318-b848-0e0406519e64/Profession...80 x 80 (1.00)79 x 68 (1.16)
Previous slide div.pagination-inner > div#pagination-prev > button > img
www.asme.org/assets/icons/icon-slick-prev.png13 x 11 (1.18)16 x 11 (1.45)
Next slide div.pagination-inner > div#pagination-next > button > img
www.asme.org/assets/icons/icon-slick-next.png13 x 11 (1.18)16 x 11 (1.45)

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting
Unload event listeners are deprecated and will be removed.

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
Failed to load resource: the server responded with a status of 404 ()

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uses HTTPS
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
Redirects HTTP traffic to HTTPS
85

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

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div.NavTop-module__navbar-top--tg4lt > ul > li#searchToggleButton > a div.NavTop-module__navbar-top--tg4lt > ul > li#searchToggleButton > a
div.row > div.hero-content > div.search-box > a.btn div.row > div.hero-content > div.search-box > a.btn
Continue Browsing div.lity-custom-block > div.modal-container > div.buttons > a.btn
SETTINGS div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_settings > a#adroll_consent_settings
20 advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
DECLINE ALL div#adroll_consent_banner_container > div#adroll_consent_banner > div.adroll_consent_button_bar > a#adroll_consent_reject
ALLOW ALL div#adroll_consent_banner_container > div#adroll_consent_banner > div.adroll_consent_button_bar > a#adroll_consent_accept
Manage consent preferences body.monsido-toolbar-body-container > div#adroll_consent_container > div#nextroll_consent_persistent_icon > a#adroll_consent_persistent_icon_href

To appear in search results, crawlers need access to your app.

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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