Singapore · Singapore Completed: Apr 22, 2026 23:02 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 74 / 100
Based on 8 categories, 0 sections
Decent speed, but optimizing further could improve engagement.
Good foundation, but a few gaps could be exploited.
Several issues make your site difficult for assistive technology users.
Missing signals may be hurting your search visibility.
Solid infrastructure — fast server responses across the board.
Mostly compliant — a few items need attention.
Missing metadata means poor previews on social media and search.
Reasonable footprint with room for optimization.
The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.
Weights reflect general web best practices. Individual needs may differ.
Content-Security-Policy header is missing
Security gaps expose your site and users to attacks, eroding trust.
No Content-Security-Policy header found
Security gaps expose your site and users to attacks, eroding trust.
is missing width/height — may cause layout shift
Performance issues directly impact user engagement and conversion rates.
102 third-party resources (72% of weight)
Performance issues directly impact user engagement and conversion rates.
135 HTTP requests — consider bundling or reducing
Performance issues directly impact user engagement and conversion rates.
High impact, low effort — start here.
High impact, requires investment.
Small gains, minimal effort.
Nothing in this quadrant — good news.
Low impact, high effort — do last.
Nothing in this quadrant — good news.
[](https://beavercheck.com/results/fc0559f5-fbd0-4251-a38a-cf9dfd1c98bb)<a href="https://beavercheck.com/results/fc0559f5-fbd0-4251-a38a-cf9dfd1c98bb"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fascopubs.org" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fascopubs.orgThis badge auto-updates with your latest scan result.
Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 10.4s exceeds Google's 2.5s 'Good' threshold and the 3 performance issues below directly contribute to it. Addressing the critical issues below would have the most immediate impact on your user trust.
9 barrier(s) likely increasing bounce by ~31%.
Page takes 10.4s to load
+12% bounceUsers abandon at ~3s — you're 7.9s over the 2.5s threshold
Fix: Optimize render-blocking resources, preload the hero image, and compress images
Page feels frozen for 8.7s
+5% bounceClicks on the primary CTA are ignored while JavaScript runs
Fix: Break up long tasks; defer non-critical JavaScript to post-hydration
No HSTS header
+1% bounceReturning 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% bounceHigher XSS blast radius — one compromised script can exfiltrate the checkout form
Fix: Ship a reporting-only CSP first, then enforce once violations are clean
No Open Graph tags
+2% bounceLinks shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop
Fix: Add og:title, og:description, og:image, og:url to the page head
No structured data
+2% bounceNo 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, …)
Thin content
+3% bounceUnder 300 words — visitors bounce looking for substance, search engines rank competitors first
Fix: Add a substantive FAQ, product detail, or case-study section
Content is hard to read
+2% bounceGraduate-level reading difficulty — limits the addressable audience for product or blog pages
Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60
No skip-to-content link
+1% bounceKeyboard 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
Preliminary CRO audit — each barrier links to the tab with detailed analysis.
$700 investment → $3,492/month returns + USD 150,000 risk avoided
$700
7h · 5 findings
$3,492 /mo
~$41,909 / year
USD 150,000
if kept compliant
$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.
7.0 developer hours at $100/hr
Based on United States rates ($100/hr)
Start here for the best return on investment
$12,501 / month at risk
~$150,007 / year if left unfixed
$150,000
$0.58 /mo
7194.7 MB/mo × 0.080 USD/GB
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.
Unique monthly visitors from your analytics
Purchases, signups, or key actions
Optional — for revenue estimation
more engaged visitors from reduced bounce
Fix 2 critical issues to capture this value
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
Your data stays in your browser — nothing is sent to our servers
Thanks for your feedback!
We'll use a cached audit if available, or offer to scan.
Industry-standard audits powered by Google Lighthouse.
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.
4.18 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.40 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
8.75 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.072
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.77 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.
26.90 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
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.
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.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| n011.ascopubs.org/script.js | 44.3 KiB | 1.1 s |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Est Savings |
|---|---|
| /products/asco/releasedAssets/fonts/icomoon-df597e8917fff... | 15 ms |
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad | tpc.googlesyndication.com/simgad/17927109517865111666 | 20.6 KiB | 18.0 KiB |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| ascopubs.org/ | 779 ms |
| /oauth2/aus1goap5nQ33vo7A297/v1/authorize/?client_id=0oa1... | 1.4 s |
| /action/ssoReturn?state=https%3A%2F%2Fascopubs.org%2F&err... | 479 ms |
| ascopubs.org/ | 0.0 ms |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| ascopubs.org/products/asco/releasedAssets/css/build-c5bca0314db0321e1dcb.css | 137.6 KiB | 131.7 KiB |
| 22.0 KiB | 19.6 KiB |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
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.
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
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 15.4 s |
| Other | 1.2 s |
| Script Parsing & Compilation | 887 ms |
| Style & Layout | 566 ms |
| Parse HTML & CSS | 207 ms |
| Rendering | 152 ms |
| Garbage Collection | 148 ms |
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
ASCO Publications div.header-middle-content > div.navbar-brand__wrapper > a.navbar-brand > img | ascopubs.org/pb-assets/images/global/header/logo-white-1679404672980.svg |
American Society of Clinical Oncology (ASCO) div.col-md-2 > h1 > a > img.img-fluid | /pb-assets/images/global/header/logo-publisher-white-1679... |
American Society of Clinical Oncology (ASCO) div.row > div.col-12 > a.footer__logo-wrapper > img.footer__logo | /pb-assets/images/global/header/logo-publisher-white-1679... |
April 20, 2026 Volume 44 Issue 12 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
April 2026 Volume 22 Issue 4 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 12 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 2 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 10 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 3 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
American Society of Clinical Oncology div.col-12 > div.footer__copyright > p.m-0 > a |
Terms of Use div.col-12 > ul.list-inline > li.list-inline-item > a |
These items highlight common accessibility best practices.
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/. | line 66, col 6 |
| SharedStorage | |
| StorageType.persistent is deprecated. Please use standardized navigator.storage instead. | |
| Fledge |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Failed to load resource: the server responded with a status of 403 () | |
Failed to load resource: the server responded with a status of 404 () | |
ascopubs.org/ line 554, col 0 | Refused to execute script from 'https://ascopubs.org/wro/7a5cea6f64ffe7fb34ea6cda5e74732552d27310~thiss-ds.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled. |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.
Performance issues directly impact user engagement and conversion rates.
Descriptive link text helps search engines understand your content. Learn how to make links more accessible.
Performance issues directly impact user engagement and conversion rates.
| Link destination | Link Text |
|---|---|
| ascopubs.org/authors | LEARN MORE |
Format your HTML in a way that enables crawlers to better understand your app’s content.
Industry-standard audits powered by Google Lighthouse. — Desktop
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.
1.49 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.54 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.32 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.011
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.95 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.
6.09 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
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.
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.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| n011.ascopubs.org/script.js | 44.3 KiB | 292 ms |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Est Savings |
|---|---|
| /products/asco/releasedAssets/fonts/icomoon-df597e8917fff... | 15 ms |
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad | tpc.googlesyndication.com/simgad/7399624849122644176 | 112.6 KiB | 100.4 KiB |
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad | tpc.googlesyndication.com/simgad/15892169833967679435 | 69.1 KiB | 56.9 KiB |
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad | tpc.googlesyndication.com/simgad/5458346969709504817 | 44.3 KiB | 32.0 KiB |
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad | tpc.googlesyndication.com/simgad/8011920652365055857 | 37.3 KiB | 26.7 KiB |
Journal of Clinical OncologyJCO Oncology PracticeJCO Global OncologyJCO Clinica… ul.main-menu > li.nav-item > div.dropdown > div.dropdown-menu | careercenter.asco.org/getasset/87ffee7f-bbee-431d-b285-205089e80301/ | 24.2 KiB | 23.0 KiB |
GUIDELINES div#main-menu > ul.main-menu > li.nav-item > a#menu-item-2 | careercenter.asco.org/getasset/55186d29-5431-4830-9aed-3871ed69b928/ | 19.3 KiB | 18.1 KiB |
| /assets/dist/images/logo.png;v=138a8c3b896ab1b5692879cc44... | 18.1 KiB | 17.6 KiB | |
JCO Precision Oncology Conversations podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/jco-precision-oncology_podcast... | 9.7 KiB | 8.5 KiB |
ASCO Education: By the Book podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/asco-education_podcast-icon-35... | 7.8 KiB | 6.8 KiB |
American Society of Clinical Oncology logo div.container-fluid > div.row > div.col-12 > img.w-100 | ascopubs.org/pb-assets/images/journal-home/about-asco-logo-1697745146487.png | 6.8 KiB | 5.2 KiB |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| ascopubs.org/ | 229 ms |
| /oauth2/aus1goap5nQ33vo7A297/v1/authorize/?client_id=0oa1... | 815 ms |
| /action/ssoReturn?state=https%3A%2F%2Fascopubs.org%2F&err... | 56 ms |
| ascopubs.org/ | 0.0 ms |
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.
Performance issues directly impact user engagement and conversion rates.
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.
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.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| cdn.cookielaw.org/scripttemplates/202510.1.0/otBannerSdk.js | 1.2 s | 1.1 s | 19 ms |
| n011.ascopubs.org/script.js | 673 ms | 641 ms | 5.0 ms |
| /plugins/listener_interest_ranker/ts_194423921ea715082455... | 449 ms | 411 ms | 31 ms |
| /pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31... | 399 ms | 318 ms | 39 ms |
| /pagead/managed/js/activeview/current/ufs_web_display.js | 342 ms | 291 ms | 34 ms |
| ascopubs.org/ | 306 ms | 20 ms | 3.8 ms |
| Unattributable | 289 ms | 47 ms | 0.0 ms |
| assets.adobedtm.com/bd3ece2de486/e2a1c4e6586f/launch-6bb88b0f2095.min.js | 129 ms | 104 ms | 4.7 ms |
| www.googletagmanager.com/gtag/js?id=G-FSJKV1LB0N | 123 ms | 85 ms | 19 ms |
| ascopubs.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 97 ms | 80 ms | 0.9 ms |
| www.googletagmanager.com/gtag/js?id=AW-754189566&cx=c>m=4e64k1 | 96 ms | 78 ms | 17 ms |
| ascopubs.org/products/asco/releasedAssets/js/main.bundle-f0003b195d719f3f961e.js | 74 ms | 51 ms | 17 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
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 3.5 s |
| Other | 420 ms |
| Script Parsing & Compilation | 259 ms |
| Style & Layout | 170 ms |
| Parse HTML & CSS | 74 ms |
| Garbage Collection | 52 ms |
| Rendering | 44 ms |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| ascopubs.org/products/asco/releasedAssets/css/build-c5bca0314db0321e1dcb.css | 137.7 KiB | 130.0 KiB |
| 22.0 KiB | 19.2 KiB |
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
American Society of Clinical Oncology logo div.container-fluid > div.row > div.col-12 > img.w-100 | ascopubs.org/pb-assets/images/journal-home/about-asco-logo-1697745146487.png |
Journal of Clinical Oncology Podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/journal-of-clinical-oncology_p... |
Cancer Stories: The Art of Oncology podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/jco-cancer-stories_podcast-ico... |
JCO Precision Oncology Conversations podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/jco-precision-oncology_podcast... |
JCO Oncology Practice podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/jco-oncology-practice_podcast-... |
ASCO Guidelines podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/asco-guidelines_podcast-icons-... |
ASCO Education: By the Book podcast div.row > div.col-6 > a > img.img-fluid | /pb-assets/images/podcasts/asco-education_podcast-icon-35... |
ASCO Career Center div.ad-wrapper > div.d-none > p#careerWidgetHead > img | ascopubs.org/pb-assets/images/ASC_CareerCenter_RGB-1648049649520.png |
ASCO Publications div.header-middle-content > div.navbar-brand__wrapper > a.navbar-brand > img | ascopubs.org/pb-assets/images/global/header/logo-white-1679404672980.svg |
American Society of Clinical Oncology (ASCO) div.col-md-2 > h1 > a > img.img-fluid | /pb-assets/images/global/header/logo-publisher-white-1679... |
American Society of Clinical Oncology (ASCO) div.row > div.col-12 > a.footer__logo-wrapper > img.footer__logo | /pb-assets/images/global/header/logo-publisher-white-1679... |
April 20, 2026 Volume 44 Issue 12 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
April 2026 Volume 22 Issue 4 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 12 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 2 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 10 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 | |
2026 Volume 3 div.recent-issues__item > a.d-block > div.past-issue__image > img.w-100 |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
JCO Oncology Practice div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCO Global Oncology div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCO Precision Oncology div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCO Oncology Advances div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
ASCO Daily News div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
ASCO Connection div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
The ASCO Post div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
ASCO Podcasts div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
Meeting Abstracts div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
ASCO Guidelines div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
Reprints div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
Advertise div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
E-Alerts div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCO_ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCOOP_ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCOGO_ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCOPO_ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCOCCI_ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
JCOOA_ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
About ASCO div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
Press Center div.footer__sitemap > ul.list-unstyled > li.footer__sitemap__list-item > a.footer__sitemap__list-item-link |
These items highlight common accessibility best practices.
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/. | line 66, col 6 |
| SharedStorage | |
| StorageType.persistent is deprecated. Please use standardized navigator.storage instead. | |
| Fledge |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Failed to load resource: the server responded with a status of 403 () | |
Failed to load resource: the server responded with a status of 404 () | |
ascopubs.org/ line 554, col 0 | Refused to execute script from 'https://ascopubs.org/wro/7a5cea6f64ffe7fb34ea6cda5e74732552d27310~thiss-ds.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled. |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.
Performance issues directly impact user engagement and conversion rates.
Descriptive link text helps search engines understand your content. Learn how to make links more accessible.
Performance issues directly impact user engagement and conversion rates.
| Link destination | Link Text |
|---|---|
| ascopubs.org/authors | LEARN MORE |
Format your HTML in a way that enables crawlers to better understand your app’s content.
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