Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.Detailed Report
Audit breakdown by category with detailed findings.
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Est Savings |
|---|---|
| a.fsdn.com/sd/font/sdicon.woff?a6bec9f7b7c53257 | 80 ms |
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 |
|---|---|---|
| a.fsdn.com/sd/all-minified.js?a6bec9f7b7c53257 | 127.9 KiB | 120 ms |
| a.fsdn.com/sd/css/app.css?a6bec9f7b7c53257 | 23.7 KiB | |
| a.fsdn.com/sd/js/scripts/ad_top.js?a6bec9f7b7c53257 | 110 B | |
| a.fsdn.com/sd/classic.ssl.css?a6bec9f7b7c53257 | 34.3 KiB | 274 ms |
| a.fsdn.com/con/js/sftheme/cmp-slashdot.js?2026-04-09 | 21.8 KiB | |
| a.fsdn.com/con/css/sftheme/sandiego/cmp.css?2026-04-09 | 1.3 KiB | |
| a.fsdn.com/sd/js/scripts/asg_embed.js?a6bec9f7b7c53257 | 281 B |
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.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| cdn.consentmanager.net/delivery/js/cmp_en.min.js | 86400.0 s | 100.5 KiB |
| /delivery/customdata/bV8xLndfMTIxMjYucl9HRFBSLmxfZW4uZF8y... | 3600.0 s | 16.1 KiB |
| slashdot.org/cdn-cgi/challenge-platform/h/g/scripts/jsd/b0a7532ac8ec/main.js? | 14400.0 s | 12.2 KiB |
| slashdot.org/images/js.gif?601 | 0.0 ms | 228 B |
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 | |
|---|---|---|---|
MongoDB div.sticky-inner > div.sticky-left > div.sticky-brand > img | a.fsdn.com/con/img/hi-text.png | 12.6 KiB | 12.4 KiB |
Piracy header > span#topic-181720598 > a > img | a.fsdn.com/sd/topics/piracy_64.png | 5.2 KiB | 5.0 KiB |
AI header > span#topic-181720862 > a > img | a.fsdn.com/sd/topics/ai_64.png | 4.8 KiB | 4.5 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Diagnostics
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| a.fsdn.com/sd/classic.ssl.css?a6bec9f7b7c53257 | 34.3 KiB | 6.8 KiB |
| a.fsdn.com/sd/css/app.css?a6bec9f7b7c53257 | 23.7 KiB | 5.8 KiB |
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 |
|---|---|---|
| a.fsdn.com/sd/classic.ssl.css?a6bec9f7b7c53257 | 34.2 KiB | 30.2 KiB |
| a.fsdn.com/sd/css/app.css?a6bec9f7b7c53257 | 23.7 KiB | 20.8 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| a.fsdn.com/sd/all-minified.js?a6bec9f7b7c53257 | 127.8 KiB | 92.3 KiB |
| cdn.consentmanager.net/delivery/js/cmp_en.min.js | 100.1 KiB | 35.8 KiB |
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| a.fsdn.com/con/js/sftheme/cmp-slashdot.js?2026-04-09 | 21.7 KiB | 8.7 KiB |
| a.fsdn.com/con/js/sandiego/floating-unit.js?2026-04-09 | 9.4 KiB | 3.3 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 | |
|---|---|
MongoDB div.sticky-inner > div.sticky-left > div.sticky-brand > img | a.fsdn.com/con/img/hi-text.png |
article#firehose-1127235O3 > div.body > div.ntv-preview-img-wrapper > img.nel-image article#firehose-1127235O3 > div.body > div.ntv-preview-img-wrapper > img.nel-image | |
article#firehose-11276O211 > div.body > div.ntv-preview-img-wrapper > img.nel-image article#firehose-11276O211 > div.body > div.ntv-preview-img-wrapper > img.nel-image | |
body.anon > img body.anon > img | slashdot.org/images/js.gif?601 |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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
Performance issues directly impact user engagement and conversion rates.
| Element | Layout shift score |
|---|---|
Boston Dynamics' Robot Dog Can Now Read Gauges, Spot Spills, and Reason (ieee.o… div.main-content > div#firehose > div#firehoselist > article#firehose-181721730 | 0.279 |
MongoDB Atlas: Multi-cloud, modern database on AWS, Azure, and Google Cloud. Ge… body.anon > section > div.container | 0.066 |
MongoDB Atlas: Multi-cloud, modern database on AWS, Azure, and Google Cloud. Ge… body.anon > section > div.container | 0.066 |
By the end of 2026, how useful do you think agentic/multi-agent AI systems will… aside#slashboxes > article.nosort > section#poll-content > div.units-6 | 0.032 |
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
ARIA
ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more about valid ARIA roles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Topics:
Devices
Build
Entertainment
Technology
Open Source
Science
… body.anon > div.container > div.nav-secondary-wrap > nav.nav-secondary |
Today
Tuesday
Monday
Sunday
Saturday
Friday
Thursday
Wednesday
Submit Story body.anon > footer#fhft > nav |
FAQ Story Archive Hall of Fame Advertising Terms Privacy Statement About Feedba… body.anon > footer#ft > nav.grid_10 |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Names and labels
When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
nav.nav-user > div#main-top-nav-wrapper > form#search > button.btn nav.nav-user > div#main-top-nav-wrapper > form#search > button.btn |
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
article#firehose-1127235O3 > div.body > div.ntv-preview-img-wrapper > img.nel-image article#firehose-1127235O3 > div.body > div.ntv-preview-img-wrapper > img.nel-image |
article#firehose-11276O211 > div.body > div.ntv-preview-img-wrapper > img.nel-image article#firehose-11276O211 > div.body > div.ntv-preview-img-wrapper > img.nel-image |
body.anon > img body.anon > img |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Contrast
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
I DO NOT ACCEPT div.cmpboxbtns > span#cmpwelcomebtnno > a.cmpboxbtn > span#cmpbntnotxt |
I ACCEPT div.cmpboxbtns > span#cmpwelcomebtnyes > a.cmpboxbtn > span#cmpbntyestxt |
Firehose ul.nav-site > li > ul.filter-firehose > li.nav-label |
Submit div.container > div.nav-wrap > nav.nav-primary > a.btn |
form#search > div.form-group > div.input-group > input form#search > div.form-group > div.input-group > input |
or nav.nav-user > div#main-top-nav-wrapper > ul.user-access > li.nav-label |
Topics: div.nav-secondary-wrap > nav.nav-secondary > ul > li.nav-label |
Follow us: div.nav-secondary-wrap > nav.nav-social > ul > li.nav-label |
(ieee.org) h2.story > span#title-181721730 > span.no > a.story-sourcelnk |
(arstechnica.com) h2.story > span#title-181721070 > span.no > a.story-sourcelnk |
Sponsored Content header > div.ntv-sponsored-disclaimer > a.ntv_link777074-148399 > span |
Compare Now article#firehose-1127235O3 > div.body > div.p > span.nel-button |
(cnn.com) h2.story > span#title-181720998 > span.no > a.story-sourcelnk |
(torrentfreak.com) h2.story > span#title-181720598 > span.no > a.story-sourcelnk |
(yahoo.com) h2.story > span#title-181717058 > span.no > a.story-sourcelnk |
(variety.com) h2.story > span#title-181711680 > span.no > a.story-sourcelnk |
(nytimes.com) h2.story > span#title-181716852 > span.no > a.story-sourcelnk |
(cordcuttersnews.com) h2.story > span#title-181712216 > span.no > a.story-sourcelnk |
(pcmag.com) h2.story > span#title-181712470 > span.no > a.story-sourcelnk |
(windowscentral.com) h2.story > span#title-181711540 > span.no > a.story-sourcelnk |
(theregister.com) h2.story > span#title-181711462 > span.no > a.story-sourcelnk |
FEATURED CONTENT header > div.ntv-sponsored-disclaimer > a.ntv_link777074-148399 > span |
Compare Now article#firehose-11276O211 > div.body > div.p > span.nel-button |
By the end of 2026, how useful do you think agentic/multi-agent AI systems will… article.nosort > section#poll-content > div.units-6 > h3 |
vote now div.units-6 > form#pollBooth > div.poll-controls > button.btn-polls |
2.2B downloads ul.sf_widget > li > a > span.sf-size |
1.5B downloads ul.sf_widget > li > a > span.sf-size |
899M downloads ul.sf_widget > li > a > span.sf-size |
686M downloads ul.sf_widget > li > a > span.sf-size |
631M downloads ul.sf_widget > li > a > span.sf-size |
FAQ nav.grid_10 > ul > li > a |
Story Archive nav.grid_10 > ul > li > a |
Hall of Fame nav.grid_10 > ul > li > a |
Advertising nav.grid_10 > ul > li > a |
Terms nav.grid_10 > ul > li > a |
Privacy Statement nav.grid_10 > ul > li > a |
About nav.grid_10 > ul > li > a |
Feedback nav.grid_10 > ul > li > a |
Mobile View nav.grid_10 > ul > li > a |
Blog nav.grid_10 > ul > li > a |
Cookie Choices nav.grid_10 > ul > li > a#cookie-choices-link |
Privacy Choices ul > li > a#opt-out-link > a |
These are opportunities to improve the legibility of your content.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Hall of Fame nav.grid_10 > ul > li > a |
Advertising nav.grid_10 > ul > li > a |
Blog nav.grid_10 > ul > li > a |
Cookie Choices nav.grid_10 > ul > li > a#cookie-choices-link |
These items highlight common accessibility best practices.
Screen readers have features to make navigating tables easier. Ensuring that `<td>` elements in a large table (3 or more cells in width and height) have an associated table header may improve the experience for screen reader users. Learn more about table headers.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
2013 Explosions at the Boston Marathon
1105
2005 Does Adblock Violate A Social… aside#slashboxes > article#thisday > section#thisday-content > table.thisday-tb |
Best Practices
General
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 |
|---|---|
| SharedStorage | |
| StorageType.persistent is deprecated. Please use standardized navigator.storage instead. | |
| Fledge |
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.
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
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
binspam body.anon > section > menu#nix-reasons > a.tag |
dupe body.anon > section > menu#nix-reasons > a.tag |
notthebest body.anon > section > menu#nix-reasons > a.tag |
offtopic body.anon > section > menu#nix-reasons > a.tag |
slownewsday body.anon > section > menu#nix-reasons > a.tag |
stale body.anon > section > menu#nix-reasons > a.tag |
stupid body.anon > section > menu#nix-reasons > a.tag |
fresh body.anon > section > menu#nod-reasons > a.tag |
funny body.anon > section > menu#nod-reasons > a.tag |
insightful body.anon > section > menu#nod-reasons > a.tag |
interesting body.anon > section > menu#nod-reasons > a.tag |
maybe body.anon > section > menu#nod-reasons > a.tag |
offtopic body.anon > section > menu#comment-nix-reasons > a.tag |
flamebait body.anon > section > menu#comment-nix-reasons > a.tag |
troll body.anon > section > menu#comment-nix-reasons > a.tag |
redundant body.anon > section > menu#comment-nix-reasons > a.tag |
overrated body.anon > section > menu#comment-nix-reasons > a.tag |
insightful body.anon > section > menu#comment-nod-reasons > a.tag |
interesting body.anon > section > menu#comment-nod-reasons > a.tag |
informative body.anon > section > menu#comment-nod-reasons > a.tag |
funny body.anon > section > menu#comment-nod-reasons > a.tag |
underrated body.anon > section > menu#comment-nod-reasons > a.tag |
descriptive body.anon > section > menu#tag-nod-reasons > a.tag |
typo body.anon > section > menu#feedback-menu > a.tag |
dupe body.anon > section > menu#feedback-menu > a.tag |
error body.anon > section > menu#feedback-menu > a.tag |
Sponsored Content ? article#firehose-1127235O3 > header > div.ntv-sponsored-disclaimer > a.ntv_link777074-148399 |
FEATURED CONTENT article#firehose-11276O211 > header > div.ntv-sponsored-disclaimer > a.ntv_link777074-148399 |
To appear in search results, crawlers need access to your app.
Content Best Practices
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
article#firehose-1127235O3 > div.body > div.ntv-preview-img-wrapper > img.nel-image article#firehose-1127235O3 > div.body > div.ntv-preview-img-wrapper > img.nel-image |
article#firehose-11276O211 > div.body > div.ntv-preview-img-wrapper > img.nel-image article#firehose-11276O211 > div.body > div.ntv-preview-img-wrapper > img.nel-image |
body.anon > img body.anon > img |
Format your HTML in a way that enables crawlers to better understand your app’s content.