Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
www.linuxfoundation.org/_hcms/forms/v2.js	300.0 s	200.5 KiB
lfx-segment.platform.linuxfoundation.org/latest/lfx-segment-analytics.min.js	0.0 ms	82.8 KiB
www.linuxfoundation.org/hs-fs/hubfs/DSC_8053.jpg?width=2000&name=DSC_8053.jpg	1209600.0 s	639.9 KiB
/hs-fs/hubfs/oss-elc-na-2026-Social-Snackable.png?width=1...	1209600.0 s	277.7 KiB
js.hubspot.com/web-interactives-embed.js	600.0 s	28.2 KiB
/hubfs/8112310/52214652141_9442befa2e_o 1.png	1209600.0 s	259.8 KiB
d2c7xlmseob604.cloudfront.net/tracker.min.js	0.0 ms	24.8 KiB
/hubfs/8112310/Web Assets_Open Source ROI Survey_Report_T...	1209600.0 s	196.9 KiB
/hs-fs/hubfs/ILT-Social-V2-1-1.webp?width=1200&height=628...	1209600.0 s	153.2 KiB
cmp.osano.com/16A0DbT9yDNIaQkvZ/af2b9f1f-3ac7-4a18-a99a-e487d04f08e6/osano-ui.js	86400.0 s	26.8 KiB
/huawei-technologies-co-ltd.svg	0.0 ms	9.1 KiB
/microsoft-corporation.svg	0.0 ms	6.7 KiB
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/fujitsu-limited.svg	0.0 ms	6.1 KiB
/hs-fs/hubfs/46304026842_d93be3ca4e_o 1.png?width=256&hei...	1209600.0 s	59.7 KiB
/samsung_electronics_co._ltd._1700625975816_0014100000Te0...	0.0 ms	4.8 KiB
lf-platform-documents-prod.s3.amazonaws.com/hitachi-ltd.svg	0.0 ms	4.4 KiB
www.linuxfoundation.org/_hcms/googlefonts/Open_Sans/regular.woff2	1209600.0 s	44.8 KiB
www.linuxfoundation.org/_hcms/googlefonts/Roboto_Slab/700.woff2	1209600.0 s	43.3 KiB
www.linuxfoundation.org/_hcms/googlefonts/Open_Sans/700.woff2	1209600.0 s	43.0 KiB
www.linuxfoundation.org/_hcms/googlefonts/Roboto_Slab/300.woff2	1209600.0 s	42.3 KiB
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/qualcomm-inc.svg	0.0 ms	4.1 KiB
www.linuxfoundation.org/_hcms/googlefonts/Roboto_Slab/regular.woff2	1209600.0 s	41.6 KiB
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/ericsson-ab.svg	0.0 ms	3.8 KiB
/meta_platforms_inc_1714768245542_0014100000TdzwSAAR.svg	0.0 ms	3.8 KiB
js.hsadspixel.net/pixels.js	600.0 s	3.9 KiB
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/google-llc.svg	0.0 ms	3.5 KiB
www.linuxfoundation.org/hubfs/os-c.svg	1209600.0 s	28.7 KiB
/oracle-america-inc.svg	0.0 ms	2.4 KiB
www.linuxfoundation.org/hubfs/lfnetworking-stacked-color%20(1).png	1209600.0 s	23.0 KiB
/jmertic/lf-landscape/refs/heads/main/images/red-hat-inc.svg	300.0 s	2.2 KiB
www.linuxfoundation.org/hubfs/openssf-horizontal-color.png	1209600.0 s	21.5 KiB
/nec_corporation_1744878106355_0014100000Te0QfAAJ.svg	0.0 ms	1.6 KiB
www.linuxfoundation.org/hs/scriptloader/8112310.js?businessUnitId=0	90.0 s	1.5 KiB
/hubfs/hub_generated/template_assets/1/80445472785/177499...	1209600.0 s	12.0 KiB
/hs-fs/hubfs/lf_sustainability_banner.png?width=595&heigh...	1209600.0 s	9.7 KiB
www.linuxfoundation.org/hubfs/cdsc.svg	1209600.0 s	8.3 KiB
/hubfs/hub_generated/template_assets/1/80245626652/177499...	1209600.0 s	8.3 KiB
www.linuxfoundation.org/hubfs/OpenJS%20Logo.png	1209600.0 s	7.8 KiB
/hubfs/hub_generated/template_assets/1/55376723732/174307...	1209600.0 s	7.5 KiB
www.linuxfoundation.org/hubfs/decentralized-identity-foundation-dif.svg	1209600.0 s	7.4 KiB
www.linuxfoundation.org/hubfs/riscvlogo.png	1209600.0 s	6.8 KiB
www.linuxfoundation.org/hubfs/Digital%20Trust%20Logo.svg	1209600.0 s	6.7 KiB
www.linuxfoundation.org/hubfs/lf_mgmt_bp_white.svg	1209600.0 s	6.3 KiB
www.linuxfoundation.org/hubfs/Tux-flat-version.png	1209600.0 s	5.6 KiB
www.linuxfoundation.org/hubfs/lf-security-color.svg	1209600.0 s	5.3 KiB
www.linuxfoundation.org/hubfs/chipsalliance-color.svg	1209600.0 s	4.9 KiB
www.linuxfoundation.org/hubfs/odpi-egeria.svg	1209600.0 s	4.8 KiB
www.linuxfoundation.org/hubfs/pixhawk.jpg	1209600.0 s	4.7 KiB
www.linuxfoundation.org/hubfs/C2PA.svg	1209600.0 s	4.6 KiB
/hubfs/hub_generated/module_assets/1/76935915621/17431386...	1209600.0 s	4.4 KiB
www.linuxfoundation.org/hubfs/clusterduck.svg	1209600.0 s	4.3 KiB
www.linuxfoundation.org/hubfs/spdx-color.svg	1209600.0 s	4.1 KiB
www.linuxfoundation.org/hubfs/cncf-color-3.png	1209600.0 s	3.4 KiB
www.linuxfoundation.org/hubfs/margo_black.svg	1209600.0 s	3.1 KiB
www.linuxfoundation.org/hubfs/jdf3mf.svg	1209600.0 s	3.1 KiB
/hubfs/hub_generated/module_assets/1/83221544887/17431386...	1209600.0 s	3.0 KiB
www.linuxfoundation.org/hubfs/openpowerfoundation.svg	1209600.0 s	2.7 KiB
www.linuxfoundation.org/hubfs/open19.svg	1209600.0 s	2.6 KiB
www.linuxfoundation.org/hubfs/LF%20Logo%20White.svg	1209600.0 s	2.5 KiB
www.linuxfoundation.org/hubfs/openbtes.png	1209600.0 s	2.5 KiB
www.linuxfoundation.org/hubfs/marquez.svg	1209600.0 s	2.4 KiB
www.linuxfoundation.org/hubfs/lfai-milvus.png	1209600.0 s	2.4 KiB
/hubfs/hub_generated/template_assets/1/77283004266/177499...	1209600.0 s	2.3 KiB
www.linuxfoundation.org/hubfs/aomedia_color.svg	1209600.0 s	2.3 KiB
/hubfs/hub_generated/module_assets/1/77362524751/17539764...	1209600.0 s	2.2 KiB
www.linuxfoundation.org/hubfs/finos-horizontal-color%201.png	1209600.0 s	1.9 KiB
/hubfs/hub_generated/module_assets/1/83221544887/17431386...	1209600.0 s	1.7 KiB
/hubfs/hub_generated/module_assets/1/83269086742/17431386...	1209600.0 s	1.5 KiB
/hubfs/hub_generated/module_assets/1/77362524751/17539764...	1209600.0 s	1.5 KiB
/hubfs/hub_generated/module_assets/1/98141763891/17431387...	1209600.0 s	1.5 KiB
/hubfs/hub_generated/module_assets/1/83223551658/17431386...	1209600.0 s	1.4 KiB
/hubfs/hub_generated/module_assets/1/82818538563/17431386...	1209600.0 s	1.3 KiB
/hubfs/hub_generated/module_assets/1/98141763891/17431387...	1209600.0 s	1.2 KiB
/hubfs/hub_generated/module_assets/1/83161917017/17683245...	1209600.0 s	1.2 KiB
/hubfs/hub_generated/module_assets/1/83223551786/17431386...	1209600.0 s	1.2 KiB
/hubfs/hub_generated/template_assets/1/77282240621/177499...	1209600.0 s	1.2 KiB
/hubfs/hub_generated/module_assets/1/83269086742/17431386...	1209600.0 s	1.1 KiB
/hubfs/hub_generated/template_assets/1/77283435922/177499...	1209600.0 s	0 B
/hubfs/hub_generated/template_assets/1/85121828485/177499...	1209600.0 s	0 B
/hubfs/hub_generated/template_assets/1/77282239896/177499...	1209600.0 s	0 B
www.linuxfoundation.org/hs/scriptloader/8112310.js?businessUnitId=0	90.0 s	0 B

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:24.584 source:map[type:text value:[unattributed]]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
DSC_8053 `div.col6 > div.two-col-blocks__block-img-mask > div.two-col-blocks__block-img > img`	www.linuxfoundation.org/hs-fs/hubfs/DSC_8053.jpg?width=2000&name=DSC_8053.jpg	638.9 KiB	618.5 KiB
oss-elc-na-2026-Social-Snackable `div.banner-img-mask__container > div.col6 > div.banner-img-mask__image > img`	/hs-fs/hubfs/oss-elc-na-2026-Social-Snackable.png?width=1...	276.8 KiB	250.8 KiB
ILT-Social-V2-1-1 `div.simple-img-mask__container > div.col6 > div.simple-img-mask__simple-image--widget_1661640438630 > img`	/hs-fs/hubfs/ILT-Social-V2-1-1.webp?width=1200&height=628...	152.3 KiB	126.3 KiB
46304026842_d93be3ca4e_o 1 `div.col6 > div.two-col-blocks__block-img-mask > div.two-col-blocks__block-img > img`	/hs-fs/hubfs/46304026842_d93be3ca4e_o 1.png?width=256&hei...	58.8 KiB	48.4 KiB
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/lfnetworking-stacked-color%20(1).png	22.1 KiB	22.0 KiB
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/openssf-horizontal-color.png	20.5 KiB	20.1 KiB
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/OpenJS%20Logo.png	6.8 KiB	6.0 KiB
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/riscvlogo.png	5.8 KiB	5.8 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

title: Preconnected origins

value: no origins were preconnected

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

title: Preconnect candidates

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
lfx-segment.platform.linuxfoundation.org/latest/lfx-segment-analytics.min.js	82.8 KiB	542 ms
cmp.osano.com/16A0DbT9yDNIaQkvZ/af2b9f1f-3ac7-4a18-a99a-e487d04f08e6/osano.js	42.1 KiB	467 ms
/hubfs/hub_generated/module_assets/1/77362524751/17539764...	2.2 KiB	150 ms
/hubfs/hub_generated/module_assets/1/82818538563/17431386...	1.3 KiB	150 ms
/hubfs/hub_generated/template_assets/1/55376723732/174307...	7.5 KiB	197 ms
/hubfs/hub_generated/module_assets/1/83269086742/17431386...	1.5 KiB	150 ms
/hubfs/hub_generated/module_assets/1/83223551658/17431386...	1.4 KiB	244 ms
/hubfs/hub_generated/module_assets/1/83221544887/17431386...	1.7 KiB	244 ms

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
/huawei-technologies-co-ltd.svg	http/1.1
/microsoft-corporation.svg	http/1.1
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/fujitsu-limited.svg	http/1.1
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/ericsson-ab.svg	http/1.1
/oracle-america-inc.svg	http/1.1
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/qualcomm-inc.svg	http/1.1
lf-master-organization-logos-prod.s3.us-east-2.amazonaws.com/google-llc.svg	http/1.1

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

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 80 ms 230.9 KiB

URL	Transfer Size	Est Savings
www.linuxfoundation.org/_hcms/forms/v2.js	192.9 KiB	76.6 KiB
www.googletagmanager.com/gtag/js?id=G-FBYHX832ZD&cx=c&gtm=4e6460	156.7 KiB	64.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-WWBXMJK	136.0 KiB	62.0 KiB
lfx-segment.platform.linuxfoundation.org/latest/lfx-segment-analytics.min.js	81.9 KiB	27.5 KiB

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 7.2 KiB

URL	Transfer Size	Est Savings
cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.9.0/slick.js	12.5 KiB	5.1 KiB
/hubfs/hub_generated/template_assets/1/80445472785/177499...	11.1 KiB	2.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
www.linuxfoundation.org/hs-fs/hubfs/DSC_8053.jpg?width=2000&name=DSC_8053.jpg	639.9 KiB
/hs-fs/hubfs/oss-elc-na-2026-Social-Snackable.png?width=1...	277.7 KiB
/hubfs/8112310/52214652141_9442befa2e_o 1.png	259.8 KiB
www.linuxfoundation.org/_hcms/forms/v2.js	200.5 KiB
/hubfs/8112310/Web Assets_Open Source ROI Survey_Report_T...	196.9 KiB
www.googletagmanager.com/gtag/js?id=G-FBYHX832ZD&cx=c&gtm=4e6460	156.8 KiB
/hs-fs/hubfs/ILT-Social-V2-1-1.webp?width=1200&height=628...	153.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-WWBXMJK	136.4 KiB
lfx-segment.platform.linuxfoundation.org/latest/lfx-segment-analytics.min.js	82.8 KiB
/hs-fs/hubfs/46304026842_d93be3ca4e_o 1.png?width=256&hei...	59.7 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.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/lfnetworking-stacked-color%20(1).png
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/openssf-horizontal-color.png
DSC_8053 `div.col6 > div.two-col-blocks__block-img-mask > div.two-col-blocks__block-img > img`	www.linuxfoundation.org/hs-fs/hubfs/DSC_8053.jpg?width=2000&name=DSC_8053.jpg
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/OpenJS%20Logo.png
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/Tux-flat-version.png
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/cncf-color-3.png
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`	www.linuxfoundation.org/hubfs/finos-horizontal-color%201.png
div.header__row > div.header_branding > a > img `div.header__row > div.header_branding > a > img`	www.linuxfoundation.org/hubfs/LF%20Logo%20White.svg
LF Logo White `div.footer__left > div.footer__logo > a > img`	www.linuxfoundation.org/hubfs/LF%20Logo%20White.svg

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

●Time to Interactive 1.6 s

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●LCP breakdown

●Optimize viewport for mobile

●Max Potential First Input Delay 50 ms

●Minify CSS

●Reduce unused CSS

●User Timing marks and measures 5 user timings

●JavaScript execution time 0.5 s

●Minimizes main-thread work 1.5 s

●Avoid long main-thread tasks 1 long task found

●Avoid non-composited animations 2 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 170 ms

●Server Backend Latencies 300 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 30 ms

●Avoid large layout shifts 4 layout shifts found

○INP breakdown

○LCP request discovery

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

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
PROJECTS View All Projects Host Your Project Security `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`
NEWSROOM Press Releases `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`
LF RESEARCH Latest Research Sponsor a Study Leadership & Advisory Board Resear… `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`
LFX PLATFORM LFX Home LFX Tools LFX Insights Create an LFX Account `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`
RESOURCES Blog Publications Open Source Guides Webinars Case Studies `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`
LF EVENTS Home Sponsor an Event Submit a Talk Code of Conduct `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`
LF EDUCATION Home Course Catalog Resources `div.footer__right-content-menu > div.footer__row-list > div.menu-group > div.child-menu_links`

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.header__row > div.header_content > div.header-left > button.burger-button `div.header__row > div.header_content > div.header-left > button.burger-button`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.header__row > div.header_branding > a > img `div.header__row > div.header_branding > a > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`

Form elements without effective labels can create frustrating experiences for screen reader users. Learn more about the `select` element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
English Japan China Europe `div.top__bar-wrapper > div.right-items > div.menu--language > select.menu--language__list`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.top__bar > div.top__bar-wrapper > div.right-items > a.search-popup-link `div.top__bar > div.top__bar-wrapper > div.right-items > a.search-popup-link`
header#js-top-header > div.header__row > div.header_branding > a `header#js-top-header > div.header__row > div.header_branding > a`
div.two-col-blocks__inner-content > div.two-col-blocks__supporting-content > p > a `div.two-col-blocks__inner-content > div.two-col-blocks__supporting-content > p > a`
div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image `div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image`
div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image `div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image`
div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image `div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image`
div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image `div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image`
div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image `div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image`
div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image `div.projects-tabs-col__container > div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image`
div.footer__container > div.footer__left > div.footer__social-links > a `div.footer__container > div.footer__left > div.footer__social-links > a`
div.footer__container > div.footer__left > div.footer__social-links > a `div.footer__container > div.footer__left > div.footer__social-links > a`
div.footer__container > div.footer__left > div.footer__social-links > a `div.footer__container > div.footer__left > div.footer__social-links > a`
div.footer__container > div.footer__left > div.footer__social-links > a `div.footer__container > div.footer__left > div.footer__social-links > a`
div.footer__container > div.footer__left > div.footer__social-links > a `div.footer__container > div.footer__left > div.footer__social-links > a`

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

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
Privacy Policy `div.osano-cm-window > div#6c6b1ef7-ef96-44c3-a601-4f3c6396f42a > div.osano-cm-dialog__content > a.osano-cm-storage-policy`
Storage Preferences `div#6c6b1ef7-ef96-44c3-a601-4f3c6396f42a > div.osano-cm-dialog__content > p.osano-cm-content__drawer-links > a.osano-cm-drawer-links__link`
Save `div.osano-cm-window > div#6c6b1ef7-ef96-44c3-a601-4f3c6396f42a > div.osano-cm-dialog__buttons > button.osano-cm-save`
Accept All `div.osano-cm-window > div#6c6b1ef7-ef96-44c3-a601-4f3c6396f42a > div.osano-cm-dialog__buttons > button.osano-cm-accept-all`
Reject Non-Essential `div.osano-cm-window > div#6c6b1ef7-ef96-44c3-a601-4f3c6396f42a > div.osano-cm-dialog__buttons > button.osano-cm-denyAll`
JOIN `div.header_content > div.header-right > div.header-button > a.hs-button`
LEARN MORE `div.hero-img-mask__container > div.col6 > div.hero-img-mask__cta > a.hs-button`
open source projects `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
developers trained `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
developers contributing code `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
lines of code added weekly `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
contributing organizations `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
upcoming events `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
standards and specifications `div.counter-col__inner > div.counter-col__counter > div.counter-col__content > a.counter-col__link`
Meet our members. `div.slider > div.slider > div.slider > a`
Open Hardware `div.projects-tabs-col > ul.filter-menu > li.filter-menu__link > label`
Open Standards `div.projects-tabs-col > ul.filter-menu > li.filter-menu__link > label`
Open Data `div.projects-tabs-col > ul.filter-menu > li.filter-menu__link > label`
SEE ALL PROJECTS `section.section--widget_1662844101751 > div.projects-tabs-col > div.align--center > a.projects-tabs-col__button`
Learn more `p > span > strong > a`
Learn more `p > span > strong > a`
SAVE NOW `div.simple-img-mask__container > div.col6 > div.simple-img-mask__cta > a.hs-button`
REGISTER NOW `div.banner-img-mask__container > div.col6 > div.banner-img-mask__cta > a.hs-button`
READ NOW `div.banner-img-mask__container > div.col6 > div.banner-img-mask__cta > a.hs-button`
NEWSROOM `div.resources-cards > div.section-title__wrapper > div.section-title__link > a.section-title__link-text`
fieldset.form-columns-3 > div.hs_firstname > div.input > input#firstname-e5c83800-1206-402c-9050-decfe094cca8_5878 `fieldset.form-columns-3 > div.hs_firstname > div.input > input#firstname-e5c83800-1206-402c-9050-decfe094cca8_5878`
fieldset.form-columns-3 > div.hs_lastname > div.input > input#lastname-e5c83800-1206-402c-9050-decfe094cca8_5878 `fieldset.form-columns-3 > div.hs_lastname > div.input > input#lastname-e5c83800-1206-402c-9050-decfe094cca8_5878`
fieldset.form-columns-3 > div.hs_email > div.input > input#email-e5c83800-1206-402c-9050-decfe094cca8_5878 `fieldset.form-columns-3 > div.hs_email > div.input > input#email-e5c83800-1206-402c-9050-decfe094cca8_5878`
Privacy Policy `div.hs-richtext > p > u > a`
form#hsForm_e5c83800-1206-402c-9050-decfe094cca8_5878 > div.hs_submit > div.actions > input.hs-button `form#hsForm_e5c83800-1206-402c-9050-decfe094cca8_5878 > div.hs_submit > div.actions > input.hs-button`

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
LF EDUCATION `div.simple-img-mask__wrapper > div.simple-img-mask__container > div.col6 > h6.simple-img-mask__pre-title`
May 18-20, 2026 \| Minneapolis, Minnesota `div.banner-img-mask__container > div.col6 > div.banner-img-mask__supporting-content > h4`
FEATURED RESEARCH `div.banner-img-mask__wrapper > div.banner-img-mask__container > div.col6 > h6.banner-img-mask__pre-title`
ANNOUNCEMENT `div.resources-cards__container > a.box-widget_1661719294883 > div.resources-cards__content > h6.resources-cards__tagline`
ANNOUNCEMENT `div.resources-cards__container > a.box-widget_1661719294883 > div.resources-cards__content > h6.resources-cards__tagline`
ANNOUNCEMENT `div.resources-cards__container > a.box-widget_1661719294883 > div.resources-cards__content > h6.resources-cards__tagline`

These are opportunities to improve keyboard navigation in your application.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These are opportunities to improve the interpretation of your content by users in different locales.

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

●`[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

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

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

●Input buttons have discernible text.

●Form elements have associated labels

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

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

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

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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●Links are distinguishable without relying on color.

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

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

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

●Touch targets have sufficient size and spacing.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●All heading elements contain content.

●Identical links have the same purpose.

○`[accesskey]` values are unique

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○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

○ARIA IDs are unique

○No form fields have multiple labels

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

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

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

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

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

○`<object>` elements have alternate text

○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>`.

○Uses ARIA roles only on compatible elements

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

○Elements with visible text labels have matching accessible names.

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

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

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
www.linuxfoundation.org/ line 293, col 2	`ReferenceError: $ is not defined at https://www.linuxfoundation.org/:294:3`
cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js line 1, col 28759	`Uncaught TypeError: Cannot read properties of undefined (reading 'top')`

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.

URL	Map URL
www.linuxfoundation.org/_hcms/forms/v2.js
lfx-segment.platform.linuxfoundation.org/latest/lfx-segment-analytics.min.js	lfx-segment.platform.linuxfoundation.org/latest/lfx-segment-analytics.min.js.map
cmp.osano.com/16A0DbT9yDNIaQkvZ/af2b9f1f-3ac7-4a18-a99a-e487d04f08e6/osano.js	/16A0DbT9yDNIaQkvZ/af2b9f1f-3ac7-4a18-a99a-e487d04f08e6/o...
cmp.osano.com/16A0DbT9yDNIaQkvZ/af2b9f1f-3ac7-4a18-a99a-e487d04f08e6/osano-ui.js	/16A0DbT9yDNIaQkvZ/af2b9f1f-3ac7-4a18-a99a-e487d04f08e6/o...
www.linuxfoundation.org/hs/hsstatic/HubspotToolsMenu/static-1.640/js/index.js	static.hsappstatic.net/HubspotToolsMenu/static-1.640/js/index.js.map
js.hsadspixel.net/pixels.js	/adsscriptloaderstatic/static-1.3012/bundles/pixels-relea...

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●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

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.linuxfoundation.org/projects?hsLang=en	LEARN MORE
www.linuxfoundation.org/about/join?hsLang=en	LEARN MORE
www.linuxfoundation.org/projects/hosting?hsLang=en	LEARN MORE
www.linuxfoundation.org/lf-security?hsLang=en	Learn more
www.linuxfoundation.org/projects/sustainability?hsLang=en	Learn more

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.header__row > div.header_branding > a > img `div.header__row > div.header_branding > a > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.slick-track > div.slick-slide > div > img `div.slick-track > div.slick-slide > div > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`
div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img `div.flex-row > div.projects-tabs-col__wrapper-item > a.project__image > img`

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.two-col-blocks__inner-content > div.two-col-blocks__supporting-content > p > a `div.two-col-blocks__inner-content > div.two-col-blocks__supporting-content > p > a`

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

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`