linuxfoundation.org website review

90 files are served with short cache lifetimes, so returning visitors download them again (1.0 MB).

About 724 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.6 s faster on a phone.

16 files block the first paint until they finish downloading. Deferring or inlining them could save about 2.4 s.

Your mobile performance score is 40 (desktop: 62). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

8 third-party services load with your homepage (Google Tag Manager, Facebook and transcend-cdn.com and others), adding 1.6 MB and 1.5 s of main-thread time.

6 images could be 900 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Google Tag Manager costs a phone 733 ms of main-thread work and 847 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

20 long tasks block the main thread while loading, the longest for 424 ms. During a long task the page ignores taps.

A phone's processor spends 3.7 s on main-thread work while loading, 1.9 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Polyfills for old browsers add 37 KiB JavaScript that modern phones do not need.

About 18 KiB of CSS is downloaded but never applied on this page.

7 KiB could be saved by minifying JavaScript.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Your largest element takes 18.9 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Decentralized innovation. Built on trust.”.

The page becomes fully interactive after 24.9 s. Good is under 3.8 s.

Visually, the page fills in at 9.2 s (Speed Index). Good is under 3.4 s.

The first text or image appears after 4.4 s on a phone. Good is under 1.8 s.

Scripts block taps and scrolling for 717 ms in total while the page loads. Good is under 200 ms.

Real visitors wait 2.6 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors wait 221 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Real visitors see the first content after 2.5 s (75th percentile). Good is under 1.8 s.

5 images have no width and height attributes, so the layout jumps as each one loads.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 236 ms to 244 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 2.3 s to 2.4 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 3.7 MB in 150 requests on a phone: scripts 1.9 MB (40), images 1.4 MB (58) and fonts 218 KiB (5). Under 2 MB keeps phones on slow connections fast.

3 images further down the page (120 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 1.05 g of CO₂e: 125.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

7 elements use ARIA attributes their role does not allow, which confuses screen readers.

1 button has no accessible name, so screen readers announce just “button”.

25 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

<html> element must have a lang attribute: 1 element on the page fails this check, rated serious by axe-core.

25 images have no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 4 elements on the page fail this check, rated moderate by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 2 elements on the page fail this check, rated moderate by axe-core.

Main landmark should not be contained in another landmark: 1 element on the page fails this check, rated moderate by axe-core.

Document should not have more than one main landmark: 1 element on the page fails this check, rated moderate by axe-core.

16 form fields have no label, so screen readers announce an empty box and autofill guesses.

12 visible links have no text or label, so screen readers cannot say where they go.

The <html> element has no lang attribute, so screen readers may read the page in the wrong voice and accent.

Headings should not be empty: 1 element on the page fails this check, rated minor by axe-core.

Headings skip levels (h2 → h6, h2 → h4 and h4 → h6), which makes the page harder to scan with a screen reader.

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

No favicon is declared in the HTML, so browser tabs and Google's mobile results may show a generic icon.

5 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

1 link has no real href, so search engines can't follow it.

The homepage links to 83 pages on linuxfoundation.org and 68 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no /llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

/brand-guidelines and /about/contact have no meta description, so Google writes the search snippet from whatever text it finds.

/about/leadership, /about/contact and /projects/digital-trust have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 38 found) and read each the way a search engine does.

1 image failed to load on a phone, for example https://bat.bing.com/action/0?ti=20117064&tm=gtm002&Ver=2&mid=426ca72d-2046-41af-b1ab-9b37c7535a93&bo=2&sid=a6047b70d14911f19e1b55373417fbc3&vid=a6049170d14911f1a5618d0f34f33fed&vids=1&msclkid=N&gtm_t.

3 errors were logged to the browser console while the page loaded, for example “Uncaught TypeError: Cannot assign to read only property 'open' of object '#<Window>'”.

Large scripts ship without source maps.

X-Content-Type-Options: nosniff is missing, so browsers may guess file types.

2 links go through two or more redirects, for example https://www.linuxfoundation.org/zh/chinese/?hsLang=en.

No Permissions-Policy header to switch off camera, microphone and location for embedded content.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

linuxfoundation.org is registered until Jan 2027. Make sure auto-renew is on and the card on file is current.

linuxfoundation.org has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

linuxfoundation.org's DNS answers are not signed. DNSSEC stops attackers forging them to send visitors or email elsewhere; most registrars switch it on in a click, though most sites still run without it.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 581 words of visible text.

DMARC is set to p=none, so mail pretending to be linuxfoundation.org is still delivered. Reports are on, so moving to quarantine is the next step.

Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, HubSpot and LinkedIn Insight and 4 mores (measured from a US location before any click). A consent tool (HubSpot cookie banner) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 18 cookies (measured from a US location before any click).

Loading the homepage contacts 40 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.