C — https://blender.org | BeaverCheck Audit

Site Health

Score: 76 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

Lean and efficient — low environmental impact per visit.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

WordPress · 413 peers

You 76

Avg 74

At average

0 50 100

Better than 67% of WordPress sites See full WordPress benchmark →

Bootstrap · 468 peers

You 76

Avg 73

At average

0 50 100

Better than 72% of Bootstrap sites See full Bootstrap benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

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

Security › Security Headers

HSTS header is missing

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

Security › Security Headers

No Content-Security-Policy header found

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

Security › Content Security Policy

6 image(s) missing alt attribute

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

Accessibility › Alt Text Quality

No <main> landmark found

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

Accessibility › Landmark Structure

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fblender.org)](https://beavercheck.com/results/10e54756-0091-4f1a-b930-04c3b0aa4404)

HTML

<a href="https://beavercheck.com/results/10e54756-0091-4f1a-b930-04c3b0aa4404"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fblender.org" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fblender.org

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Addressing the critical issues below would have the most immediate impact on your user trust.

3 security gaps detected — browsers may warn visitors about your site.

2 accessibility issues exclude users who rely on assistive technology.

Could reach Estimate based on resolving critical issues

Conversion Barriers

1 critical 5 warning

6 barrier(s) likely increasing bounce by ~23%.

Speed (1)

Page takes 12.8s to load

+12% bounce

Users abandon at ~3s — you're 10.3s over the 2.5s threshold

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

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Content (1)

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Navigation (2)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

1 broken link(s) on the page

+2% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

€383 investment → €1,943/month returns + EUR 120,500,000 risk avoided

Payback period: < 1 month First-year ROI: +5996%

Investment

€383

4h · 5 findings

Monthly returns

€1,943 /mo

~€23,318 / year

Conversions recovered €1,943
Bandwidth savings €0.61

Regulatory risk avoided

EUR 120,500,000

if kept compliant

ePrivacy Directive EUR 100,000,000
GDPR EUR 20,000,000
EAA EUR 500,000

Payback period

0 12mo 24mo

€128 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

€383

4.5 developer hours at €85/hr

Based on European Union rates (€85/hr)

Quick wins

€128 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,667 / month at risk

~€120,500,007 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveGDPREAA

No privacy policy link detected
GDPR: EUR 10,000 – EUR 20,000,000
Trackers detected but no cookie policy found
GDPR: EUR 5,000 – EUR 10,000,000
Trackers detected but no cookie policy found
GDPR: EUR 10,000 – EUR 20,000,000

+6 more

Bandwidth Waste

€0.61 /mo

8228.6 MB/mo × 0.074 EUR/GB

Optimize transfer: save ~823 KB per page load
Saves €0.61/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

100

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

4.45 s

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

12.78 s

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

0 ms

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

0.048

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

4.83 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.

13.12 s

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/wp-content/themes/bthree/assets/fonts/Inter-VariableFont...	14400.0 s	412.3 KiB
www.blender.org/wp-content/uploads/2026/02/brc_poster_clean.jpg	14400.0 s	220.7 KiB
www.blender.org/wp-content/uploads/2026/03/blender_51_artwork_cropped.webp	14400.0 s	176.3 KiB
www.blender.org/wp-content/uploads/2019/07/animation01-1280x720.jpg?x12104	14400.0 s	150.5 KiB
www.blender.org/wp-content/uploads/2026/01/bcon_austin_2026.png	14400.0 s	149.9 KiB
www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104	14400.0 s	140.2 KiB
www.blender.org/wp-content/uploads/2019/07/blender_vfx-1280x720.jpg?x12104	14400.0 s	136.5 KiB
www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104	14400.0 s	135.9 KiB
/wp-content/uploads/2019/07/hero_p31_screenshot-1280x720....	14400.0 s	133.5 KiB
/wp-content/uploads/2025/10/geometry_workshop_september_2...	14400.0 s	124.1 KiB
www.blender.org/wp-content/uploads/2019/07/vse_custom_grade-1280x720.jpg?x12104	14400.0 s	105.0 KiB
www.blender.org/wp-content/uploads/2021/10/blender_today_pablo.jpg	14400.0 s	82.5 KiB
www.blender.org/wp-content/themes/bthree/style.css?x34959	14400.0 s	79.7 KiB
www.blender.org/wp-content/uploads/2021/10/nodevember.jpg	14400.0 s	66.8 KiB
code.blender.org/wp-content/uploads/2025/10/volume_grids_thumbnail-480x270.png	14400.0 s	65.1 KiB
www.blender.org/wp-content/uploads/2021/10/daniel_martinez_lara_annecy.jpg	14400.0 s	53.0 KiB
www.blender.org/wp-content/themes/bthree/assets/js/generated/tutti.min.js?x34959	14400.0 s	46.2 KiB
www.blender.org/wp-content/uploads/2021/10/creating_worlds_ian_hubert.jpg	14400.0 s	45.3 KiB
www.blender.org/wp-content/themes/bthree/assets/fonts/fontutti.woff2?4c873d21	14400.0 s	28.1 KiB
www.blender.org/wp-content/uploads/2021/08/blender_fund_hex-e1629996297522.png	14400.0 s	23.5 KiB
/wp-includes/js/dist/script-modules/interactivity/index.m...	14400.0 s	14.8 KiB
/wp-includes/js/dist/script-modules/interactivity/index.m...	14400.0 s	14.7 KiB
code.blender.org/wp-content/uploads/2026/02/winter_quality_2026-480x270.jpg	14400.0 s	14.0 KiB
code.blender.org/wp-content/uploads/2025/10/gsoc_2025-480x270.jpg	14400.0 s	13.4 KiB
www.blender.org/wp-content/uploads/2021/10/khronos.png	14400.0 s	12.5 KiB
www.blender.org/wp-content/uploads/2021/10/linux_foundation.png	14400.0 s	10.6 KiB
/files/public/thumbnail/92/ec/92ecaa98d33bb2b10e12051e2e6...	1728000.0 s	54.8 KiB
/files/public/thumbnail/c9/f4/c9f4a37cd2911fb079a563440d3...	1728000.0 s	51.3 KiB
/files/public/thumbnail/b9/0c/b90c5f218ca21f9a7465298fb3d...	1728000.0 s	45.5 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
www.blender.org/wp-includes/js/wp-emoji-release.min.js?ver=6.9.4	14400.0 s	5.3 KiB
analytics.blender.org/js/pa-U2drbvocUhlojMlK4BOLL.js	60.0 s	2.7 KiB
/files/public/thumbnail/c9/b9/c9b990e4614c068ed156d41de68...	1728000.0 s	27.5 KiB
/wp-includes/js/dist/script-modules/block-library/image/v...	14400.0 s	1.8 KiB

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/wp-content/themes/bthree/assets/fonts/Inter-VariableFont...	55 ms
www.blender.org/wp-content/themes/bthree/assets/fonts/fontutti.woff2?4c873d21	40 ms

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
Geometry Nodes Workshop: September 2025 `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/wp-content/uploads/2025/10/geometry_workshop_september_2...	123.9 KiB	110.7 KiB
Connecting Blender Community `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/blender_today_pablo.jpg	82.6 KiB	60.9 KiB
Volume Grids in Geometry Nodes `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	code.blender.org/wp-content/uploads/2025/10/volume_grids_thumbnail-480x270.png	64.9 KiB	51.7 KiB
The demo scene is back with Nodevember `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/nodevember.jpg	67.0 KiB	44.3 KiB
10 Years Since Caminandes Llamigos `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/92/ec/92ecaa98d33bb2b10e12051e2e6...	54.7 KiB	41.4 KiB
Updated Fundamentals Training `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/c9/f4/c9f4a37cd2911fb079a563440d3...	50.9 KiB	37.6 KiB
Scaling Render Power with Flamenco Orchestra `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/b9/0c/b90c5f218ca21f9a7465298fb3d...	45.3 KiB	32.1 KiB
Showcasing Blender at industry events `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/daniel_martinez_lara_annecy.jpg	53.1 KiB	30.5 KiB
Creating Worlds at BCON19 `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/creating_worlds_ian_hubert.jpg	45.5 KiB	25.7 KiB
Development Fund `div.wp-block-columns > div.wp-block-column > figure.wp-block-image > img.wp-image-77816`	www.blender.org/wp-content/uploads/2021/08/blender_fund_hex-e1629996297522.png	23.5 KiB	19.7 KiB
Course: Facial Rigging now online! `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/c9/b9/c9b990e4614c068ed156d41de68...	27.3 KiB	17.7 KiB
Khronos `div.wp-block-column > figure.wp-block-image > a > img.wp-image-78389`	www.blender.org/wp-content/uploads/2021/10/khronos.png	12.4 KiB	10.8 KiB
Linux Foundation `div.wp-block-column > figure.wp-block-image > a > img.wp-image-78390`	www.blender.org/wp-content/uploads/2021/10/linux_foundation.png	10.6 KiB	8.9 KiB
Winter of Quality 2026 `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	code.blender.org/wp-content/uploads/2026/02/winter_quality_2026-480x270.jpg	13.9 KiB	5.2 KiB
Google Summer of Code 2025 Results `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	code.blender.org/wp-content/uploads/2025/10/gsoc_2025-480x270.jpg	13.3 KiB	5.0 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-15-DIV

nodeLabel: body.ps-homepage > div.container-main > div.hero > div.hero-bg

path: 1,HTML,1,BODY,0,DIV,2,DIV,1,DIV

selector: body.ps-homepage > div.container-main > div.hero > div.hero-bg

snippet: <div class="hero-bg" style="background-image: url("https://www.blender.org/wp-content/uploads/2026/03/b…");">

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
www.blender.org/wp-content/themes/bthree/style.css?x34959	79.7 KiB	450 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 824 ms

URL	Time Spent
blender.org/	824 ms
www.blender.org/	0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 15.0 KiB

URL	Transfer Size	Est Savings
www.blender.org/wp-content/themes/bthree/style.css?x34959	79.7 KiB	15.0 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 450 ms 72.5 KiB

URL	Transfer Size	Est Savings
www.blender.org/wp-content/themes/bthree/style.css?x34959	79.6 KiB	72.5 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.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 150 ms 33.7 KiB

URL	Transfer Size	Est Savings
www.blender.org/wp-content/themes/bthree/assets/js/generated/tutti.min.js?x34959	46.1 KiB	33.7 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
/wp-content/themes/bthree/assets/fonts/Inter-VariableFont...	412.3 KiB
www.blender.org/wp-content/uploads/2026/02/brc_poster_clean.jpg	220.7 KiB
www.blender.org/wp-content/uploads/2026/03/blender_51_artwork_cropped.webp	176.3 KiB
www.blender.org/wp-content/uploads/2019/07/animation01-1280x720.jpg?x12104	150.5 KiB
www.blender.org/wp-content/uploads/2026/01/bcon_austin_2026.png	149.9 KiB
www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104	140.2 KiB
www.blender.org/wp-content/uploads/2019/07/blender_vfx-1280x720.jpg?x12104	136.5 KiB
www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104	135.9 KiB
/wp-content/uploads/2019/07/hero_p31_screenshot-1280x720....	133.5 KiB
/wp-content/uploads/2025/10/geometry_workshop_september_2...	124.1 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
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/blender_vfx-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/animation01-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	/wp-content/uploads/2019/07/hero_p31_screenshot-1280x720....
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/vse_custom_grade-1280x720.jpg?x12104

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

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Max Potential First Input Delay 30 ms

●Minify JavaScript

●JavaScript execution time 0.2 s

●Minimizes main-thread work 1.1 s

●Avoid long main-thread tasks 2 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 60 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 70 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Blender Foundation `section > ul > li > a`
Blender Institute `section > ul > li > a`
Blender Studio `section > ul > li > a`
License `section > ul > li > a`
Logo & Trademark `section > ul > li > a`
Credits `section > ul > li > a`
Privacy Policy `section > ul > li > a`
Code of Conduct `section > ul > li > a`
People `section > ul > li > a`
Jobs `section > ul > li > a`
Latest Blender `section > ul > li > a`
Blender LTS `section > ul > li > a`
Previous Versions `section > ul > li > a`
Experimental Builds `section > ul > li > a`
Source Code `section > ul > li > a`
Requirements `section > ul > li > a`
Benchmark `section > ul > li > a`
Flamenco `section > ul > li > a`
Add-ons `section > ul > li > a`
Themes `section > ul > li > a`
Get Started `section > ul > li > a`
Projects `section > ul > li > a`
Docs `section > ul > li > a`
Blog `section > ul > li > a`
Forum `section > ul > li > a`
YouTube `section > ul > li > a`
Python API `section > ul > li > a`
Films `section > ul > li > a`
Training `section > ul > li > a`
Tools & Pipeline `section > ul > li > a`
Manual `section > ul > li > a`
Community `section > ul > li > a`
FAQ `section > ul > li > a`
Documentation `section > ul > li > a`
Education `section > ul > li > a`
Press Releases `section > ul > li > a`
User Stories `section > ul > li > a`
One-time Donation `section > ul > li > a.text-center`
Artistic freedom starts with Blender The Free and Open Source 3D Creation Suite `body.ps-homepage > footer.footer-note`
The Free and Open Source 3D Creation Suite `body.ps-homepage > footer.footer-note > span`

These are opportunities to improve the legibility of your content.

Names and labels

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
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > 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.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
About `div.row > div.col-6 > section > a.sitemap-title`
Blender Foundation `section > ul > li > a`
Blender Institute `section > ul > li > a`
Blender Studio `section > ul > li > a`
License `section > ul > li > a`
Logo & Trademark `section > ul > li > a`
Credits `section > ul > li > a`
Privacy Policy `section > ul > li > a`
Code of Conduct `section > ul > li > a`
People `section > ul > li > a`
Jobs `section > ul > li > a`
Blender Network `div.container > div.row > div.col-6 > a.sitemap-title`
Download `div.row > div.col-6 > section > a.sitemap-title`
Latest Blender `section > ul > li > a`
Blender LTS `section > ul > li > a`
Previous Versions `section > ul > li > a`
Experimental Builds `section > ul > li > a`
Source Code `section > ul > li > a`
Requirements `section > ul > li > a`
Benchmark `section > ul > li > a`
Flamenco `section > ul > li > a`
Extensions `div.row > div.col-6 > section > a.sitemap-title`
Add-ons `section > ul > li > a`
Themes `section > ul > li > a`
Developers `div.row > div.col-6 > section > a.sitemap-title`
Get Started `section > ul > li > a`
Projects `section > ul > li > a`
Docs `section > ul > li > a`
Blog `section > ul > li > a`
Forum `section > ul > li > a`
YouTube `section > ul > li > a`
Python API `section > ul > li > a`
Blender Studio `div.row > div.col-6 > section > a.sitemap-title`
Films `section > ul > li > a`
Training `section > ul > li > a`
Tools & Pipeline `section > ul > li > a`
Support `div.row > div.col-6 > section > a.sitemap-title`
Manual `section > ul > li > a`
Community `section > ul > li > a`
FAQ `section > ul > li > a`
Get Involved `div.row > div.col-6 > section > a.sitemap-title`
Documentation `section > ul > li > a`
Education `section > ul > li > a`
News `div.row > div.col-6 > section > a.sitemap-title`
Press Releases `section > ul > li > a`
User Stories `section > ul > li > a`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

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

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

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

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

●Buttons have an accessible name

●`[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

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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

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

●Links are distinguishable without relying on color.

●Links have a discernible name

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

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

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

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

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○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

○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 an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

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

○Form elements have associated labels

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

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

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○Elements with visible text labels have matching accessible names.

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

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

100

Best Practices

●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 browser errors logged to the console

●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 DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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.blender.org/about/license/	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
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`

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

○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

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

100

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

679 ms

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

2.48 s

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

0 ms

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

0.035

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

825 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.53 s

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.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/wp-content/themes/bthree/assets/fonts/Inter-VariableFont...	14400.0 s	412.3 KiB
www.blender.org/wp-content/uploads/2026/02/brc_poster_clean.jpg	14400.0 s	220.7 KiB
www.blender.org/wp-content/uploads/2026/03/blender_51_artwork_cropped.webp	14400.0 s	176.3 KiB
www.blender.org/wp-content/uploads/2020/11/bcon20_todos-1280x585.jpg	14400.0 s	158.4 KiB
www.blender.org/wp-content/uploads/2019/07/animation01-1280x720.jpg?x12104	14400.0 s	150.5 KiB
www.blender.org/wp-content/uploads/2026/01/bcon_austin_2026.png	14400.0 s	149.9 KiB
www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104	14400.0 s	140.1 KiB
www.blender.org/wp-content/uploads/2019/07/blender_vfx-1280x720.jpg?x12104	14400.0 s	136.5 KiB
www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104	14400.0 s	135.9 KiB
/wp-content/uploads/2019/07/hero_p31_screenshot-1280x720....	14400.0 s	133.6 KiB
/wp-content/uploads/2025/10/geometry_workshop_september_2...	14400.0 s	124.1 KiB
www.blender.org/wp-content/uploads/2019/07/vse_custom_grade-1280x720.jpg?x12104	14400.0 s	105.0 KiB
www.blender.org/wp-content/uploads/2021/10/blender_today_pablo.jpg	14400.0 s	82.5 KiB
www.blender.org/wp-content/themes/bthree/style.css?x34959	14400.0 s	79.7 KiB
www.blender.org/wp-content/uploads/2021/10/nodevember.jpg	14400.0 s	66.8 KiB
code.blender.org/wp-content/uploads/2025/10/volume_grids_thumbnail-480x270.png	14400.0 s	65.1 KiB
www.blender.org/wp-content/uploads/2021/10/daniel_martinez_lara_annecy.jpg	14400.0 s	52.9 KiB
www.blender.org/wp-content/themes/bthree/assets/js/generated/tutti.min.js?x34959	14400.0 s	46.2 KiB
www.blender.org/wp-content/uploads/2021/10/creating_worlds_ian_hubert.jpg	14400.0 s	45.4 KiB
www.blender.org/wp-content/themes/bthree/assets/fonts/fontutti.woff2?4c873d21	14400.0 s	28.1 KiB
www.blender.org/wp-content/uploads/2021/10/open_invention_network.png	14400.0 s	25.3 KiB
www.blender.org/wp-content/uploads/2021/08/blender_fund_hex-e1629996297522.png	14400.0 s	23.5 KiB
www.blender.org/wp-content/uploads/2021/10/academy_software_foundation.png	14400.0 s	15.3 KiB
/wp-includes/js/dist/script-modules/interactivity/index.m...	14400.0 s	14.8 KiB
/wp-includes/js/dist/script-modules/interactivity/index.m...	14400.0 s	14.7 KiB
code.blender.org/wp-content/uploads/2026/02/winter_quality_2026-480x270.jpg	14400.0 s	14.0 KiB
code.blender.org/wp-content/uploads/2025/10/gsoc_2025-480x270.jpg	14400.0 s	13.4 KiB
www.blender.org/wp-content/uploads/2021/10/khronos.png	14400.0 s	12.5 KiB
www.blender.org/wp-content/uploads/2021/10/linux_foundation.png	14400.0 s	10.6 KiB
/files/public/thumbnail/92/ec/92ecaa98d33bb2b10e12051e2e6...	1728000.0 s	54.8 KiB
/files/public/thumbnail/c9/f4/c9f4a37cd2911fb079a563440d3...	1728000.0 s	51.0 KiB
/files/public/thumbnail/b9/0c/b90c5f218ca21f9a7465298fb3d...	1728000.0 s	45.5 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
www.blender.org/wp-includes/js/wp-emoji-release.min.js?ver=6.9.4	14400.0 s	5.3 KiB
analytics.blender.org/js/pa-U2drbvocUhlojMlK4BOLL.js	60.0 s	2.7 KiB
/files/public/thumbnail/c9/b9/c9b990e4614c068ed156d41de68...	1728000.0 s	27.7 KiB
/wp-includes/js/dist/script-modules/block-library/image/v...	14400.0 s	1.9 KiB

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/wp-content/themes/bthree/assets/fonts/Inter-VariableFont...	40 ms
www.blender.org/wp-content/themes/bthree/assets/fonts/fontutti.woff2?4c873d21	25 ms

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
Geometry Nodes Workshop: September 2025 `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/wp-content/uploads/2025/10/geometry_workshop_september_2...	123.9 KiB	117.1 KiB
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104	144.1 KiB	114.0 KiB
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104	145.9 KiB	110.5 KiB
Connecting Blender Community `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/blender_today_pablo.jpg	82.6 KiB	68.2 KiB
Volume Grids in Geometry Nodes `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	code.blender.org/wp-content/uploads/2025/10/volume_grids_thumbnail-480x270.png	64.9 KiB	58.1 KiB
The demo scene is back with Nodevember `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/nodevember.jpg	67.0 KiB	52.0 KiB
article#post-78387 > div.entry-content > div.wp-block-cover > img.wp-block-cover__image-background `article#post-78387 > div.entry-content > div.wp-block-cover > img.wp-block-cover__image-background`	www.blender.org/wp-content/uploads/2020/11/bcon20_todos-1280x585.jpg	158.3 KiB	48.9 KiB
10 Years Since Caminandes Llamigos `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/92/ec/92ecaa98d33bb2b10e12051e2e6...	54.7 KiB	47.9 KiB
Updated Fundamentals Training `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/c9/f4/c9f4a37cd2911fb079a563440d3...	50.9 KiB	44.1 KiB
Scaling Render Power with Flamenco Orchestra `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/b9/0c/b90c5f218ca21f9a7465298fb3d...	45.3 KiB	38.5 KiB
Showcasing Blender at industry events `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/daniel_martinez_lara_annecy.jpg	53.1 KiB	38.1 KiB
Creating Worlds at BCON19 `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	www.blender.org/wp-content/uploads/2021/10/creating_worlds_ian_hubert.jpg	45.5 KiB	32.4 KiB
Open Invention Network `div.wp-block-column > figure.wp-block-image > a > img.wp-image-78391`	www.blender.org/wp-content/uploads/2021/10/open_invention_network.png	27.6 KiB	23.3 KiB
Course: Facial Rigging now online! `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	/files/public/thumbnail/c9/b9/c9b990e4614c068ed156d41de68...	27.3 KiB	22.4 KiB
Development Fund `div.wp-block-columns > div.wp-block-column > figure.wp-block-image > img.wp-image-77816`	www.blender.org/wp-content/uploads/2021/08/blender_fund_hex-e1629996297522.png	23.5 KiB	19.7 KiB
Academy Software Foundation `div.wp-block-column > figure.wp-block-image > a > img.wp-image-78388`	www.blender.org/wp-content/uploads/2021/10/academy_software_foundation.png	15.3 KiB	13.8 KiB
Khronos `div.wp-block-column > figure.wp-block-image > a > img.wp-image-78389`	www.blender.org/wp-content/uploads/2021/10/khronos.png	12.4 KiB	10.8 KiB
Winter of Quality 2026 `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	code.blender.org/wp-content/uploads/2026/02/winter_quality_2026-480x270.jpg	13.9 KiB	9.4 KiB
Google Summer of Code 2025 Results `div.cards-item > div.cards-item-content > a.cards-item-thumbnail > img`	code.blender.org/wp-content/uploads/2025/10/gsoc_2025-480x270.jpg	13.3 KiB	9.0 KiB
Linux Foundation `div.wp-block-column > figure.wp-block-image > a > img.wp-image-78390`	www.blender.org/wp-content/uploads/2021/10/linux_foundation.png	10.6 KiB	8.9 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-20-DIV

nodeLabel: body.ps-homepage > div.container-main > div.hero > div.hero-bg

path: 1,HTML,1,BODY,0,DIV,2,DIV,1,DIV

selector: body.ps-homepage > div.container-main > div.hero > div.hero-bg

snippet: <div class="hero-bg" style="background-image: url("https://www.blender.org/wp-content/uploads/2026/03/b…");">

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.

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

value: No additional origins are good candidates for preconnecting

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
www.blender.org/wp-content/themes/bthree/style.css?x34959	79.7 KiB	80 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 331 ms

URL	Time Spent
blender.org/	331 ms
www.blender.org/	0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 30 ms 15.0 KiB

URL	Transfer Size	Est Savings
www.blender.org/wp-content/themes/bthree/style.css?x34959	79.7 KiB	15.0 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 80 ms 72.2 KiB

URL	Transfer Size	Est Savings
www.blender.org/wp-content/themes/bthree/style.css?x34959	79.6 KiB	72.2 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.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 30 ms 33.7 KiB

URL	Transfer Size	Est Savings
www.blender.org/wp-content/themes/bthree/assets/js/generated/tutti.min.js?x34959	46.1 KiB	33.7 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
/wp-content/themes/bthree/assets/fonts/Inter-VariableFont...	412.3 KiB
www.blender.org/wp-content/uploads/2026/02/brc_poster_clean.jpg	220.7 KiB
www.blender.org/wp-content/uploads/2026/03/blender_51_artwork_cropped.webp	176.3 KiB
www.blender.org/wp-content/uploads/2020/11/bcon20_todos-1280x585.jpg	158.4 KiB
www.blender.org/wp-content/uploads/2019/07/animation01-1280x720.jpg?x12104	150.5 KiB
www.blender.org/wp-content/uploads/2026/01/bcon_austin_2026.png	149.9 KiB
www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104	140.1 KiB
www.blender.org/wp-content/uploads/2019/07/blender_vfx-1280x720.jpg?x12104	136.5 KiB
www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104	135.9 KiB
/wp-content/uploads/2019/07/hero_p31_screenshot-1280x720....	133.6 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
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/blender_render-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/modeling02-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/blender_vfx-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/animation01-1280x720.jpg?x12104
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	/wp-content/uploads/2019/07/hero_p31_screenshot-1280x720....
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`	www.blender.org/wp-content/uploads/2019/07/vse_custom_grade-1280x720.jpg?x12104

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

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Max Potential First Input Delay 20 ms

●Minify JavaScript

●JavaScript execution time 0.0 s

●Minimizes main-thread work 0.3 s

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 100 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 60 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○User Timing marks and measures

○Avoid long main-thread tasks

○Avoid non-composited animations

Accessibility

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
Blender Foundation `section > ul > li > a`
Blender Institute `section > ul > li > a`
Blender Studio `section > ul > li > a`
License `section > ul > li > a`
Logo & Trademark `section > ul > li > a`
Credits `section > ul > li > a`
Privacy Policy `section > ul > li > a`
Code of Conduct `section > ul > li > a`
People `section > ul > li > a`
Jobs `section > ul > li > a`
Latest Blender `section > ul > li > a`
Blender LTS `section > ul > li > a`
Previous Versions `section > ul > li > a`
Experimental Builds `section > ul > li > a`
Source Code `section > ul > li > a`
Requirements `section > ul > li > a`
Benchmark `section > ul > li > a`
Flamenco `section > ul > li > a`
Add-ons `section > ul > li > a`
Themes `section > ul > li > a`
Get Started `section > ul > li > a`
Projects `section > ul > li > a`
Docs `section > ul > li > a`
Blog `section > ul > li > a`
Forum `section > ul > li > a`
YouTube `section > ul > li > a`
Python API `section > ul > li > a`
Films `section > ul > li > a`
Training `section > ul > li > a`
Tools & Pipeline `section > ul > li > a`
Manual `section > ul > li > a`
Community `section > ul > li > a`
FAQ `section > ul > li > a`
Documentation `section > ul > li > a`
Education `section > ul > li > a`
Press Releases `section > ul > li > a`
User Stories `section > ul > li > a`
One-time Donation `section > ul > li > a.text-center`
Artistic freedom starts with Blender The Free and Open Source 3D Creation Suite `body.ps-homepage > footer.footer-note`
The Free and Open Source 3D Creation Suite `body.ps-homepage > footer.footer-note > span`

These are opportunities to improve the legibility of your content.

Names and labels

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
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > 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.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

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

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

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

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

●Buttons have an accessible name

●`[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

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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

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

●Links are distinguishable without relying on color.

●Links have a discernible name

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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

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

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○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

○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 an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

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

○Form elements have associated labels

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

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

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○Elements with visible text labels have matching accessible names.

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

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

100

Best Practices

●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 browser errors logged to the console

●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 DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

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.blender.org/about/license/	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
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`
ul.page-card-list > li.feature-item > div.feature-image > img `ul.page-card-list > li.feature-item > div.feature-image > img`

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

○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

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

Results for https://blender.org

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (1)

Trust (2)

Content (1)

Navigation (2)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Payback period

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Names and labels

Best practices

Best Practices

SEO

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Names and labels

Best practices

Best Practices

SEO

Content Best Practices

Keyboard Shortcuts