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https://matrix.to

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
0
REVIEW
1
PASS
14
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
100
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
67
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

1.18 s

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

1.18 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.

0.001

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

1.18 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.

1.18 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
14 PASS 1 REVIEW
B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
64 KB transferred, 6 requests
PASS
64 KB transferred, 6 requests
Info::
Page weighs 196 KB (64 KB transferred)
Info::
6 HTTP requests
Info::
Estimated 0.01 g CO2 per page load
64 KB / 2.4 MB budget
64 KB transferred
6 requests
0.01 g CO2 per page load
JavaScript 55.2 KiB 86%
Images 3.8 KiB 6%
CSS 3.0 KiB 5%
HTML 1.1 KiB 2%
Other 1.0 KiB 2%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-party.
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A
Image Optimization
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Warning::
https://matrix.to/images/matrix-logo-3303998978.sv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 4 KB
0 oversized -0 KB
2 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

A+
JS Execution Cost
251ms total JS execution
PASS
251ms total JS execution
Info::
https://matrix.to/bundle-4193300336.js: 93ms CPU time
Info::
https://matrix.to/: 80ms CPU time
Info::
Unattributable: 78ms CPU time
Info::
Third-party scripts: 78ms (31% of total)

Main Thread Breakdown

Script Evaluation 38% Other 37% Style & Layout 14% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://matrix.to/bundle-4193300336.js93ms75ms17ms1st
https://matrix.to/80ms18ms1ms1st
Unattributable78ms4ms0ms3rd
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+
JS Bundles
1 scripts, 35 KB unused
PASS
1 scripts, 35 KB unused
Warning::
https://matrix.to/bundle-4193300336.js: 35 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 35 KB
35 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://matrix.to/bundle-4193300336.js55 KB35 KB (63%)✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Page Weight Inventory
6 resources · 64 KB · 35 KB savings available
PASS
6 resources · 64 KB · 35 KB savings available
Info::
Within 1MB page-weight target
Got: 64 KB
6 resources · 64.1 KiB · 0 third-party Within 1MB page-weight target
JavaScript 86% · 55.2 KiB
Image 6% · 3.8 KiB
CSS 5% · 3.0 KiB
Document 3% · 2.1 KiB

~34.6 KiB of savings available

Remove unused JavaScript: 34.6 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
6 requests over 287ms
INFO
0 ms 500 ms 1.0 s FCP 1.2 s LCP 1.2 shttps://matrix.to// https://matrix.to/ — 200 — 1.1 KiB — 113 ms — h2https://matrix.to/bundle-404453117.css/bundle-404453117.css https://matrix.to/bundle-404453117.css — 200 — 3.0 KiB — 35 ms — h2https://matrix.to/bundle-4193300336.js/bundle-4193300336.js https://matrix.to/bundle-4193300336.js — 200 — 55.2 KiB — 38 ms — h2https://matrix.to/images/matrix-logo-3303998978.svg/images/matrix-logo-3303998978.svg https://matrix.to/images/matrix-logo-3303998978.svg — 200 — 3.0 KiB — 42 ms — h3https://matrix.to/images/link-3835920055.svg/images/link-3835920055.svg https://matrix.to/images/link-3835920055.svg — 200 — 854 B — 52 ms — h3https://matrix.to/favicon.ico/favicon.ico https://matrix.to/favicon.ico — 200 — 1.0 KiB — 31 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
31% of JavaScript execution is third-party
First-party Third-party 78ms · 0KB · $1/mo
Unattributable
Other
Optional
Execution 78ms
Transfer 0 KB
Monthly Cost $1/mo

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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