Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

100

Best Practices

100

SEO

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

1.32 s

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

5.02 s

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

42 ms

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

0.003

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

1.81 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.

5.18 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 PASS 6 REVIEW

Third-Party Impact

46% third-party, 0 ms blocking

REVIEW

46% third-party, 0 ms blocking

Third-party code accounts for 46% of page weight (287.7 KiB of 620.6 KiB)

Third-party blocking time is low (0 ms)

54%

46%

First-party Third-party

JS Execution Cost

Action

1267ms total JS execution

REVIEW

1267ms total JS execution

https://tmsarl.netlify.app/: 825ms CPU time

Unattributable: 228ms CPU time

https://tmsarl.netlify.app/.netlify/scripts/hud?va...: 214ms CPU time

Main Thread Breakdown

Style & Layout 46% Other 29% Rendering 12% Script Evaluation 6% Parse HTML & CSS 6%

Script	Total	Scripting	Parse/Compile	Party
https://tmsarl.netlify.app/	825ms	14ms	1ms	1st
Unattributable	228ms	6ms	0ms	1st
https://tmsarl.netlify.app/.netlify/scripts/hud?variant=public	214ms	40ms	5ms	1st

HTTP/3 (QUIC)

HTTP/3 not advertised

REVIEW

HTTP/3 not advertised

HTTP/3 (QUIC) is not advertised

HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.

Main HTML Cache-Control

Action

Main HTML max-age=31536000 (~525600min) is aggressive

REVIEW

Main HTML max-age=31536000 (~525600min) is aggressive

Main HTML cached for 525600 minutes -- risks stale auth / SPA state

Long max-age on the main HTML document means users may see outdated auth state, SPA shells, or A/B variants until the cache expires. Consider Cache-Control: no-cache (or max-age=300) for HTML and let your hashed assets (JS/CSS/images) carry the long cache instead.

Got: public,max-age=31536000,immutable

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

Page Weight Budget

621 KB transferred, 20 requests

PASS

621 KB transferred, 20 requests

Page weighs 926 KB (621 KB transferred)

Fonts are 271 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 271 KB

20 HTTP requests

Estimated 0.13 g CO2 per page load

621 KB transferred

20 requests

0.13 g CO2 per page load

Images 273.4 KiB 44%

Fonts 271.1 KiB 44%

JavaScript 29.7 KiB 5%

CSS 16.6 KiB 3%

HTML 15.0 KiB 2%

Other 14.9 KiB 2%

0 2.4 MB 4.9 MB

Under budget

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Image Optimization

7 images, 0 KB saveable

PASS

7 images, 0 KB saveable

All images are well-optimized

7 images 273 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

Font Loading

4 fonts (271 KB)

PASS

4 fonts (271 KB)

4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

271 KB total

Render-blocking

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

remixicon.woff2 woff2 swap

Size 173 KB

Load time 116 ms

Start 321 ms

Risk FOUT — text flashes from fallback to web font

Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need

FwZY7-Qmy14u9lezJ-6H6Mm... woff2 swap

Size 22 KB

Load time 82 ms

Start 388 ms

Risk FOUT — text flashes from fallback to web font

UcC73FwrK3iLTeHuS_nVMrM... woff2 swap

Size 47 KB

Load time 88 ms

Start 389 ms

Risk FOUT — text flashes from fallback to web font

gyByhwUxId8gMEwcGFWNOIT... woff2 swap

Size 29 KB

Load time 87 ms

Start 389 ms

Risk FOUT — text flashes from fallback to web font

Optimization checklist

Preload critical fonts (priority=high)
Use woff2 format for all fonts
Set font-display to swap, optional, or fallback
Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~87 KB and ~174 ms

JS Bundles

5 scripts, 0 KB unused

PASS

5 scripts, 0 KB unused

https://tmsarl.netlify.app/js/i18n.js: unminified — 3 KB could be saved

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://tmsarl.netlify.app/js/i18n.js	16 KB	—	✗	1st
https://tmsarl.netlify.app/js/main.js	2 KB	—	✓	1st
https://tmsarl.netlify.app/js/contact.js	1 KB	—	✓	1st
https://tmsarl.netlify.app/js/animations.js	1 KB	—	✓	1st
https://tmsarl.netlify.app/.netlify/scripts/hud?variant=public	10 KB	—	✓	1st

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

3 hints, 0 missing preconnects

PASS

3 hints, 0 missing preconnects

Page uses 3 resource hint(s)

Current Resource Hints

preconnect

preload

—

dns-prefetch

—

prefetch

—

3 resource hints configured

A+

Document Compression

Document response uses brotli

PASS

Document response uses brotli

Main HTML response uses brotli (Content-Encoding: br)

Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Server Response Intelligence

3 server-response signal(s) detected

PASS

3 server-response signal(s) detected

`Cache-Status` header present (RFC 9211): "Netlify Edge"; fwd=miss; fwd-status=200; stored

The page returns a `Cache-Status` header -- the standardized way for CDNs and caches to communicate per-hop cache state to debugging tools. Format: `Cache-Status: cdn-name; hit; ttl=300` (or `; fwd=miss` / `; fwd=stale`). Standard alternative to vendor-specific `X-Cache` patterns each CDN had historically. Cloudflare, Fastly, and Akamai all support emitting it.

`Vary` header declared: Accept-Encoding

The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).

`ETag` present -- conditional GET supported

Page Weight Inventory

20 resources · 621 KB · 0 KB savings available

PASS

20 resources · 621 KB · 0 KB savings available

Within 1MB page-weight target

Got: 621 KB

7 third-party resources (46% of weight)

20 resources · 620.6 KiB · 7 third-party Within 1MB page-weight target

Image 46% · 288.3 KiB

Font 44% · 271.1 KiB

JavaScript 5% · 29.7 KiB

CSS 3% · 16.6 KiB

Document 2% · 15.0 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

20 resources			620.6 KiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

A+

JavaScript Blocking

No render-blocking JS or document.write usage detected

PASS

No render-blocking JS or document.write usage detected

No JavaScript blocking issues detected

A+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues detected

A+

HTTP Caching

max-age=31536000 (52 weeks)

PASS

max-age=31536000 (52 weeks)

Cache-Control header is set

Got: public,max-age=31536000,immutable

Effective TTL: 52 weeks (max-age=31536000)

ETag present — enables conditional (304) responses

Cache-Control

public,max-age=31536000,immutable

Directive	Value	Meaning
public	—	Any cache may store this response
max-age	31536000	Cache for 52 weeks
immutable	—	Content will never change

Effective TTL: 31536000 seconds

Asset Compression

No text asset hosts to measure

INFO

No text asset hosts to measure

No third-party or subdomain host served enough text assets to measure

Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.

Network Waterfall

20 requests over 756ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

15 images, 39 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

39 KB

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