Performance

· 15 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

Best Practices

SEO

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

686 ms

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

951 ms

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.

0.025

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

1.97 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.

951 ms

Page Load Progression

3.0 s

6.0 s

9.1 s

12.1 s

15.1 s

18.1 s

21.1 s

24.1 s

Checks

6 PASS 3 REVIEW 4 FIX

Page Weight Budget

Action

5.0 MB transferred, 89 requests

FIX

5.0 MB transferred, 89 requests

Page weighs 6.4 MB (5.0 MB transferred)

Images are 3.8 MB — compress or use modern formats

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Got: 3.8 MB

Fonts are 392 KB — consider subsetting or using system fonts

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

Got: 392 KB

89 HTTP requests

Estimated 1.0 g CO2 per page load

5.0 MB transferred

89 requests

1.0 g CO2 per page load

Images 3.8 MiB 75%

Other 540.7 KiB 11%

Fonts 392.0 KiB 8%

JavaScript 276.5 KiB 5%

HTML 33.2 KiB 1%

CSS 32.2 KiB 1%

Other 1.8 KiB 0%

Other 111 B 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

Third-Party Impact

Action

76% third-party, 0 ms blocking

FIX

76% third-party, 0 ms blocking

Third-party code accounts for 76% of page weight (3.8 MiB of 5.0 MiB)

Third-party blocking time is low (0 ms)

24%

76%

First-party Third-party

JS Execution Cost

Action

6982ms total JS execution

FIX

6982ms total JS execution

https://mez.ink/: 5365ms CPU time

https://mez.ink/mezink-web/_next/static/chunks/211...: 684ms CPU time

Unattributable: 433ms CPU time

https://mez.ink/mezink-web/_next/static/chunks/fd9...: 212ms CPU time

https://mez.ink/mezink-web/_next/static/chunks/838...: 172ms CPU time

Third-party scripts: 483ms (7% of total)

Main Thread Breakdown

Other 43% Style & Layout 23% Rendering 20% Script Evaluation 12%

Script	Total	Scripting	Parse/Compile	Party
https://mez.ink/	5365ms	21ms	7ms	1st
https://mez.ink/mezink-web/_next/static/chunks/2117-78579c6a0d6a0dcd.js	684ms	618ms	5ms	1st
Unattributable	433ms	4ms	0ms	3rd
https://mez.ink/mezink-web/_next/static/chunks/fd9d1056-70763ffa71ed5324.js	212ms	52ms	7ms	1st
https://mez.ink/mezink-web/_next/static/chunks/8382-9e4434d0c17bb1b2.js	172ms	43ms	13ms	1st
https://mez.ink/mezink-web/_next/static/chunks/webpack-ffb7e7628afde9c1.js	65ms	61ms	0ms	1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516	50ms	28ms	1ms	3rd

Page Weight Inventory

Action

89 resources · 5.0 MB · 68 KB savings available

FIX

89 resources · 5.0 MB · 68 KB savings available

Page weight 4.0 MB over 1MB target

Got: 5.0 MB Expected: ≤ 1 MB

~68 KB of savings available

21 third-party resources (76% of weight)

6 resources over 200KB

89 resources · 5.0 MiB · 21 third-party 4.0 MiB over 1MB target

Image 75% · 3.8 MiB

Other 11% · 539.3 KiB

Font 8% · 392.0 KiB

JavaScript 5% · 276.5 KiB

Document 1% · 34.7 KiB

CSS 1% · 32.2 KiB

~68.1 KiB of savings available

Remove unused JavaScript: 68.1 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

89 resources			5.0 MiB

Image Optimization

44 images, 0 KB saveable

REVIEW

44 images, 0 KB saveable

All images are well-optimized

44 images 3.7 MB

0 oversized -0 KB

6 legacy format

0 missing dimensions CLS risk

JS Bundles

13 scripts, 68 KB unused

REVIEW

13 scripts, 68 KB unused

https://mez.ink/mezink-web/_next/static/chunks/838...: 68 KB unused (51%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 68 KB

68 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://mez.ink/mezink-web/_next/static/chunks/8382-9e4434d0c17bb1b2.js	133 KB	68 KB (51%)	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/3608-e939ad10a106a160.js	10 KB	—	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/2117-78579c6a0d6a0dcd.js	37 KB	—	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/main-app-67ac5cd507b9ed38.js	0 KB	—	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/fd9d1056-70763ffa71ed5324.js	53 KB	—	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/9467-01744062861e4771.js	7 KB	—	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/webpack-ffb7e7628afde9c1.js	5 KB	—	✓	1st
https://mez.ink/mezink-web/_next/static/chunks/app/page-a6d8659715e08965.js	13 KB	—	✓	1st
https://mez.ink/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js	1 KB	—	✓	1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516	11 KB	—	✓	3rd

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

HTTP Caching

s-maxage=31536000, stale-while-revalidate

REVIEW

s-maxage=31536000, stale-while-revalidate

Cache-Control header is set

Got: s-maxage=31536000, stale-while-revalidate

CDN TTL: 52 weeks (s-maxage=31536000)

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

s-maxage=31536000, stale-while-revalidate

Directive	Value	Meaning
s-maxage	31536000	CDN caches for 52 weeks
stale-while-revalidate	—	Serve stale while revalidating

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

2 fonts (392 KB)

PASS

2 fonts (392 KB)

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

Web fonts

392 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

e4af272ccee01ff0-s.p.woff2 woff2 swap

Size 47 KB

Load time 28 ms

Start 423 ms

Risk FOUT — text flashes from fallback to web font

InterVariable.woff2 woff2 swap

Size 345 KB

Load time 1.9 s

Start 547 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

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 ~172 KB and ~344 ms

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

No optimization needed

PASS

No optimization needed

No resource hint issues

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

89 requests over 33232ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

7% of JavaScript execution is third-party

First-party Third-party 483ms · 11KB · €5/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	433ms	0 KB	—	€5/mo	Costly
static.cloudflareinsights.com static.cloudflareinsights.com	Other	50ms	11 KB	—	€1/mo	Optional

Unattributable

Other

Costly

Execution 433ms

Transfer 0 KB

Monthly Cost €5/mo

static.cloudflareinsights.com

Other

Optional

Execution 50ms

Transfer 11 KB

Monthly Cost €1/mo

These scripts may cost more than they're worth

Unattributable adds 433ms and costs ~€5/month

Unattributable takes 433ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

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.

Browse & Analyze

Learn

Performance

Page Load Progression

Font loading timeline

Optimization checklist

Green Hosting

These scripts may cost more than they're worth