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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
55
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

2.47 s

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

10.39 s

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

653 ms

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

0.040

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

2.90 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.

11.03 s

Page Load Progression

479 ms
958 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.4 s
3.8 s
Checks
16
8 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
4.5 MB transferred, 148 requests
FIX
4.5 MB transferred, 148 requests
Critical::
Page weighs 7.8 MB (4.5 MB transferred)
Warning::
JavaScript is 672 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 672 KB
Info::
Fonts are 347 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 347 KB
Warning::
148 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.94 g CO2 per page load
4.5 MB / 2.4 MB budget
4.5 MB transferred
148 requests
0.94 g CO2 per page load
Other 2.7 MiB 61%
JavaScript 671.7 KiB 15%
Images 526.5 KiB 12%
Fonts 346.7 KiB 8%
HTML 185.1 KiB 4%
Other 34.8 KiB 1%
Other 2.6 KiB 0%
Other 1.9 KiB 0%
CSS 1.6 KiB 0%
Other 1.3 KiB 0%
Other 184 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (4.5 MiB of 4.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5300ms total JS execution
FIX
5300ms total JS execution
Warning::
Unattributable: 1964ms CPU time
Warning::
https://bunny.net/: 1841ms CPU time
Warning::
https://bunny.net/framework-5c94f8705ee981d74e43.j...: 771ms CPU time
Warning::
https://bunny.net/f1360e94e2e30dbeea7e60c04ed0f3bb...: 312ms CPU time
Warning::
https://posthog2.fluffleinfra.net/static/array.js: 255ms CPU time
Warning::
Third-party scripts: 5300ms (100% of total)

Main Thread Breakdown

Other 38% Style & Layout 21% Script Evaluation 21% Rendering 11% Parse HTML & CSS 4% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
Unattributable1964ms39ms0ms3rd
https://bunny.net/1841ms30ms3ms3rd
https://bunny.net/framework-5c94f8705ee981d74e43.js771ms464ms15ms3rd
https://bunny.net/f1360e94e2e30dbeea7e60c04ed0f3bbc99dc8c6-7da494e8de91670cb9ce.js312ms187ms124ms3rd
https://posthog2.fluffleinfra.net/static/array.js255ms229ms19ms3rd
https://bunny.net/webpack-runtime-b847c8dc28d9ca714870.js79ms67ms1ms3rd
https://widget.trustpilot.com/bootstrap/v5/tp.widget.bootstrap.min.js78ms65ms3ms3rd
D
JS Bundles
Action
21 scripts, 347 KB unused
FIX
21 scripts, 347 KB unused
Warning::
https://bunny.net/f1360e94e2e30dbeea7e60c04ed0f3bb...: 232 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://matomo.bunny.net/matomo.js: 36 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://bunny.net/c3cc495e85ce1c255d2879a48d23f776...: 31 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://posthog2.fluffleinfra.net/static/array.js: 25 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://bunny.net/f42ff2403483af4253546554897cc66e...: 23 KB unused (90%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 347 KB
347 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://bunny.net/f1360e94e2e30dbeea7e60c04ed0f3bbc99dc8c6-7da494e8de91670cb9ce.js297 KB232 KB (78%)✓3rd
https://matomo.bunny.net/matomo.js67 KB36 KB (53%)✓3rd
https://bunny.net/c3cc495e85ce1c255d2879a48d23f776cd39fa15-12d91d8d18bb2b678e1d.js46 KB31 KB (69%)✓3rd
https://posthog2.fluffleinfra.net/static/array.js56 KB25 KB (45%)✓3rd
https://bunny.net/f42ff2403483af4253546554897cc66ecdc598d7-643f0cc06fda69d4fc0b.js27 KB23 KB (90%)✓3rd
https://chat.bunny.net/chat.js0 KB—✓3rd
https://bunny.net/component---src-templates-regular-js-9a5a18bdcecf1d9564a6.js1 KB—✓3rd
https://widget.trustpilot.com/bootstrap/v5/tp.widget.bootstrap.min.js8 KB—✓3rd
https://bunny.net/commons-3861d71dff0ebe6fdfcf.js29 KB—✓3rd
https://bunny.net/webpack-runtime-b847c8dc28d9ca714870.js3 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

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

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

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

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

C
Image Optimization
Action
98 images, 0 KB saveable
REVIEW
98 images, 0 KB saveable
Warning::
https://bunny.net/images/portraits/case-study-pane... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Bunny_DNS_Logo.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Animated-Bunnies/Bunny-Ro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Bunny-Product-Icons/Bunny... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Animated-Bunnies/Bunny-Fa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Bunny_CDN_Logo.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Bunny_Stream_Logo.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/bunny-optimizer-icon-oran... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Magic-Containers-Icon.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/logos-companies-grey/WPRo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Logos-companies/case-stud... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Bunny_Storage_Icon1.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/images/Bunny-Product-Icons/Bunny... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bunny.net/static/free-trial-bunny-rocket-3... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
98 images 527 KB
0 oversized -0 KB
89 legacy format
14 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

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

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

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

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

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

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

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

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

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

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

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

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

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

B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
Cache-Control header is set
Got: no-cache
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache

DirectiveValueMeaning
no-cache—Cache but always revalidate first
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+
Font Loading
7 fonts (347 KB)
PASS
7 fonts (347 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

347 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 2.5 s LCP 10.4 shttps://fonts.bunny.net/rubik/files/rubik-latin-400-normal.woff2rubik-latin-400-normal.... https://fonts.bunny.net/rubik/files/rubik-latin-400-normal.woff2 — 19.2 KiB — 0 ms — font-display: swaphttps://fonts.bunny.net/rubik/files/rubik-latin-700-normal.woff2rubik-latin-700-normal.... https://fonts.bunny.net/rubik/files/rubik-latin-700-normal.woff2 — 19.4 KiB — 0 ms — font-display: swaphttps://bunny.net/static/fa-solid-900-54dfc8f551be346014e424fe36b4b0e3.woff2fa-solid-900-54dfc8f551... https://bunny.net/static/fa-solid-900-54dfc8f551be346014e424fe36b4b0e3.woff2 — 134.7 KiB — 0 ms — font-display: swaphttps://fonts.bunny.net/rubik/files/rubik-latin-500-normal.woff2rubik-latin-500-normal.... https://fonts.bunny.net/rubik/files/rubik-latin-500-normal.woff2 — 19.3 KiB — 0 ms — font-display: swaphttps://bunny.net/static/fa-brands-400-758817162cf589db07115f7bc9e4f8d8.woff2fa-brands-400-758817162... https://bunny.net/static/fa-brands-400-758817162cf589db07115f7bc9e4f8d8.woff2 — 117.0 KiB — 0 ms — font-display: swaphttps://fonts.bunny.net/rubik/files/rubik-latin-300-normal.woff2rubik-latin-300-normal.... https://fonts.bunny.net/rubik/files/rubik-latin-300-normal.woff2 — 17.8 KiB — 0 ms — font-display: swaphttps://fonts.bunny.net/rubik/files/rubik-latin-600-normal.woff2rubik-latin-600-normal.... https://fonts.bunny.net/rubik/files/rubik-latin-600-normal.woff2 — 19.3 KiB — 0 ms — font-display: swap
rubik-latin-400-normal.... woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
rubik-latin-700-normal.... woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
fa-solid-900-54dfc8f551... woff2 swap
Size 135 KB
Load time 0 ms
Start 0 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
rubik-latin-500-normal.... woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400-758817162... woff2 swap
Size 117 KB
Load time 0 ms
Start 0 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
rubik-latin-300-normal.... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
rubik-latin-600-normal.... woff2 swap
Size 19 KB
Load time 0 ms
Start 0 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 ~126 KB and ~252 ms

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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
1
dns-prefetch
—
prefetch
—

2 resource hints configured

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: Hetzner Online GmbH

Network Waterfall
148 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 5300ms · 595KB · €16/mo
Unattributable
Other
Costly
Execution 1964ms
Transfer 0 KB
Monthly Cost €6/mo
bunny.net
Other
Costly
Execution 1841ms
Transfer 181 KB
Monthly Cost €5/mo
bunny.net
Other
Costly
Execution 771ms
Transfer 49 KB
Monthly Cost €2/mo
bunny.net
Other
Costly
Execution 312ms
Transfer 297 KB
Unused 78%
Monthly Cost €1/mo
posthog2.fluffleinfra.net
Other
Costly
Execution 255ms
Transfer 56 KB
Unused 45%
Monthly Cost €1/mo
bunny.net
Other
Optional
Execution 79ms
Transfer 3 KB
Monthly Cost €0/mo
widget.trustpilot.com
Other
Optional
Execution 78ms
Transfer 8 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • Unattributable adds 1964ms and costs ~€6/month
  • bunny.net adds 1841ms and costs ~€5/month
  • bunny.net adds 771ms and costs ~€2/month
  • bunny.net adds 312ms and costs ~€1/month
  • posthog2.fluffleinfra.net adds 255ms and costs ~€1/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

Unattributable takes 1964ms 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

bunny.net takes 1841ms 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

bunny.net takes 771ms 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

bunny.net takes 312ms 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

78% of bunny.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

posthog2.fluffleinfra.net takes 255ms 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.

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