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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
4
REVIEW
1
PASS
10
INFO
2

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

Mobile Desktop
54
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
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.
100
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.

1.43 s

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

16.62 s

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

880 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.

1.43 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.

16.94 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
10 PASS 1 REVIEW 4 FIX
F
Page Weight Budget
Action
3.0 MB transferred, 54 requests
FIX
3.0 MB transferred, 54 requests
Warning::
Page weighs 5.3 MB (3.0 MB transferred)
Warning::
Images are 1.6 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.6 MB
Warning::
JavaScript is 963 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 963 KB
Info::
Fonts are 385 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 385 KB
Info::
54 HTTP requests
Info::
Estimated 0.64 g CO2 per page load
3.0 MB / 2.4 MB budget
3.0 MB transferred
54 requests
0.64 g CO2 per page load
Images 1.6 MiB 53%
JavaScript 963.4 KiB 31%
Fonts 384.6 KiB 12%
Other 68.7 KiB 2%
CSS 44.0 KiB 1%
HTML 13.4 KiB 0%
Other 1012 B 0%
Other 468 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

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

D
JS Execution Cost
Action
3271ms total JS execution
FIX
3271ms total JS execution
Warning::
https://opencollective.com/_next/static/chunks/fra...: 812ms CPU time
Warning::
https://opencollective.com/: 652ms CPU time
Warning::
https://opencollective.com/_next/static/chunks/pag...: 599ms CPU time
Warning::
Unattributable: 405ms CPU time
Warning::
https://opencollective.com/_next/static/chunks/app...: 303ms CPU time
Info::
Third-party scripts: 405ms (12% of total)

Main Thread Breakdown

Script Evaluation 52% Other 20% Script Parsing & Compilation 15% Style & Layout 10%
ScriptTotalScriptingParse/CompileParty
https://opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js812ms657ms107ms1st
https://opencollective.com/652ms15ms0ms1st
https://opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js599ms579ms20ms1st
Unattributable405ms9ms0ms3rd
https://opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js303ms106ms186ms1st
https://opencollective.com/_next/static/chunks/pages/index-fb503a85d698341e.js181ms180ms0ms1st
https://opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js144ms121ms18ms1st
https://opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js88ms1ms86ms1st
https://opencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.js87ms72ms15ms1st
F
JS Bundles
Action
28 scripts, 598 KB unused
FIX
28 scripts, 598 KB unused
Warning::
https://opencollective.com/_next/static/chunks/app...: 297 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://opencollective.com/_next/static/chunks/fra...: 79 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://opencollective.com/_next/static/chunks/132...: 56 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://opencollective.com/_next/static/chunks/132...: 56 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://opencollective.com/_next/static/chunks/158...: 24 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 598 KB
598 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js471 KB297 KB (63%)✓1st
https://opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js115 KB79 KB (69%)✓1st
https://opencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.js0 KB56 KB (46%)✓1st
https://opencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.js40 KB56 KB (46%)✓1st
https://opencollective.com/_next/static/chunks/1586-19927f5c8b6f7147.js0 KB24 KB (81%)✓1st
https://opencollective.com/_next/static/chunks/1586-19927f5c8b6f7147.js11 KB24 KB (81%)✓1st
https://opencollective.com/_next/static/chunks/435-859c19df3b862776.js27 KB21 KB (82%)✓1st
https://opencollective.com/_next/static/chunks/8160-a466f96e1bf8db74.js9 KB20 KB (87%)✓1st
https://opencollective.com/_next/static/chunks/8160-a466f96e1bf8db74.js0 KB20 KB (87%)✓1st
https://opencollective.com/_next/static/S7vam5TMQZklbtaSE71JS/_ssgManifest.js1 KB—✓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

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

D
Page Weight Inventory
Action
54 resources · 3.0 MB · 598 KB savings available
FIX
54 resources · 3.0 MB · 598 KB savings available
Warning::
Page weight 2.0 MB over 1MB target
Got: 3.0 MB Expected: ≤ 1 MB
Info::
~598 KB of savings available
Info::
3 third-party resources (14% of weight)
Info::
3 resources over 200KB
54 resources · 3.0 MiB · 3 third-party 2.0 MiB over 1MB target
Image 53% · 1.6 MiB
JavaScript 33% · 1.0 MiB
Font 12% · 384.6 KiB
CSS 1% · 44.0 KiB
Document 0% · 13.4 KiB
Other 0% · 1.4 KiB

~598.4 KiB of savings available

Remove unused JavaScript: 598.4 KiB
B
Image Optimization
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Info::
All images are well-optimized
16 images 1.6 MB
0 oversized -0 KB
6 legacy format
0 missing dimensions CLS risk
A+
Third-Party Impact
14% third-party, 0 ms blocking
PASS
14% third-party, 0 ms blocking
Info::
Third-party code accounts for 14% of page weight (426.9 KiB of 3.0 MiB)
Info::
Third-party blocking time is low (0 ms)
86%
First-party Third-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+
Font Loading
4 fonts (385 KB)
PASS
4 fonts (385 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

385 KB total

Render-blocking

0

of 4

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 12.0 s 14.0 s 16.0 s FCP 1.4 s LCP 16.6 shttps://opencollective.com/_next/static/media/Inter-Regular.8ff4acff.woff2Inter-Regular.8ff4acff.... https://opencollective.com/_next/static/media/Inter-Regular.8ff4acff.woff2 — 91.3 KiB — 111 ms — font-display: swaphttps://opencollective.com/_next/static/media/Inter-Bold.7bef4653.woff2Inter-Bold.7bef4653.woff2 https://opencollective.com/_next/static/media/Inter-Bold.7bef4653.woff2 — 97.9 KiB — 115 ms — font-display: swaphttps://opencollective.com/_next/static/media/Inter-SemiBold.dbb62f19.woff2Inter-SemiBold.dbb62f19... https://opencollective.com/_next/static/media/Inter-SemiBold.dbb62f19.woff2 — 97.8 KiB — 113 ms — font-display: swaphttps://opencollective.com/_next/static/media/Inter-Medium.4880c56d.woff2Inter-Medium.4880c56d.w... https://opencollective.com/_next/static/media/Inter-Medium.4880c56d.woff2 — 97.6 KiB — 113 ms — font-display: swap
Inter-Regular.8ff4acff.... woff2 swap
Size 91 KB
Load time 111 ms
Start 157 ms
Risk FOUT — text flashes from fallback to web font
Inter-Bold.7bef4653.woff2 woff2 swap
Size 98 KB
Load time 115 ms
Start 158 ms
Risk FOUT — text flashes from fallback to web font
Inter-SemiBold.dbb62f19... woff2 swap
Size 98 KB
Load time 113 ms
Start 158 ms
Risk FOUT — text flashes from fallback to web font
Inter-Medium.4880c56d.w... woff2 swap
Size 98 KB
Load time 113 ms
Start 159 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)
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
7 hints, 0 missing preconnects
PASS
7 hints, 0 missing preconnects
Info::
Page uses 7 resource hint(s)

Current Resource Hints

preconnect
1
preload
2
dns-prefetch
—
prefetch
4

7 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: Cloudflare

A
HTTP Caching
max-age=60 (1 minute)
PASS
max-age=60 (1 minute)
Info::
Cache-Control header is set
Got: public, max-age=60
Info::
Effective TTL: 1 minute (max-age=60)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=60

DirectiveValueMeaning
public—Any cache may store this response
max-age60Cache for 1 minute
Effective TTL: 60 seconds
Network Waterfall
54 requests over 919ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 1.4 s LCP 16.6 shttps://opencollective.com// https://opencollective.com/ — 200 — 13.4 KiB — 32 ms — h3https://opencollective.com/_next/static/css/9e84cdc963f373ab.css/_next/static/css/9e84cdc963f373ab.... https://opencollective.com/_next/static/css/9e84cdc963f373ab.css — 200 — 7.8 KiB — 24 ms — h3https://opencollective.com/_next/static/css/22801a647914709b.css/_next/static/css/22801a647914709b.... https://opencollective.com/_next/static/css/22801a647914709b.css — 200 — 36.2 KiB — 26 ms — h3https://next-images.opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fhero-illustration.png&w=3840&q=75next-images.opencollective.com/_nex... https://next-images.opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fhero-illustration.png&w=3840&q=75 — 200 — 412.1 KiB — 270 ms — h3https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fblue-watercolor-bg.png&w=3840&q=75/_next/image?url=%2Fstatic%2Fimages... https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fblue-watercolor-bg.png&w=3840&q=75 — 200 — 849.6 KiB — 296 ms — h3https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fgreen-watercolor-bg.png&w=750&q=75/_next/image?url=%2Fstatic%2Fimages... https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fgreen-watercolor-bg.png&w=750&q=75 — 200 — 32.0 KiB — 125 ms — h3https://opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js/_next/static/chunks/i18n-messages-... https://opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js — 200 — 109.1 KiB — 86 ms — h3https://opencollective.com/_next/static/chunks/webpack-360d78d57661def5.js/_next/static/chunks/webpack-360d78... https://opencollective.com/_next/static/chunks/webpack-360d78d57661def5.js — 200 — 4.1 KiB — 25 ms — h3https://opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js/_next/static/chunks/framework-8596... https://opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js — 200 — 114.9 KiB — 202 ms — h3https://opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js/_next/static/chunks/main-509d937f6... https://opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js — 200 — 40.4 KiB — 125 ms — h3https://opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js/_next/static/chunks/appCommon-8ef9... https://opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js — 200 — 470.7 KiB — 267 ms — h3https://opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js/_next/static/chunks/pages/_app-f01... https://opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js — 200 — 53.5 KiB — 80 ms — h3https://opencollective.com/_next/static/chunks/9639-8c5b471d470de9e3.js/_next/static/chunks/9639-8c5b471d4... https://opencollective.com/_next/static/chunks/9639-8c5b471d470de9e3.js — 200 — 23.7 KiB — 109 ms — h3https://opencollective.com/_next/static/chunks/435-859c19df3b862776.js/_next/static/chunks/435-859c19df3b... https://opencollective.com/_next/static/chunks/435-859c19df3b862776.js — 200 — 26.8 KiB — 82 ms — h3https://opencollective.com/_next/static/chunks/7496-e3af00f290d22b85.js/_next/static/chunks/7496-e3af00f29... https://opencollective.com/_next/static/chunks/7496-e3af00f290d22b85.js — 200 — 8.2 KiB — 61 ms — h3https://opencollective.com/_next/static/chunks/9213-53c417084c7f2fcf.js/_next/static/chunks/9213-53c417084... https://opencollective.com/_next/static/chunks/9213-53c417084c7f2fcf.js — 200 — 10.2 KiB — 88 ms — h3https://opencollective.com/_next/static/chunks/5085-5a65237dc716b252.js/_next/static/chunks/5085-5a65237dc... https://opencollective.com/_next/static/chunks/5085-5a65237dc716b252.js — 200 — 7.8 KiB — 61 ms — h3https://opencollective.com/_next/static/chunks/6327-ba2651b0346d7e2d.js/_next/static/chunks/6327-ba2651b03... https://opencollective.com/_next/static/chunks/6327-ba2651b0346d7e2d.js — 200 — 12.2 KiB — 61 ms — h3https://opencollective.com/_next/static/chunks/6097-b1aadb05d1e2b7ba.js/_next/static/chunks/6097-b1aadb05d... https://opencollective.com/_next/static/chunks/6097-b1aadb05d1e2b7ba.js — 200 — 10.5 KiB — 112 ms — h3https://opencollective.com/_next/static/chunks/23-29ed13dd4f27e646.js/_next/static/chunks/23-29ed13dd4f2... https://opencollective.com/_next/static/chunks/23-29ed13dd4f27e646.js — 200 — 34.6 KiB — 112 ms — h3https://opencollective.com/_next/static/chunks/1554-8732c77b501cb425.js/_next/static/chunks/1554-8732c77b5... https://opencollective.com/_next/static/chunks/1554-8732c77b501cb425.js — 200 — 7.5 KiB — 81 ms — h3https://opencollective.com/_next/static/chunks/4534-7fe3726a6488e328.js/_next/static/chunks/4534-7fe3726a6... https://opencollective.com/_next/static/chunks/4534-7fe3726a6488e328.js — 200 — 9.1 KiB — 86 ms — h3https://opencollective.com/_next/static/chunks/pages/index-fb503a85d698341e.js/_next/static/chunks/pages/index-fb... https://opencollective.com/_next/static/chunks/pages/index-fb503a85d698341e.js — 200 — 1.3 KiB — 81 ms — h3https://opencollective.com/_next/static/S7vam5TMQZklbtaSE71JS/_buildManifest.js/_next/static/S7vam5TMQZklbtaSE71JS... https://opencollective.com/_next/static/S7vam5TMQZklbtaSE71JS/_buildManifest.js — 200 — 7.1 KiB — 77 ms — h3https://opencollective.com/_next/static/S7vam5TMQZklbtaSE71JS/_ssgManifest.js/_next/static/S7vam5TMQZklbtaSE71JS... https://opencollective.com/_next/static/S7vam5TMQZklbtaSE71JS/_ssgManifest.js — 200 — 946 B — 57 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 68 ms — h2https://opencollective.com/static/images/ofico/ofico-logo.png/static/images/ofico/ofico-logo.png https://opencollective.com/static/images/ofico/ofico-logo.png — 200 — 98.3 KiB — 169 ms — h3https://opencollective.com/static/images/ofico/osc-logo.png/static/images/ofico/osc-logo.png https://opencollective.com/static/images/ofico/osc-logo.png — 200 — 7.1 KiB — 78 ms — h3https://opencollective.com/static/images/ofico/oce-logo.png/static/images/ofico/oce-logo.png https://opencollective.com/static/images/ofico/oce-logo.png — 200 — 16.2 KiB — 81 ms — h3https://opencollective.com/static/images/ofico/giftcollective-logo.png/static/images/ofico/giftcollective... https://opencollective.com/static/images/ofico/giftcollective-logo.png — 200 — 43.7 KiB — 93 ms — h3
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 1.4 s LCP 16.6 shttps://opencollective.com// https://opencollective.com/ — 200 — 13.4 KiB — 32 ms — h3https://opencollective.com/_next/static/css/9e84cdc963f373ab.css/_next/static/css/9e84cdc963f373ab.... https://opencollective.com/_next/static/css/9e84cdc963f373ab.css — 200 — 7.8 KiB — 24 ms — h3https://opencollective.com/_next/static/css/22801a647914709b.css/_next/static/css/22801a647914709b.... https://opencollective.com/_next/static/css/22801a647914709b.css — 200 — 36.2 KiB — 26 ms — h3https://next-images.opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fhero-illustration.png&w=3840&q=75next-images.opencollective.com/_nex... https://next-images.opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fhero-illustration.png&w=3840&q=75 — 200 — 412.1 KiB — 270 ms — h3https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fblue-watercolor-bg.png&w=3840&q=75/_next/image?url=%2Fstatic%2Fimages... https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fblue-watercolor-bg.png&w=3840&q=75 — 200 — 849.6 KiB — 296 ms — h3https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fgreen-watercolor-bg.png&w=750&q=75/_next/image?url=%2Fstatic%2Fimages... https://opencollective.com/_next/image?url=%2Fstatic%2Fimages%2Fgreen-watercolor-bg.png&w=750&q=75 — 200 — 32.0 KiB — 125 ms — h3https://opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js/_next/static/chunks/i18n-messages-... https://opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js — 200 — 109.1 KiB — 86 ms — h3https://opencollective.com/_next/static/chunks/webpack-360d78d57661def5.js/_next/static/chunks/webpack-360d78... https://opencollective.com/_next/static/chunks/webpack-360d78d57661def5.js — 200 — 4.1 KiB — 25 ms — h3https://opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js/_next/static/chunks/framework-8596... https://opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js — 200 — 114.9 KiB — 202 ms — h3https://opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js/_next/static/chunks/main-509d937f6... https://opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js — 200 — 40.4 KiB — 125 ms — h3https://opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js/_next/static/chunks/appCommon-8ef9... https://opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js — 200 — 470.7 KiB — 267 ms — h3https://opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js/_next/static/chunks/pages/_app-f01... https://opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js — 200 — 53.5 KiB — 80 ms — h3https://opencollective.com/_next/static/chunks/9639-8c5b471d470de9e3.js/_next/static/chunks/9639-8c5b471d4... https://opencollective.com/_next/static/chunks/9639-8c5b471d470de9e3.js — 200 — 23.7 KiB — 109 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
12% of JavaScript execution is third-party
First-party Third-party 405ms · 0KB · €4/mo
Unattributable
Other
Costly
Execution 405ms
Transfer 0 KB
Monthly Cost €4/mo

These scripts may cost more than they're worth

  • Unattributable adds 405ms and costs ~€4/month

Unattributable takes 405ms 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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