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https://pearltrees.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
5
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
79
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

1.65 s

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

2.52 s

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

23 ms

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

0.024

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

1.65 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.

2.53 s

Page Load Progression

865 ms
1.7 s
2.6 s
3.5 s
4.3 s
5.2 s
6.1 s
6.9 s
Checks
15
6 PASS 2 REVIEW 5 FIX
D
Page Weight Budget
Action
2.1 MB transferred, 66 requests
FIX
2.1 MB transferred, 66 requests
Info::
Page weighs 5.5 MB (2.1 MB transferred)
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Info::
66 HTTP requests
Info::
Estimated 0.44 g CO2 per page load
2.1 MB / 2.4 MB budget
2.1 MB transferred
66 requests
0.44 g CO2 per page load
JavaScript 1.4 MiB 66%
Images 483.4 KiB 22%
Fonts 115.5 KiB 5%
CSS 69.6 KiB 3%
HTML 47.5 KiB 2%
Other 8.6 KiB 0%
Other 3.7 KiB 0%
Other 1.3 KiB 0%
Other 355 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

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 (2.1 MiB of 2.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
17 scripts, 806 KB unused
FIX
17 scripts, 806 KB unused
Warning::
https://934452450b66.edge.sdk.awswaf.com/934452450...: 244 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.pearltrees.com/v2/app/config-no-jquery...: 31 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.pearltrees.com/v2/app/config-no-jquery...: unminified — 12 KB could be saved
Info::
Total unused JavaScript: 806 KB
806 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/challenge.js501 KB244 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB177 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js0 KB177 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB177 KB (49%)✓3rd
https://cdn.pearltrees.com/v2/app/config-no-jquery.20260420-19h14-10464.js59 KB31 KB (54%)✗3rd
https://www.google.com/recaptcha/api.js?render=6LdRbaMUAAAAAG73QO2jGZaDyi3rSWYU2fY84ghz1 KB—✓3rd
https://cdn.pearltrees.com/v2/vendor/jquery.validate.min.js?20260420-19h14-104647 KB—✓3rd
https://cdn.pearltrees.com/v2static/js/home/signForm.js?20260420-19h14-104648 KB—✓3rd
https://cdnjs.cloudflare.com/ajax/libs/jquery.waitforimages/1.5.0/jquery.waitforimages.min.js1 KB—✓3rd
https://cdn.pearltrees.com/v2/vendor/matomo.js?20260420-19h14-1046419 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

F
Page Weight Inventory
Action
66 resources · 2.1 MB · 806 KB savings available
FIX
66 resources · 2.1 MB · 806 KB savings available
Warning::
Page weight 1.1 MB over 1MB target
Got: 2.1 MB Expected: ≤ 1 MB
Info::
~806 KB of savings available
Warning::
65 third-party resources (100% of weight)
Info::
3 resources over 200KB
66 resources · 2.1 MiB · 65 third-party 1.1 MiB over 1MB target
JavaScript 66% · 1.4 MiB
Image 22% · 484.3 KiB
Font 5% · 115.5 KiB
CSS 3% · 69.6 KiB
Document 2% · 47.5 KiB
Other 1% · 13.1 KiB

~806.2 KiB of savings available

Remove unused JavaScript: 806.2 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-store, no-cache, must-revalidate, post-check=0, pre-check=0

DirectiveValueMeaning
no-store—Never cache this response
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
post-check0
pre-check0
B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Info::
All images are well-optimized
18 images 483 KB
0 oversized -0 KB
18 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1131ms total JS execution
REVIEW
1131ms total JS execution
Warning::
https://www.pearltrees.com/: 338ms CPU time
Warning::
https://934452450b66.edge.sdk.awswaf.com/934452450...: 337ms CPU time
Info::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 192ms CPU time
Info::
https://ajax.googleapis.com/ajax/libs/jquery/1.10....: 168ms CPU time
Info::
Unattributable: 96ms CPU time
Warning::
Third-party scripts: 1131ms (100% of total)

Main Thread Breakdown

Script Evaluation 60% Other 19% Style & Layout 8% Script Parsing & Compilation 6% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://www.pearltrees.com/338ms89ms3ms3rd
https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/challenge.js337ms286ms29ms3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js192ms157ms21ms3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js168ms124ms2ms3rd
Unattributable96ms13ms0ms3rd
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
3 fonts (116 KB)
PASS
3 fonts (116 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

116 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.6 s LCP 2.5 shttps://cdn.pearltrees.com/v2/styles/font/OpenSans-Regular.woff2?browser=CHROME&subdomain=wwwOpenSans-Regular.woff2 https://cdn.pearltrees.com/v2/styles/font/OpenSans-Regular.woff2?browser=CHROME&subdomain=www — 18.8 KiB — 16 ms — font-display: swaphttps://cdn.pearltrees.com/v2/styles/font/OpenSans-Semibold.woff2?browser=CHROME&subdomain=wwwOpenSans-Semibold.woff2 https://cdn.pearltrees.com/v2/styles/font/OpenSans-Semibold.woff2?browser=CHROME&subdomain=www — 62.8 KiB — 6 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 68 ms — font-display: swap
OpenSans-Regular.woff2 woff2 swap
Size 19 KB
Load time 16 ms
Start 498 ms
Risk FOUT — text flashes from fallback to web font
OpenSans-Semibold.woff2 woff2 swap
Size 63 KB
Load time 6 ms
Start 606 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 68 ms
Start 1.2 s
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
No optimization needed
PASS
No optimization needed
Info::
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: OVHcloud

Network Waterfall
66 requests over 4613ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.6 s LCP 2.5 shttps://pearltrees.com// https://pearltrees.com/ — 301 — 393 B — 74 ms — http/1.1http://www.pearltrees.com/www.pearltrees.com/ http://www.pearltrees.com/ — 307 — 0 B — 2 ms — http/1.1https://www.pearltrees.com/www.pearltrees.com/ https://www.pearltrees.com/ — 200 — 20.0 KiB — 100 ms — http/1.1https://cdn.pearltrees.com/v2/bower_components/modernizr/modernizr.jscdn.pearltrees.com/v2/bower_compone... https://cdn.pearltrees.com/v2/bower_components/modernizr/modernizr.js — 200 — 4.9 KiB — 14 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js — 200 — 32.8 KiB — 96 ms — h2https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/challenge.js934452450b66.edge.sdk.awswaf.com/93... https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/challenge.js — 200 — 501.5 KiB — 204 ms — h2https://cdn.pearltrees.com/v2/vendor/jquery.placeholder.jscdn.pearltrees.com/v2/vendor/jquery... https://cdn.pearltrees.com/v2/vendor/jquery.placeholder.js — 200 — 1.4 KiB — 15 ms — h2https://www.google.com/recaptcha/api.js?render=6LdRbaMUAAAAAG73QO2jGZaDyi3rSWYU2fY84ghzwww.google.com/recaptcha/api.js?ren... https://www.google.com/recaptcha/api.js?render=6LdRbaMUAAAAAG73QO2jGZaDyi3rSWYU2fY84ghz — 200 — 1.0 KiB — 64 ms — h3https://cdnjs.cloudflare.com/ajax/libs/jquery.waitforimages/1.5.0/jquery.waitforimages.min.jscdnjs.cloudflare.com/ajax/libs/jque... https://cdnjs.cloudflare.com/ajax/libs/jquery.waitforimages/1.5.0/jquery.waitforimages.min.js — 200 — 1.2 KiB — 53 ms — h3https://cdn.pearltrees.com/v2/vendor/bootstrap/css/bootstrap.min.csscdn.pearltrees.com/v2/vendor/bootst... https://cdn.pearltrees.com/v2/vendor/bootstrap/css/bootstrap.min.css — 200 — 17.1 KiB — 16 ms — h2https://cdn.pearltrees.com/v2static/css/homev2/homePageStyle.css?20260420-19h14-10464cdn.pearltrees.com/v2static/css/hom... https://cdn.pearltrees.com/v2static/css/homev2/homePageStyle.css?20260420-19h14-10464 — 200 — 3.3 KiB — 11 ms — h2https://cdn.pearltrees.com/v2static/css/homev2/homeSignFormsStyle.css?20260420-19h14-10464cdn.pearltrees.com/v2static/css/hom... https://cdn.pearltrees.com/v2static/css/homev2/homeSignFormsStyle.css?20260420-19h14-10464 — 200 — 5.1 KiB — 11 ms — h2https://fonts.googleapis.com/css?family=Robotofonts.googleapis.com/css?family=Rob... https://fonts.googleapis.com/css?family=Roboto — 200 — 1.9 KiB — 75 ms — h2https://cdn.pearltrees.com/v2/vendor/jquery.validate.min.js?20260420-19h14-10464cdn.pearltrees.com/v2/vendor/jquery... https://cdn.pearltrees.com/v2/vendor/jquery.validate.min.js?20260420-19h14-10464 — 200 — 6.6 KiB — 15 ms — h2https://cdn.pearltrees.com/v2static/js/home/signForm.js?20260420-19h14-10464cdn.pearltrees.com/v2static/js/home... https://cdn.pearltrees.com/v2static/js/home/signForm.js?20260420-19h14-10464 — 200 — 8.4 KiB — 15 ms — h2https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js — 200 — 362.4 KiB — 188 ms — h2https://cdn.pearltrees.com/v2/vendor/matomo.js?20260420-19h14-10464cdn.pearltrees.com/v2/vendor/matomo... https://cdn.pearltrees.com/v2/vendor/matomo.js?20260420-19h14-10464 — 200 — 19.2 KiB — 5 ms — h2https://cdn.pearltrees.com/v2/styles/font/OpenSans-Regular.woff2?browser=CHROME&subdomain=wwwcdn.pearltrees.com/v2/styles/font/O... https://cdn.pearltrees.com/v2/styles/font/OpenSans-Regular.woff2?browser=CHROME&subdomain=www — 200 — 18.8 KiB — 16 ms — h2https://cdn.pearltrees.com/v2/app/config-no-jquery.20260420-19h14-10464.jscdn.pearltrees.com/v2/app/config-no... https://cdn.pearltrees.com/v2/app/config-no-jquery.20260420-19h14-10464.js — 200 — 59.1 KiB — 11 ms — h2https://cdn2.pearltrees.com/v2static/asset/homev2/sheet/sprite.png?6b7a0509a6cdn2.pearltrees.com/v2static/asset/... https://cdn2.pearltrees.com/v2static/asset/homev2/sheet/sprite.png?6b7a0509a6 — 200 — 14.8 KiB — 9 ms — h2https://cdn.pearltrees.com/v2static/asset/homev2/sprite/join_button_h.png?20260420-19h14-10464cdn.pearltrees.com/v2static/asset/h... https://cdn.pearltrees.com/v2static/asset/homev2/sprite/join_button_h.png?20260420-19h14-10464 — 200 — 1.4 KiB — 5 ms — h2https://cdn.pearltrees.com/v2static/asset/homev2/sprite/join_button_a.png?20260420-19h14-10464cdn.pearltrees.com/v2static/asset/h... https://cdn.pearltrees.com/v2static/asset/homev2/sprite/join_button_a.png?20260420-19h14-10464 — 200 — 1.4 KiB — 6 ms — h2https://cdn.pearltrees.com/v2/styles/font/OpenSans-Semibold.woff2?browser=CHROME&subdomain=wwwcdn.pearltrees.com/v2/styles/font/O... https://cdn.pearltrees.com/v2/styles/font/OpenSans-Semibold.woff2?browser=CHROME&subdomain=www — 200 — 62.8 KiB — 6 ms — h2https://matomo.pearltrees.com/matomo.php?action_name=Pearltrees&idsite=4&rec=1&r=642114&h=22&m=3&s=15&url=https%3A%2F%2Fwww.pearltrees.com%2F&_id=&_idn=1&send_image=0&_refts=0&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600&dimension1=public&dimension2=none&pv_id=PsPV61&pf_net=46&pf_srv=35&pf_tfr=20&pf_dm1=342&uadata=%7B%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7Dmatomo.pearltrees.com/matomo.php?ac... https://matomo.pearltrees.com/matomo.php?action_name=Pearltrees&idsite=4&rec=1&r=642114&h=22&m=3&s=15&url=https%3A%2F%2Fwww.pearltrees.com%2F&_id=&_idn=1&send_image=0&_refts=0&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600&dimension1=public&dimension2=none&pv_id=PsPV61&pf_net=46&pf_srv=35&pf_tfr=20&pf_dm1=342&uadata=%7B%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D — 204 — 178 B — 150 ms — h2https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/mp_verify934452450b66.edge.sdk.awswaf.com/93... https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/mp_verify — 200 — 711 B — 159 ms — h2https://cdn2.pearltrees.com/v2/app/home/mainhome.js?v=20260420-19h14-10464cdn2.pearltrees.com/v2/app/home/mai... https://cdn2.pearltrees.com/v2/app/home/mainhome.js?v=20260420-19h14-10464 — 200 — 50.1 KiB — 8 ms — h2https://cdn2.pearltrees.com/v2/vendor/require-jquery-conflict.js?v=20260420-19h14-10464cdn2.pearltrees.com/v2/vendor/requi... https://cdn2.pearltrees.com/v2/vendor/require-jquery-conflict.js?v=20260420-19h14-10464 — 200 — 545 B — 6 ms — h2https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LdRbaMUAAAAAG73QO2jGZaDyi3rSWYU2fY84ghz&co=aHR0cHM6Ly93d3cucGVhcmx0cmVlcy5jb206NDQz&hl=en&v=gTpTIWhbKpxADzTzkcabhXN4&size=invisible&anchor-ms=20000&execute-ms=30000&cb=ammpfp1avx48www.google.com/recaptcha/api2/ancho... https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LdRbaMUAAAAAG73QO2jGZaDyi3rSWYU2fY84ghz&co=aHR0cHM6Ly93d3cucGVhcmx0cmVlcy5jb206NDQz&hl=en&v=gTpTIWhbKpxADzTzkcabhXN4&size=invisible&anchor-ms=20000&execute-ms=30000&cb=ammpfp1avx48 — 200 — 27.6 KiB — 81 ms — h3https://www.pearltrees.com/s/statsapi/sendStatwww.pearltrees.com/s/statsapi/sendS... https://www.pearltrees.com/s/statsapi/sendStat — 200 — 429 B — 25 ms — http/1.1https://www.pearltrees.com/s/statsapi/sendStatwww.pearltrees.com/s/statsapi/sendS... https://www.pearltrees.com/s/statsapi/sendStat — 200 — 429 B — 52 ms — http/1.1
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.6 s LCP 2.5 shttps://pearltrees.com// https://pearltrees.com/ — 301 — 393 B — 74 ms — http/1.1http://www.pearltrees.com/www.pearltrees.com/ http://www.pearltrees.com/ — 307 — 0 B — 2 ms — http/1.1https://www.pearltrees.com/www.pearltrees.com/ https://www.pearltrees.com/ — 200 — 20.0 KiB — 100 ms — http/1.1https://cdn.pearltrees.com/v2/bower_components/modernizr/modernizr.jscdn.pearltrees.com/v2/bower_compone... https://cdn.pearltrees.com/v2/bower_components/modernizr/modernizr.js — 200 — 4.9 KiB — 14 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js — 200 — 32.8 KiB — 96 ms — h2https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/challenge.js934452450b66.edge.sdk.awswaf.com/93... https://934452450b66.edge.sdk.awswaf.com/934452450b66/c4b8876d5ebf/challenge.js — 200 — 501.5 KiB — 204 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
100% of JavaScript execution is third-party
First-party Third-party 1131ms · 554KB · €12/mo
www.pearltrees.com
Other
Costly
Execution 338ms
Transfer 20 KB
Monthly Cost €4/mo
934452450b66.edge.sdk.awswaf.com
Other
Costly
Execution 337ms
Transfer 501 KB
Unused 49%
Monthly Cost €4/mo
www.gstatic.com
Other
Optional
Execution 192ms
Transfer 0 KB
Unused 49%
Monthly Cost €2/mo
ajax.googleapis.com
Other
Optional
Execution 168ms
Transfer 33 KB
Monthly Cost €2/mo
Unattributable
Other
Optional
Execution 96ms
Transfer 0 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.pearltrees.com adds 338ms and costs ~€4/month
  • 934452450b66.edge.sdk.awswaf.com adds 337ms and costs ~€4/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

www.pearltrees.com takes 338ms 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

934452450b66.edge.sdk.awswaf.com takes 337ms 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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