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https://ampproject.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
1
REVIEW
3
PASS
9
INFO
2

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

Mobile Desktop
99
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

749 ms

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

788 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.

0.000

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

749 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

790 ms

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
15
9 PASS 3 REVIEW 1 FIX
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 (760.9 KiB of 761.1 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
B
Image Optimization
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Info::
All images are well-optimized
16 images 522 KB
0 oversized -0 KB
12 legacy format
0 missing dimensions CLS risk
B
JS Bundles
14 scripts, 57 KB unused
REVIEW
14 scripts, 57 KB unused
Warning::
https://cdn.ampproject.org/v0.mjs: 32 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.ampproject.org/v0/amp-analytics-0.1.mj...: 25 KB unused (87%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 57 KB
57 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.ampproject.org/v0.mjs62 KB32 KB (52%)✓3rd
https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs29 KB25 KB (87%)✓3rd
https://cdn.ampproject.org/v0/amp-animation-0.1.mjs16 KB—✓3rd
https://cdn.ampproject.org/v0/amp-base-carousel-0.1.mjs8 KB—✓3rd
https://cdn.ampproject.org/v0/amp-bind-0.1.mjs14 KB—✓3rd
https://cdn.ampproject.org/v0/amp-consent-0.1.mjs16 KB—✓3rd
https://cdn.ampproject.org/v0/amp-fx-collection-0.1.mjs5 KB—✓3rd
https://cdn.ampproject.org/v0/amp-geo-0.1.mjs4 KB—✓3rd
https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.mjs2 KB—✓3rd
https://cdn.ampproject.org/v0/amp-position-observer-0.1.mjs4 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

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

private

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
A
Page Weight Budget
761 KB transferred, 39 requests
PASS
761 KB transferred, 39 requests
Info::
Page weighs 1.3 MB (761 KB transferred)
Info::
39 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
761 KB / 2.4 MB budget
761 KB transferred
39 requests
0.16 g CO2 per page load
Images 522.5 KiB 69%
JavaScript 165.3 KiB 22%
HTML 27.3 KiB 4%
Fonts 27.2 KiB 4%
Other 12.9 KiB 2%
Other 5.5 KiB 1%
Other 549 B 0%
0 2.4 MB 4.9 MB
Under budget
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+
JS Execution Cost
239ms total JS execution
PASS
239ms total JS execution
Info::
https://cdn.ampproject.org/v0.mjs: 105ms CPU time
Info::
https://amp.dev/: 69ms CPU time
Info::
Unattributable: 66ms CPU time
Warning::
Third-party scripts: 239ms (100% of total)

Main Thread Breakdown

Script Evaluation 36% Other 35% Style & Layout 20% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://cdn.ampproject.org/v0.mjs105ms80ms0ms3rd
https://amp.dev/69ms1ms0ms3rd
Unattributable66ms3ms0ms3rd
A+
Font Loading
3 fonts (27 KB)
PASS
3 fonts (27 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

27 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 FCP 749 ms LCP 788 mshttps://amp.dev/static/fonts/poppins-v5-latin-700.woff2poppins-v5-latin-700.woff2 https://amp.dev/static/fonts/poppins-v5-latin-700.woff2 — 7.8 KiB — 55 ms — font-display: swaphttps://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2noto-sans-v7-latin-700.... https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2 — 9.6 KiB — 54 ms — font-display: swaphttps://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2noto-sans-v7-latin-regu... https://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2 — 9.8 KiB — 37 ms — font-display: swap
poppins-v5-latin-700.woff2 woff2 swap
Size 8 KB
Load time 55 ms
Start 227 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-v7-latin-700.... woff2 swap
Size 10 KB
Load time 54 ms
Start 228 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-v7-latin-regu... woff2 swap
Size 10 KB
Load time 37 ms
Start 289 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Page Weight Inventory
39 resources · 761 KB · 57 KB savings available
PASS
39 resources · 761 KB · 57 KB savings available
Info::
Within 1MB page-weight target
Got: 761 KB
Info::
~57 KB of savings available
Warning::
38 third-party resources (100% of weight)
39 resources · 761.1 KiB · 38 third-party Within 1MB page-weight target
Image 69% · 527.5 KiB
JavaScript 23% · 178.2 KiB
Document 4% · 27.5 KiB
Font 4% · 27.2 KiB
Other 0% · 800 B

~57.1 KiB of savings available

Remove unused JavaScript: 57.1 KiB
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

Network Waterfall
39 requests over 795ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 749 ms LCP 788 mshttps://ampproject.org// https://ampproject.org/ — 302 — 249 B — 40 ms — h2https://www.ampproject.org/www.ampproject.org/ https://www.ampproject.org/ — 301 — 251 B — 6 ms — h2https://amp.dev/amp.dev/ https://amp.dev/ — 200 — 27.3 KiB — 139 ms — h2https://amp.dev/static/fonts/poppins-v5-latin-700.woff2amp.dev/static/fonts/poppins-v5-lat... https://amp.dev/static/fonts/poppins-v5-latin-700.woff2 — 200 — 7.8 KiB — 55 ms — h2https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2amp.dev/static/fonts/noto-sans-v7-l... https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2 — 200 — 9.6 KiB — 54 ms — h2https://cdn.ampproject.org/v0.mjscdn.ampproject.org/v0.mjs https://cdn.ampproject.org/v0.mjs — 200 — 62.3 KiB — 184 ms — h2https://cdn.ampproject.org/v0/amp-analytics-0.1.mjscdn.ampproject.org/v0/amp-analytics... https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs — 200 — 28.5 KiB — 140 ms — h2https://cdn.ampproject.org/v0/amp-animation-0.1.mjscdn.ampproject.org/v0/amp-animation... https://cdn.ampproject.org/v0/amp-animation-0.1.mjs — 200 — 16.4 KiB — 173 ms — h2https://cdn.ampproject.org/v0/amp-base-carousel-0.1.mjscdn.ampproject.org/v0/amp-base-caro... https://cdn.ampproject.org/v0/amp-base-carousel-0.1.mjs — 200 — 8.1 KiB — 161 ms — h2https://cdn.ampproject.org/v0/amp-bind-0.1.mjscdn.ampproject.org/v0/amp-bind-0.1.... https://cdn.ampproject.org/v0/amp-bind-0.1.mjs — 200 — 13.7 KiB — 167 ms — h2https://cdn.ampproject.org/v0/amp-consent-0.1.mjscdn.ampproject.org/v0/amp-consent-0... https://cdn.ampproject.org/v0/amp-consent-0.1.mjs — 200 — 15.7 KiB — 175 ms — h2https://cdn.ampproject.org/v0/amp-fx-collection-0.1.mjscdn.ampproject.org/v0/amp-fx-collec... https://cdn.ampproject.org/v0/amp-fx-collection-0.1.mjs — 200 — 5.0 KiB — 177 ms — h2https://cdn.ampproject.org/v0/amp-geo-0.1.mjscdn.ampproject.org/v0/amp-geo-0.1.m... https://cdn.ampproject.org/v0/amp-geo-0.1.mjs — 200 — 3.6 KiB — 183 ms — h2https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.mjscdn.ampproject.org/v0/amp-install-s... https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.mjs — 200 — 2.4 KiB — 108 ms — h2https://cdn.ampproject.org/v0/amp-position-observer-0.1.mjscdn.ampproject.org/v0/amp-position-... https://cdn.ampproject.org/v0/amp-position-observer-0.1.mjs — 200 — 4.1 KiB — 106 ms — h2https://cdn.ampproject.org/v0/amp-selector-0.1.mjscdn.ampproject.org/v0/amp-selector-... https://cdn.ampproject.org/v0/amp-selector-0.1.mjs — 200 — 2.7 KiB — 109 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%2320202A' viewBox…www.w3.org/2000/svg' fill='%2320202... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%2320202A' viewBox… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3…www.w3.org/2000/svg' viewBox='0 0 6... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0…www.w3.org/2000/svg' fill='%23fff' ... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23005af0' viewBox…www.w3.org/2000/svg' fill='%23005af... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23005af0' viewBox… — 200 — 0 B — 0 ms — datahttps://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2amp.dev/static/fonts/noto-sans-v7-l... https://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2 — 200 — 9.8 KiB — 37 ms — h2https://amp.dev/manifest.jsonamp.dev/manifest.json https://amp.dev/manifest.json — 200 — 549 B — 99 ms — h2https://cdn.ampproject.org/rtv/012603032146000/v0/amp-auto-lightbox-0.1.mjscdn.ampproject.org/rtv/012603032146... https://cdn.ampproject.org/rtv/012603032146000/v0/amp-auto-lightbox-0.1.mjs — 200 — 2.9 KiB — 28 ms — h2https://cdn.ampproject.org/rtv/012603032146000/ww.mjscdn.ampproject.org/rtv/012603032146... https://cdn.ampproject.org/rtv/012603032146000/ww.mjs — 200 — 12.9 KiB — 32 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F12%252Funboxing-the-bento-component-library-768x384.pngamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F12%252Funboxing-the-bento-component-library-768x384.png — 200 — 52.0 KiB — 38 ms — h2https://amp.dev/static/img/favicon.pngamp.dev/static/img/favicon.png https://amp.dev/static/img/favicon.png — 200 — 2.1 KiB — 47 ms — h2blob:https://amp.dev/0a195d6e-6ffe-435c-b146-dde655fa7f07amp.dev/0a195d6e-6ffe-435c-b146-dde... blob:https://amp.dev/0a195d6e-6ffe-435c-b146-dde655fa7f07 — 200 — -1 B — 27 ms — blobhttps://amp.dev/static/img/icons/icon-144x144.pngamp.dev/static/img/icons/icon-144x1... https://amp.dev/static/img/icons/icon-144x144.png — 200 — 2.9 KiB — 45 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F09%252Fimage4-768x384.jpgamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F09%252Fimage4-768x384.jpg — 200 — 49.0 KiB — 78 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F08%252Fimage7-768x384.jpgamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F08%252Fimage7-768x384.jpg — 200 — 48.3 KiB — 253 ms — h2
0 ms 200 ms 400 ms 600 ms 800 ms FCP 749 ms LCP 788 mshttps://ampproject.org// https://ampproject.org/ — 302 — 249 B — 40 ms — h2https://www.ampproject.org/www.ampproject.org/ https://www.ampproject.org/ — 301 — 251 B — 6 ms — h2https://amp.dev/amp.dev/ https://amp.dev/ — 200 — 27.3 KiB — 139 ms — h2https://amp.dev/static/fonts/poppins-v5-latin-700.woff2amp.dev/static/fonts/poppins-v5-lat... https://amp.dev/static/fonts/poppins-v5-latin-700.woff2 — 200 — 7.8 KiB — 55 ms — h2https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2amp.dev/static/fonts/noto-sans-v7-l... https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2 — 200 — 9.6 KiB — 54 ms — h2https://cdn.ampproject.org/v0.mjscdn.ampproject.org/v0.mjs https://cdn.ampproject.org/v0.mjs — 200 — 62.3 KiB — 184 ms — h2https://cdn.ampproject.org/v0/amp-analytics-0.1.mjscdn.ampproject.org/v0/amp-analytics... https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs — 200 — 28.5 KiB — 140 ms — h2https://cdn.ampproject.org/v0/amp-animation-0.1.mjscdn.ampproject.org/v0/amp-animation... https://cdn.ampproject.org/v0/amp-animation-0.1.mjs — 200 — 16.4 KiB — 173 ms — h2https://cdn.ampproject.org/v0/amp-base-carousel-0.1.mjscdn.ampproject.org/v0/amp-base-caro... https://cdn.ampproject.org/v0/amp-base-carousel-0.1.mjs — 200 — 8.1 KiB — 161 ms — h2https://cdn.ampproject.org/v0/amp-bind-0.1.mjscdn.ampproject.org/v0/amp-bind-0.1.... https://cdn.ampproject.org/v0/amp-bind-0.1.mjs — 200 — 13.7 KiB — 167 ms — h2https://cdn.ampproject.org/v0/amp-consent-0.1.mjscdn.ampproject.org/v0/amp-consent-0... https://cdn.ampproject.org/v0/amp-consent-0.1.mjs — 200 — 15.7 KiB — 175 ms — h2https://cdn.ampproject.org/v0/amp-fx-collection-0.1.mjscdn.ampproject.org/v0/amp-fx-collec... https://cdn.ampproject.org/v0/amp-fx-collection-0.1.mjs — 200 — 5.0 KiB — 177 ms — h2https://cdn.ampproject.org/v0/amp-geo-0.1.mjscdn.ampproject.org/v0/amp-geo-0.1.m... https://cdn.ampproject.org/v0/amp-geo-0.1.mjs — 200 — 3.6 KiB — 183 ms — h2https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.mjscdn.ampproject.org/v0/amp-install-s... https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.mjs — 200 — 2.4 KiB — 108 ms — h2https://cdn.ampproject.org/v0/amp-position-observer-0.1.mjscdn.ampproject.org/v0/amp-position-... https://cdn.ampproject.org/v0/amp-position-observer-0.1.mjs — 200 — 4.1 KiB — 106 ms — h2https://cdn.ampproject.org/v0/amp-selector-0.1.mjscdn.ampproject.org/v0/amp-selector-... https://cdn.ampproject.org/v0/amp-selector-0.1.mjs — 200 — 2.7 KiB — 109 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%2320202A' viewBox…www.w3.org/2000/svg' fill='%2320202... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%2320202A' viewBox… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3…www.w3.org/2000/svg' viewBox='0 0 6... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0…www.w3.org/2000/svg' fill='%23fff' ... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23005af0' viewBox…www.w3.org/2000/svg' fill='%23005af... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23005af0' viewBox… — 200 — 0 B — 0 ms — datahttps://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2amp.dev/static/fonts/noto-sans-v7-l... https://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2 — 200 — 9.8 KiB — 37 ms — h2https://amp.dev/manifest.jsonamp.dev/manifest.json https://amp.dev/manifest.json — 200 — 549 B — 99 ms — h2https://cdn.ampproject.org/rtv/012603032146000/v0/amp-auto-lightbox-0.1.mjscdn.ampproject.org/rtv/012603032146... https://cdn.ampproject.org/rtv/012603032146000/v0/amp-auto-lightbox-0.1.mjs — 200 — 2.9 KiB — 28 ms — h2https://cdn.ampproject.org/rtv/012603032146000/ww.mjscdn.ampproject.org/rtv/012603032146... https://cdn.ampproject.org/rtv/012603032146000/ww.mjs — 200 — 12.9 KiB — 32 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F12%252Funboxing-the-bento-component-library-768x384.pngamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F12%252Funboxing-the-bento-component-library-768x384.png — 200 — 52.0 KiB — 38 ms — h2https://amp.dev/static/img/favicon.pngamp.dev/static/img/favicon.png https://amp.dev/static/img/favicon.png — 200 — 2.1 KiB — 47 ms — h2blob:https://amp.dev/0a195d6e-6ffe-435c-b146-dde655fa7f07amp.dev/0a195d6e-6ffe-435c-b146-dde... blob:https://amp.dev/0a195d6e-6ffe-435c-b146-dde655fa7f07 — 200 — -1 B — 27 ms — blobhttps://amp.dev/static/img/icons/icon-144x144.pngamp.dev/static/img/icons/icon-144x1... https://amp.dev/static/img/icons/icon-144x144.png — 200 — 2.9 KiB — 45 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F09%252Fimage4-768x384.jpgamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F09%252Fimage4-768x384.jpg — 200 — 49.0 KiB — 78 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F08%252Fimage7-768x384.jpgamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F08%252Fimage7-768x384.jpg — 200 — 48.3 KiB — 253 ms — h2https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F08%252Fimage1-1-768x384.pngamp.dev/static/remote/https%253A%25... https://amp.dev/static/remote/https%253A%252F%252Fblog.amp.dev%252Fwp-content%252Fuploads%252F2021%252F08%252Fimage1-1-768x384.png — 200 — 121.7 KiB — 265 ms — h2https://amp.dev/static/img/success-stories/washington_post/teaser_washington_post.jpgamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/washington_post/teaser_washington_post.jpg — 200 — 42.0 KiB — 80 ms — h2https://amp.dev/static/img/success-stories/teads/teaser_teads.jpgamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/teads/teaser_teads.jpg — 200 — 61.1 KiB — 75 ms — h2https://amp.dev/static/img/success-stories/carved/teaser_carved.jpgamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/carved/teaser_carved.jpg — 200 — 82.5 KiB — 75 ms — h2https://amp.dev/static/img/success-stories/womp/teaser_wompmobile.jpgamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/womp/teaser_wompmobile.jpg — 200 — 33.1 KiB — 79 ms — h2https://amp.dev/static/img/success-stories/washington_post/washington_post_logo.pngamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/washington_post/washington_post_logo.png — 200 — 20.4 KiB — 43 ms — h2https://amp.dev/static/img/success-stories/teads/teads_logo.pngamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/teads/teads_logo.png — 200 — 4.6 KiB — 43 ms — h2https://amp.dev/static/img/success-stories/carved/carved_logo.pngamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/carved/carved_logo.png — 200 — 2.9 KiB — 75 ms — h2https://amp.dev/static/img/success-stories/womp/wompmobile_logo.pngamp.dev/static/img/success-stories/... https://amp.dev/static/img/success-stories/womp/wompmobile_logo.png — 200 — 4.8 KiB — 80 ms — h2
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 239ms · 90KB · €3/mo
cdn.ampproject.org
Other
Optional
Execution 105ms
Transfer 62 KB
Unused 52%
Monthly Cost €1/mo
amp.dev
Other
Optional
Execution 69ms
Transfer 27 KB
Monthly Cost €1/mo
Unattributable
Other
Optional
Execution 66ms
Transfer 0 KB
Monthly Cost €1/mo

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

52% of cdn.ampproject.org'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

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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