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https://podomatic.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
0
REVIEW
6
PASS
9
INFO
2

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

61
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
73
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.
83
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.

3.83 s

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

7.37 s

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

277 ms

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

0.016

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

3.96 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.

7.37 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
9 PASS 6 REVIEW
B
Page Weight Budget
1.4 MB transferred, 50 requests
REVIEW
1.4 MB transferred, 50 requests
Info::
Page weighs 2.2 MB (1.4 MB transferred)
Info::
Fonts are 239 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 239 KB
Info::
50 HTTP requests
Info::
Estimated 0.29 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
50 requests
0.29 g CO2 per page load
Images 821.5 KiB 59%
JavaScript 266.3 KiB 19%
Fonts 239.1 KiB 17%
CSS 42.3 KiB 3%
HTML 16.6 KiB 1%
Other 5.5 KiB 0%
Other 589 B 0%
Other 20 B 0%
0 2.4 MB 4.9 MB
Under budget

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

C
Image Optimization
Action
36 images, 0 KB saveable
REVIEW
36 images, 0 KB saveable
Warning::
https://podomatic.com/assets/splash/youtube/spotif... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://podomatic.com/assets/podomatic-logo-large-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://podomatic.com/assets/splash/youtube/deezer... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://podomatic.com/assets/splash/youtube/apple_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://podomatic.com/assets/splash/youtube/amazon... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://podomatic.com/assets/youtube/yt_icon_red_d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://podomatic.com/assets/splash/youtube/pfm-56... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
36 images 821 KB
0 oversized -0 KB
14 legacy format
7 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

C
JS Execution Cost
Action
1525ms total JS execution
REVIEW
1525ms total JS execution
Warning::
https://podomatic.com/: 424ms CPU time
Warning::
Unattributable: 399ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-DXJJ...: 345ms CPU time
Info::
https://podomatic.com/assets/splash-11fcf72bd8a4a2...: 190ms CPU time
Info::
https://www.google-analytics.com/analytics.js: 111ms CPU time
Warning::
Third-party scripts: 911ms (60% of total)

Main Thread Breakdown

Script Evaluation 35% Other 28% Style & Layout 23% Script Parsing & Compilation 8%
ScriptTotalScriptingParse/CompileParty
https://podomatic.com/424ms13ms4ms1st
Unattributable399ms11ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-DXJJ858SDJ345ms277ms66ms3rd
https://podomatic.com/assets/splash-11fcf72bd8a4a221d4cbffe79a2ddabe263526b9777c9ee527e3a19a2c08bfaf.js190ms109ms33ms1st
https://www.google-analytics.com/analytics.js111ms97ms7ms3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451655ms33ms14ms3rd
B
JS Bundles
5 scripts, 121 KB unused
REVIEW
5 scripts, 121 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-DXJJ...: 64 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://podomatic.com/assets/splash-11fcf72bd8a4a2...: 56 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 121 KB
121 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-DXJJ858SDJ160 KB64 KB (40%)3rd
https://podomatic.com/assets/splash-11fcf72bd8a4a221d4cbffe79a2ddabe263526b9777c9ee527e3a19a2c08bfaf.js75 KB56 KB (76%)1st
https://podomatic.com/assets/beacons-c4e042abf9c960928e46f2701efb5a4f57fbc4f622abaf7a1b762cf6d6b22244.js1 KB1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 KB3rd
https://www.google-analytics.com/analytics.js21 KB3rd

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
Page Weight Inventory
50 resources · 1.4 MB · 121 KB savings available
REVIEW
50 resources · 1.4 MB · 121 KB savings available
Warning::
Page weight 368 KB over 1MB target
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~121 KB of savings available
Info::
7 third-party resources (16% of weight)
Info::
2 resources over 200KB
50 resources · 1.4 MiB · 7 third-party 367.9 KiB over 1MB target
Image 59% · 827.0 KiB
JavaScript 19% · 266.3 KiB
Font 17% · 239.1 KiB
CSS 3% · 42.3 KiB
Document 1% · 16.6 KiB
Other 0% · 609 B

~120.6 KiB of savings available

Remove unused JavaScript: 120.6 KiB
B
HTTP Caching
max-age=0, private, must-revalidate
REVIEW
max-age=0, private, must-revalidate
Info::
Cache-Control header is set
Got: max-age=0, private, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, private, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
privateOnly browser cache, not CDN/proxy
must-revalidateMust recheck with server after expiry
A+
Third-Party Impact
16% third-party, 0 ms blocking
PASS
16% third-party, 0 ms blocking
Info::
Third-party code accounts for 16% of page weight (228.8 KiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
84%
16%
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
2 fonts (239 KB)
PASS
2 fonts (239 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

239 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 3.8 s LCP 7.4 shttps://fonts.gstatic.com/s/dmsans/v17/rP2Yp2ywxg089UriI5-g4vlH9VoD8Cmcqbu0-K6z9mXg.woff2rP2Yp2ywxg089UriI5-g4vl... https://fonts.gstatic.com/s/dmsans/v17/rP2Yp2ywxg089UriI5-g4vlH9VoD8Cmcqbu0-K6z9mXg.woff2 — 36.1 KiB — 33 ms — font-display: swaphttps://podomatic.com/assets/NunitoSans-VariableFont-4eddcfaf7ce8dfe397ba6572a07296ec39e0934ed53f17c59e7911741386b94e.woff2NunitoSans-VariableFont... https://podomatic.com/assets/NunitoSans-VariableFont-4eddcfaf7ce8dfe397ba6572a07296ec39e0934ed53f17c59e7911741386b94e.woff2 — 202.9 KiB — 146 ms — font-display: swap
rP2Yp2ywxg089UriI5-g4vl... woff2 swap
Size 36 KB
Load time 33 ms
Start 591 ms
Risk FOUT — text flashes from fallback to web font
NunitoSans-VariableFont... woff2 swap
Size 203 KB
Load time 146 ms
Start 592 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 ~101 KB and ~202 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
2
preload
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: Cloudflare

Network Waterfall
50 requests over 1072ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 3.8 s LCP 7.4 shttps://podomatic.com// https://podomatic.com/ — 200 — 16.6 KiB — 380 ms — h2https://podomatic.com/assets/beacons-c4e042abf9c960928e46f2701efb5a4f57fbc4f622abaf7a1b762cf6d6b22244.js/assets/beacons-c4e042abf9c960928e4... https://podomatic.com/assets/beacons-c4e042abf9c960928e46f2701efb5a4f57fbc4f622abaf7a1b762cf6d6b22244.js — 200 — 547 B — 18 ms — h2https://podomatic.com/assets/splash-641fff43aa392f3b58c528b1bfe847994c7ca14bc250882091b1b4499b5d2f42.css/assets/splash-641fff43aa392f3b58c5... https://podomatic.com/assets/splash-641fff43aa392f3b58c528b1bfe847994c7ca14bc250882091b1b4499b5d2f42.css — 200 — 41.4 KiB — 84 ms — h2https://podomatic.com/assets/splash-11fcf72bd8a4a221d4cbffe79a2ddabe263526b9777c9ee527e3a19a2c08bfaf.js/assets/splash-11fcf72bd8a4a221d4cb... https://podomatic.com/assets/splash-11fcf72bd8a4a221d4cbffe79a2ddabe263526b9777c9ee527e3a19a2c08bfaf.js — 200 — 74.6 KiB — 26 ms — h2https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400;1,500;1,700&display=swapfonts.googleapis.com/css2?family=DM... https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400;1,500;1,700&display=swap — 200 — 997 B — 45 ms — h2https://podomatic.com/assets/podomatic-logo-large-88d94a4b469308b8e98631df6d0494040a8d36e01edc442550d5bebbc2e1539a.svg/assets/podomatic-logo-large-88d94a... https://podomatic.com/assets/podomatic-logo-large-88d94a4b469308b8e98631df6d0494040a8d36e01edc442550d5bebbc2e1539a.svg — 200 — 1.4 KiB — 24 ms — h2https://podomatic.com/assets/splash/create/podomatic-dashboard-a0986302545e0610b464f4cd1049347ab42e5231083e2cb950cb535e3cd4a466.png/assets/splash/create/podomatic-das... https://podomatic.com/assets/splash/create/podomatic-dashboard-a0986302545e0610b464f4cd1049347ab42e5231083e2cb950cb535e3cd4a466.png — 200 — 340.4 KiB — 27 ms — h2https://podomatic.com/assets/splash/youtube/apple_podcast-9becaa76de402a7e80283e67b7f6370129440f8936dbbd22233877e4908bd9b7.svg/assets/splash/youtube/apple_podcas... https://podomatic.com/assets/splash/youtube/apple_podcast-9becaa76de402a7e80283e67b7f6370129440f8936dbbd22233877e4908bd9b7.svg — 200 — 1.5 KiB — 12 ms — h2https://podomatic.com/assets/splash/youtube/spotify-37b087bbcb27121a319d0d4a5923e158e7e437212361dee35b01bee470ec5700.svg/assets/splash/youtube/spotify-37b0... https://podomatic.com/assets/splash/youtube/spotify-37b087bbcb27121a319d0d4a5923e158e7e437212361dee35b01bee470ec5700.svg — 200 — 682 B — 89 ms — h2https://podomatic.com/assets/youtube/yt_icon_red_digital_cropped-20263cf7857a12dfcced1a494db83559e2cefdb7b80079dcec0980d6033967af.png/assets/youtube/yt_icon_red_digital... https://podomatic.com/assets/youtube/yt_icon_red_digital_cropped-20263cf7857a12dfcced1a494db83559e2cefdb7b80079dcec0980d6033967af.png — 200 — 12.6 KiB — 81 ms — h2https://podomatic.com/assets/splash/youtube/amazon_music_logo-d753799d05dc06e5a6e6edb46c33b2065ede171568d1382fc86eb45157331aa6.svg/assets/splash/youtube/amazon_music... https://podomatic.com/assets/splash/youtube/amazon_music_logo-d753799d05dc06e5a6e6edb46c33b2065ede171568d1382fc86eb45157331aa6.svg — 200 — 11.1 KiB — 116 ms — h2https://podomatic.com/assets/splash/youtube/deezer_logo-7c44cef3f0286ea5ddf6402352c773ed94c8b958d74e4f0aef5ef4c860eee1a1.svg/assets/splash/youtube/deezer_logo-... https://podomatic.com/assets/splash/youtube/deezer_logo-7c44cef3f0286ea5ddf6402352c773ed94c8b958d74e4f0aef5ef4c860eee1a1.svg — 200 — 627 B — 115 ms — h2https://podomatic.com/assets/splash/youtube/pfm-56476ac6179c8a1ed23a3fa4c424858f249832ffa0cf5197e84181312037575f.svg/assets/splash/youtube/pfm-56476ac6... https://podomatic.com/assets/splash/youtube/pfm-56476ac6179c8a1ed23a3fa4c424858f249832ffa0cf5197e84181312037575f.svg — 200 — 76.9 KiB — 131 ms — h2https://podomatic.com/assets/splash/step1-197f4ccf957697eff0bdc260351ba5227e27751c720c981603b6fe56005793d8.webp/assets/splash/step1-197f4ccf957697... https://podomatic.com/assets/splash/step1-197f4ccf957697eff0bdc260351ba5227e27751c720c981603b6fe56005793d8.webp — 200 — 1.2 KiB — 127 ms — h2https://podomatic.com/assets/splash/step2-c1e6703dfcc80b72cca0cc4f54d805e6560fccde329a13be6857417067845bf7.webp/assets/splash/step2-c1e6703dfcc80b... https://podomatic.com/assets/splash/step2-c1e6703dfcc80b72cca0cc4f54d805e6560fccde329a13be6857417067845bf7.webp — 200 — 1.6 KiB — 124 ms — h2https://podomatic.com/assets/splash/step3-6f22496ebaa33ebc3a4a926e24d56f13f89664dc11a65e3494cdb44aaeabfe0e.webp/assets/splash/step3-6f22496ebaa33e... https://podomatic.com/assets/splash/step3-6f22496ebaa33ebc3a4a926e24d56f13f89664dc11a65e3494cdb44aaeabfe0e.webp — 200 — 2.0 KiB — 111 ms — h2https://podomatic.com/assets/splash/step4-3e97bc312b0d872dbf07479cc206ffaa8addcd13a5ea2d5d15cff0a6b6c7074b.webp/assets/splash/step4-3e97bc312b0d87... https://podomatic.com/assets/splash/step4-3e97bc312b0d872dbf07479cc206ffaa8addcd13a5ea2d5d15cff0a6b6c7074b.webp — 200 — 3.1 KiB — 118 ms — h2https://podomatic.com/assets/splash/icon-itunes-277cbbfc579471ffa0141135ca50db29cb5f55bda4647a3487ba9176920af0f8.webp/assets/splash/icon-itunes-277cbbfc... https://podomatic.com/assets/splash/icon-itunes-277cbbfc579471ffa0141135ca50db29cb5f55bda4647a3487ba9176920af0f8.webp — 200 — 1.9 KiB — 30 ms — h2https://podomatic.com/assets/splash/icon-googleplay-0a434615cd3a16c7c73b5f60527c04a61ca866cfd1a33fc5540da92a5e41a842.webp/assets/splash/icon-googleplay-0a43... https://podomatic.com/assets/splash/icon-googleplay-0a434615cd3a16c7c73b5f60527c04a61ca866cfd1a33fc5540da92a5e41a842.webp — 200 — 1.8 KiB — 121 ms — h2https://podomatic.com/assets/splash/recording_apps-efc75302de3ee592ad4bb89f1eb090f8324ee6c2bf64044811f1a7627ba944c0.webp/assets/splash/recording_apps-efc75... https://podomatic.com/assets/splash/recording_apps-efc75302de3ee592ad4bb89f1eb090f8324ee6c2bf64044811f1a7627ba944c0.webp — 200 — 14.8 KiB — 35 ms — h2https://podomatic.com/assets/splash/listening_apps-03449eca37e09e4e77446ca41358200c99088f241f5adf252aa5f89d6f6f035a.webp/assets/splash/listening_apps-03449... https://podomatic.com/assets/splash/listening_apps-03449eca37e09e4e77446ca41358200c99088f241f5adf252aa5f89d6f6f035a.webp — 200 — 35.0 KiB — 40 ms — h2https://podomatic.com/assets/splash/stats-661308a3c2dbd1883c1702e11ff21e0ee5ea0672555e24c58ba1cc5e43e9416f.webp/assets/splash/stats-661308a3c2dbd1... https://podomatic.com/assets/splash/stats-661308a3c2dbd1883c1702e11ff21e0ee5ea0672555e24c58ba1cc5e43e9416f.webp — 200 — 21.8 KiB — 39 ms — h2https://podomatic.com/assets/splash/promotion-09eb1c1c464971400b8e893232a24512c50cb94b4c999c788d3f671508fe74b2.webp/assets/splash/promotion-09eb1c1c46... https://podomatic.com/assets/splash/promotion-09eb1c1c464971400b8e893232a24512c50cb94b4c999c788d3f671508fe74b2.webp — 200 — 18.1 KiB — 126 ms — h2https://podomatic.com/assets/splash/icon-facebook-1484873ab49d7abe7b5d561441a1ec5d237a00fe36a222bcaf33f42e1df39110.png/assets/splash/icon-facebook-148487... https://podomatic.com/assets/splash/icon-facebook-1484873ab49d7abe7b5d561441a1ec5d237a00fe36a222bcaf33f42e1df39110.png — 200 — 636 B — 25 ms — h2https://podomatic.com/assets/splash/icon-twitter-641dbcc227f32240b48943fcdc09ca106fc1f025bf7556aeea429b9a6c4ecb0d.png/assets/splash/icon-twitter-641dbcc... https://podomatic.com/assets/splash/icon-twitter-641dbcc227f32240b48943fcdc09ca106fc1f025bf7556aeea429b9a6c4ecb0d.png — 200 — 650 B — 118 ms — 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h2https://podomatic.com/assets/splash/icon-facebook@2x-f741d39ad589f0336b628425e0f77c3c105800cf09ea74d8f78d062697316aa4.png/assets/splash/icon-facebook@2x-f74... https://podomatic.com/assets/splash/icon-facebook@2x-f741d39ad589f0336b628425e0f77c3c105800cf09ea74d8f78d062697316aa4.png — 200 — 1.3 KiB — 306 ms — h2https://podomatic.com/assets/splash/icon-twitter@2x-e11d1d0a02be8e129304ccf21f0fec83a13959cce28ddc1ccacf450da012e03a.png/assets/splash/icon-twitter@2x-e11d... https://podomatic.com/assets/splash/icon-twitter@2x-e11d1d0a02be8e129304ccf21f0fec83a13959cce28ddc1ccacf450da012e03a.png — 200 — 1.5 KiB — 293 ms — h2https://podomatic.com/assets/iab_white@2x-74f155adf8fab8fc986460a3c18d78ddad1d7cdbefd7c7c30774f9e4943f3b2a.png/assets/iab_white@2x-74f155adf8fab8... https://podomatic.com/assets/iab_white@2x-74f155adf8fab8fc986460a3c18d78ddad1d7cdbefd7c7c30774f9e4943f3b2a.png — 200 — 3.1 KiB — 257 ms — h2https://podomatic.com/cdn-cgi/rum?/cdn-cgi/rum? https://podomatic.com/cdn-cgi/rum? — 204 — 139 B — 7 ms — h2https://podomatic.com/favicon.ico/favicon.ico https://podomatic.com/favicon.ico — 200 — 5.5 KiB — 17 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
60% of JavaScript execution is third-party
First-party Third-party 911ms · 191KB · $12/mo
Unattributable
Other
Costly
Execution 399ms
Transfer 0 KB
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 345ms
Transfer 160 KB
Unused 40%
Monthly Cost $5/mo
Google Analytics
Analytics
Optional
Execution 111ms
Transfer 21 KB
Monthly Cost $1/mo
static.cloudflareinsights.com
Other
Optional
Execution 55ms
Transfer 11 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 399ms and costs ~$5/month
  • Google Tag Manager adds 345ms and costs ~$5/month

60% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 399ms 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

Google Tag Manager takes 345ms 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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