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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
5
REVIEW
1
PASS
9
INFO
2

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

Mobile Desktop
45
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.

8.19 s

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

12.72 s

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

482 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.

8.19 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.

12.72 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 1 REVIEW 5 FIX
D
Third-Party Impact
Action
96% third-party, 0 ms blocking
FIX
96% third-party, 0 ms blocking
Warning::
Third-party code accounts for 96% of page weight (1.6 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
96%
First-party Third-party
F
JS Execution Cost
Action
4836ms total JS execution
FIX
4836ms total JS execution
Warning::
https://abs.twimg.com/responsive-web/client-web/ma...: 2556ms CPU time
Warning::
https://abs.twimg.com/responsive-web/client-web/ve...: 1319ms CPU time
Warning::
Unattributable: 462ms CPU time
Info::
https://abs.twimg.com/responsive-web/client-web/on...: 202ms CPU time
Info::
https://abs.twimg.com/responsive-web/client-web/sh...: 169ms CPU time
Warning::
Third-party scripts: 4708ms (97% of total)

Main Thread Breakdown

Script Evaluation 75% Other 10% Script Parsing & Compilation 9%
ScriptTotalScriptingParse/CompileParty
https://abs.twimg.com/responsive-web/client-web/main.52d81e4a.js2556ms2341ms87ms3rd
https://abs.twimg.com/responsive-web/client-web/vendor.7ef16aaa.js1319ms1072ms118ms3rd
Unattributable462ms14ms0ms3rd
https://abs.twimg.com/responsive-web/client-web/ondemand.s.a759306a.js202ms167ms2ms3rd
https://abs.twimg.com/responsive-web/client-web/shared~bundle.Routes~bundle.LoggedOutShell~ondemand.HoverCard~bundle.Delegate~bundle.TwitterBlue~ondemand.Com.39f4feca.js169ms150ms15ms3rd
https://x.com/128ms19ms43ms1st
F
JS Bundles
Action
50 scripts, 505 KB unused
FIX
50 scripts, 505 KB unused
Warning::
https://abs.twimg.com/responsive-web/client-web/ma...: 148 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://abs.twimg.com/responsive-web/client-web/ve...: 103 KB unused (30%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://abs.twimg.com/responsive-web/client-web/mo...: 75 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://accounts.google.com/gsi/client: 72 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://abs.twimg.com/responsive-web/client-web/i1...: 42 KB unused (23%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 505 KB
505 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://abs.twimg.com/responsive-web/client-web/main.52d81e4a.js287 KB148 KB (52%)✓3rd
https://abs.twimg.com/responsive-web/client-web/vendor.7ef16aaa.js346 KB103 KB (30%)✓3rd
https://abs.twimg.com/responsive-web/client-web/modules.audio.184d9faa.js76 KB75 KB (99%)✓3rd
https://accounts.google.com/gsi/client96 KB72 KB (75%)✓3rd
https://abs.twimg.com/responsive-web/client-web/i18n/en.f19ad19a.js180 KB42 KB (23%)✓3rd
https://abs.twimg.com/responsive-web/client-web/loader.AppModules.219d882a.js33 KB24 KB (73%)✓3rd
https://abs.twimg.com/responsive-web/client-web/modules.common.469fbc7a.js21 KB21 KB (98%)✓3rd
https://abs.twimg.com/responsive-web/client-web/shared~bundle.AudioSpaceDetail~bundle.AudioSpaceDiscovery~bundle.AudioSpacebarScreen~bundle.Birdwatch~bundle..2150637a.js23 KB20 KB (90%)✓3rd
https://abs.twimg.com/responsive-web/client-web/icons.6.6693286a.js7 KB—✓3rd
https://abs.twimg.com/responsive-web/client-web/icons.28.6b0fceaa.js7 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
69 resources · 1.7 MB · 505 KB savings available
FIX
69 resources · 1.7 MB · 505 KB savings available
Warning::
Page weight 687 KB over 1MB target
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~505 KB of savings available
Warning::
67 third-party resources (96% of weight)
Info::
2 resources over 200KB
69 resources · 1.7 MiB · 67 third-party 687.3 KiB over 1MB target
JavaScript 85% · 1.4 MiB
Font 10% · 171.2 KiB
Document 4% · 65.5 KiB
Other 1% · 17.9 KiB
Image 0% · 5.6 KiB
CSS 0% · 642 B

~504.9 KiB of savings available

Remove unused JavaScript: 504.9 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-cache, no-store, must-revalidate, pre-check=0, post-check=0
Info::
Last-Modified header present
Cache-Control

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

DirectiveValueMeaning
no-cache—Cache but always revalidate first
no-store—Never cache this response
must-revalidate—Must recheck with server after expiry
pre-check0
post-check0
C
Page Weight Budget
Action
1.7 MB transferred, 69 requests
REVIEW
1.7 MB transferred, 69 requests
Info::
Page weighs 5.3 MB (1.7 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::
69 HTTP requests
Info::
Estimated 0.35 g CO2 per page load
1.7 MB / 2.4 MB budget
1.7 MB transferred
69 requests
0.35 g CO2 per page load
JavaScript 1.4 MiB 85%
Fonts 171.2 KiB 10%
HTML 65.5 KiB 4%
Other 10.0 KiB 1%
Other 7.9 KiB 0%
Other 4.8 KiB 0%
Images 751 B 0%
CSS 642 B 0%
Other 0 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

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+
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 1 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
4 fonts (171 KB)
PASS
4 fonts (171 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

171 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 FCP 8.2 s LCP 12.7 shttps://abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2Chirp-Regular.80fda27a.... https://abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2 — 43.9 KiB — 147 ms — font-display: swaphttps://abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2Chirp-Bold.ebb56aba.woff2 https://abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2 — 44.2 KiB — 147 ms — font-display: swaphttps://abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2Chirp-Medium.f8e2739a.w... https://abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2 — 44.0 KiB — 124 ms — font-display: swaphttps://abs.twimg.com/fonts/v1/chirp-extended-heavy-web.woff2chirp-extended-heavy-we... https://abs.twimg.com/fonts/v1/chirp-extended-heavy-web.woff2 — 39.1 KiB — 34 ms — font-display: swap
Chirp-Regular.80fda27a.... woff2 swap
Size 44 KB
Load time 147 ms
Start 191 ms
Risk FOUT — text flashes from fallback to web font
Chirp-Bold.ebb56aba.woff2 woff2 swap
Size 44 KB
Load time 147 ms
Start 192 ms
Risk FOUT — text flashes from fallback to web font
Chirp-Medium.f8e2739a.w... woff2 swap
Size 44 KB
Load time 124 ms
Start 192 ms
Risk FOUT — text flashes from fallback to web font
chirp-extended-heavy-we... woff2 swap
Size 39 KB
Load time 34 ms
Start 1.5 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
21 hints, 0 missing preconnects
PASS
21 hints, 0 missing preconnects
Info::
Page uses 21 resource hint(s)

Current Resource Hints

preconnect
6
preload
9
dns-prefetch
6
prefetch
—

21 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
69 requests over 1862ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 8.2 s LCP 12.7 shttps://x.com// https://x.com/ — 200 — 65.5 KiB — 250 ms — h2https://abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2abs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2 — 200 — 43.9 KiB — 147 ms — h2https://abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2abs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2 — 200 — 44.2 KiB — 147 ms — h2https://abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2abs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2 — 200 — 44.0 KiB — 124 ms — h2https://abs.twimg.com/responsive-web/client-web/vendor.7ef16aaa.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/vendor.7ef16aaa.js — 200 — 345.9 KiB — 182 ms — h2https://abs.twimg.com/responsive-web/client-web/i18n/en.f19ad19a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/i18n/en.f19ad19a.js — 200 — 180.0 KiB — 190 ms — h2https://abs.twimg.com/responsive-web/client-web/main.52d81e4a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/main.52d81e4a.js — 200 — 287.3 KiB — 188 ms — h2https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutShell.d6e583ca.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutShell.d6e583ca.js — 200 — 20.5 KiB — 107 ms — h2https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutRoutes.5381a15a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutRoutes.5381a15a.js — 200 — 6.8 KiB — 110 ms — h2https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutHome.888e533a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutHome.888e533a.js — 200 — 7.1 KiB — 109 ms — h2https://x.com/manifest.json/manifest.json https://x.com/manifest.json — 200 — 7.9 KiB — 139 ms — h2https://abs-0.twimg.com/emoji/v2/svg/26a0.svgabs-0.twimg.com/emoji/v2/svg/26a0.s... https://abs-0.twimg.com/emoji/v2/svg/26a0.svg — 200 — 751 B — 39 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.8.fa9011ea.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.8.fa9011ea.js — 200 — 9.1 KiB — 56 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.15.b08c9c9a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.15.b08c9c9a.js — 200 — 6.6 KiB — 54 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.9.d0d9163a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.9.d0d9163a.js — 200 — 8.4 KiB — 39 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.22.a1035d5a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.22.a1035d5a.js — 200 — 8.5 KiB — 40 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.18.ead3a9da.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.18.ead3a9da.js — 200 — 7.3 KiB — 46 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.7.cac73cea.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.7.cac73cea.js — 200 — 8.3 KiB — 50 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.1.d09dd5aa.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.1.d09dd5aa.js — 200 — 6.0 KiB — 44 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.5.214c465a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.5.214c465a.js — 200 — 6.4 KiB — 56 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.24.9ebc84fa.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.24.9ebc84fa.js — 200 — 6.0 KiB — 58 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.4.a032591a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.4.a032591a.js — 200 — 7.2 KiB — 50 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.14.a210b5fa.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.14.a210b5fa.js — 200 — 6.0 KiB — 56 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.13.027fab8a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.13.027fab8a.js — 200 — 6.1 KiB — 54 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.25.b2e7018a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.25.b2e7018a.js — 200 — 5.7 KiB — 45 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.19.e81232ba.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.19.e81232ba.js — 200 — 7.3 KiB — 41 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.6.6693286a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.6.6693286a.js — 200 — 6.5 KiB — 60 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.3.45196c7a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.3.45196c7a.js — 200 — 6.7 KiB — 47 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.21.7be58aca.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.21.7be58aca.js — 200 — 5.4 KiB — 58 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.17.08424e9a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.17.08424e9a.js — 200 — 5.7 KiB — 62 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 8.2 s LCP 12.7 shttps://x.com// https://x.com/ — 200 — 65.5 KiB — 250 ms — h2https://abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2abs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2 — 200 — 43.9 KiB — 147 ms — h2https://abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2abs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2 — 200 — 44.2 KiB — 147 ms — h2https://abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2abs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2 — 200 — 44.0 KiB — 124 ms — h2https://abs.twimg.com/responsive-web/client-web/vendor.7ef16aaa.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/vendor.7ef16aaa.js — 200 — 345.9 KiB — 182 ms — h2https://abs.twimg.com/responsive-web/client-web/i18n/en.f19ad19a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/i18n/en.f19ad19a.js — 200 — 180.0 KiB — 190 ms — h2https://abs.twimg.com/responsive-web/client-web/main.52d81e4a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/main.52d81e4a.js — 200 — 287.3 KiB — 188 ms — h2https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutShell.d6e583ca.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutShell.d6e583ca.js — 200 — 20.5 KiB — 107 ms — h2https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutRoutes.5381a15a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutRoutes.5381a15a.js — 200 — 6.8 KiB — 110 ms — h2https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutHome.888e533a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/bundle.LoggedOutHome.888e533a.js — 200 — 7.1 KiB — 109 ms — h2https://x.com/manifest.json/manifest.json https://x.com/manifest.json — 200 — 7.9 KiB — 139 ms — h2https://abs-0.twimg.com/emoji/v2/svg/26a0.svgabs-0.twimg.com/emoji/v2/svg/26a0.s... https://abs-0.twimg.com/emoji/v2/svg/26a0.svg — 200 — 751 B — 39 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.8.fa9011ea.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.8.fa9011ea.js — 200 — 9.1 KiB — 56 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.15.b08c9c9a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.15.b08c9c9a.js — 200 — 6.6 KiB — 54 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.9.d0d9163a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.9.d0d9163a.js — 200 — 8.4 KiB — 39 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.22.a1035d5a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.22.a1035d5a.js — 200 — 8.5 KiB — 40 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.18.ead3a9da.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.18.ead3a9da.js — 200 — 7.3 KiB — 46 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.7.cac73cea.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.7.cac73cea.js — 200 — 8.3 KiB — 50 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.1.d09dd5aa.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.1.d09dd5aa.js — 200 — 6.0 KiB — 44 ms — h2https://abs.twimg.com/responsive-web/client-web/icons.5.214c465a.jsabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icons.5.214c465a.js — 200 — 6.4 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https://abs.twimg.com/favicons/twitter.3.ico — 200 — 1.0 KiB — 70 ms — h2https://abs.twimg.com/responsive-web/client-web/icon-default.522d363a.pngabs.twimg.com/responsive-web/client... https://abs.twimg.com/responsive-web/client-web/icon-default.522d363a.png — 200 — 3.8 KiB — 77 ms — h2https://api.x.com/1.1/hashflags.jsonapi.x.com/1.1/hashflags.json https://api.x.com/1.1/hashflags.json — 200 — 9.1 KiB — 140 ms — h2https://api.x.com/1.1/graphql/user_flow.jsonapi.x.com/1.1/graphql/user_flow.jso... https://api.x.com/1.1/graphql/user_flow.json — 200 — 322 B — 159 ms — h2https://api.x.com/1.1/onboarding/sso_init.jsonapi.x.com/1.1/onboarding/sso_init.j... https://api.x.com/1.1/onboarding/sso_init.json — 200 — 643 B — 132 ms — h2https://api.x.com/1.1/graphql/user_flow.jsonapi.x.com/1.1/graphql/user_flow.jso... https://api.x.com/1.1/graphql/user_flow.json — -1 — 0 B — 0 ms —
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
97% of JavaScript execution is third-party
First-party Third-party 4708ms · 685KB · €51/mo
abs.twimg.com
Other
Costly
Execution 2556ms
Transfer 287 KB
Unused 52%
Monthly Cost €28/mo
abs.twimg.com
Other
Costly
Execution 1319ms
Transfer 346 KB
Unused 30%
Monthly Cost €14/mo
Unattributable
Other
Costly
Execution 462ms
Transfer 0 KB
Monthly Cost €5/mo
abs.twimg.com
Other
Costly
Execution 202ms
Transfer 10 KB
Monthly Cost €2/mo
abs.twimg.com
Other
Optional
Execution 169ms
Transfer 41 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • abs.twimg.com adds 2556ms and costs ~€28/month
  • abs.twimg.com adds 1319ms and costs ~€14/month
  • Unattributable adds 462ms and costs ~€5/month
  • abs.twimg.com adds 202ms and costs ~€2/month

97% 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

abs.twimg.com takes 2556ms 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

52% of abs.twimg.com'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

abs.twimg.com takes 1319ms 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

Unattributable takes 462ms 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

abs.twimg.com takes 202ms 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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