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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
3
REVIEW
3
PASS
9
INFO
2

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

Mobile Desktop
67
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
81
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.
85
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.

3.79 s

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

5.81 s

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

153 ms

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

0.053

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

4.13 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.

7.85 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 3 REVIEW 3 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 (974.7 KiB of 975.1 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2004ms total JS execution
FIX
2004ms total JS execution
Warning::
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-rela...: 1191ms CPU time
Warning::
Unattributable: 338ms CPU time
Info::
https://www.quora.com/: 222ms CPU time
Info::
https://connect.facebook.net/en_US/bundle/sdk.js/: 131ms CPU time
Info::
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-rela...: 123ms CPU time
Warning::
Third-party scripts: 2004ms (100% of total)

Main Thread Breakdown

Script Evaluation 57% Script Parsing & Compilation 18% Other 17% Style & Layout 3%
ScriptTotalScriptingParse/CompileParty
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-27-53f0243b822027d4.webpack1191ms980ms163ms3rd
Unattributable338ms22ms0ms3rd
https://www.quora.com/222ms31ms27ms3rd
https://connect.facebook.net/en_US/bundle/sdk.js/131ms89ms37ms3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-vendor-27-cca0bf7cfab05ad0.webpack123ms42ms68ms3rd
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
5 images, 0 KB saveable
REVIEW
5 images, 0 KB saveable
Warning::
https://qsf.fs.quoracdn.net/-4-ans_frontend_assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://qsf.fs.quoracdn.net/-4-ans_frontend_assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
5 images 324 KB
0 oversized -0 KB
2 legacy format
2 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

B
JS Bundles
18 scripts, 102 KB unused
REVIEW
18 scripts, 102 KB unused
Warning::
https://connect.facebook.net/en_US/bundle/sdk.js/: 50 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-rela...: 29 KB unused (94%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-rela...: 24 KB unused (93%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 102 KB
102 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://connect.facebook.net/en_US/bundle/sdk.js/78 KB50 KB (64%)✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-icons-lowpri-27-b3e262ef653a5e59.webpack31 KB29 KB (94%)✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-secondary-27-f08aa9cc17a807af.webpack26 KB24 KB (93%)✓3rd
blob:https://challenges.cloudflare.com/a6f71240-3f1e-439e-aa87-aeeb8d2daa320 KB—✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-Modals-common-27-cfcc662dc399b4ab.webpack13 KB—✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-Mweb-27-84f4b3fb2e282f17.webpack0 KB—✓3rd
https://challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/api.js17 KB—✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-page-LoginPages-27-bc3088babbff1067.webpack21 KB—✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-27-0cd41664c26a66d5.webpack0 KB—✓3rd
https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-lib-broadcast-27-9b8540bb12cf20e9.webpack4 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
975 KB transferred, 35 requests
PASS
975 KB transferred, 35 requests
Info::
Page weighs 3.9 MB (975 KB transferred)
Info::
35 HTTP requests
Info::
Estimated 0.20 g CO2 per page load
975 KB / 2.4 MB budget
975 KB transferred
35 requests
0.20 g CO2 per page load
Images 324.4 KiB 33%
Other 294.3 KiB 30%
JavaScript 223.3 KiB 23%
HTML 120.7 KiB 12%
Other 8.3 KiB 1%
Other 4.1 KiB 0%
CSS 0 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+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
35 resources · 975 KB · 102 KB savings available
PASS
35 resources · 975 KB · 102 KB savings available
Info::
Within 1MB page-weight target
Got: 975 KB
Info::
~102 KB of savings available
Warning::
34 third-party resources (100% of weight)
Info::
1 resources over 200KB
35 resources · 975.1 KiB · 34 third-party Within 1MB page-weight target
Image 34% · 332.0 KiB
Other 31% · 298.7 KiB
JavaScript 23% · 223.3 KiB
Document 12% · 121.1 KiB
CSS 0% · 0 B

~102.4 KiB of savings available

Remove unused JavaScript: 102.4 KiB
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
Network Waterfall
35 requests over 4646ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 3.8 s LCP 5.8 shttps://quora.com// https://quora.com/ — 308 — 409 B — 1.1 s — http/1.1https://www.quora.com/www.quora.com/ https://www.quora.com/ — 200 — 24.4 KiB — 332 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-27-0cd41664c26a66d5.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-27-0cd41664c26a66d5.webpack — 200 — 0 B — 10 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-vendor-27-cca0bf7cfab05ad0.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-vendor-27-cca0bf7cfab05ad0.webpack — 200 — 0 B — 44 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-27-53f0243b822027d4.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-27-53f0243b822027d4.webpack — 200 — 0 B — 59 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-page-LoginPages-27-bc3088babbff1067.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-page-LoginPages-27-bc3088babbff1067.webpack — 200 — 21.0 KiB — 22 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-LoggedOut-27-f0b08b17e7bb0021.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-LoggedOut-27-f0b08b17e7bb0021.webpack — 200 — 10.6 KiB — 15 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-Mweb-27-84f4b3fb2e282f17.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-Mweb-27-84f4b3fb2e282f17.webpack — 200 — 0 B — 30 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-main.css-28-3da11ae7ae4b2734.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-main.css-28-3da11ae7ae4b2734.webpack — 200 — 0 B — 26 ms — h2https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicitchallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicit — 302 — 265 B — 205 ms — h3https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_home_mobile_top.png-26-53fae897dc02ce96.pngqsf.fs.quoracdn.net/-4-ans_frontend... https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_home_mobile_top.png-26-53fae897dc02ce96.png — 200 — 119.3 KiB — 39 ms — h2https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_mobile_bottom.png-26-e89babe95b59e319.pngqsf.fs.quoracdn.net/-4-ans_frontend... https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_mobile_bottom.png-26-e89babe95b59e319.png — 200 — 196.2 KiB — 37 ms — h2https://www.quora.com/ajax/receive_POSTwww.quora.com/ajax/receive_POST https://www.quora.com/ajax/receive_POST — 200 — 326 B — 250 ms — h2https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.noise2.png-26-232b425ba48b8dd3.pngqsf.fs.quoracdn.net/-4-ans_frontend... https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.noise2.png-26-232b425ba48b8dd3.png — 200 — 2.9 KiB — 11 ms — h3https://challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/api.jschallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/api.js — 200 — 17.4 KiB — 13 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/1v3ly/0x4AAAAAACs1vyrFg5qfMvyE/auto/fbE/new/flexible?lang=autochallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/1v3ly/0x4AAAAAACs1vyrFg5qfMvyE/auto/fbE/new/flexible?lang=auto — 200 — 96.3 KiB — 32 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/cmg/1challenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/cmg/1 — 200 — 208 B — 7 ms — h3https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-icons-lowpri-27-b3e262ef653a5e59.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-icons-lowpri-27-b3e262ef653a5e59.webpack — 200 — 31.1 KiB — 14 ms — h3https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.favicon-new.ico-26-e7e93fe0a7fbc991.icoqsf.fs.quoracdn.net/-4-ans_frontend... https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.favicon-new.ico-26-e7e93fe0a7fbc991.ico — 200 — 7.6 KiB — 20 ms — h3blob:https://challenges.cloudflare.com/a6f71240-3f1e-439e-aa87-aeeb8d2daa32challenges.cloudflare.com/a6f71240-... blob:https://challenges.cloudflare.com/a6f71240-3f1e-439e-aa87-aeeb8d2daa32 — -1 — 0 B — 0 ms — https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-lib-broadcast-27-9b8540bb12cf20e9.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-lib-broadcast-27-9b8540bb12cf20e9.webpack — 200 — 3.5 KiB — 11 ms — h3https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-Modals-common-27-cfcc662dc399b4ab.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-Modals-common-27-cfcc662dc399b4ab.webpack — 200 — 13.2 KiB — 13 ms — h3https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-secondary-27-f08aa9cc17a807af.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-secondary-27-f08aa9cc17a807af.webpack — 200 — 26.0 KiB — 12 ms — h3https://vi.ml314.com/get?eid=93060&tk=XdHaq35KsYPmAPxTo4ANIKy2WMRwai1noxdleKX6DIs3d&fp=vi.ml314.com/get?eid=93060&tk=XdHaq... https://vi.ml314.com/get?eid=93060&tk=XdHaq35KsYPmAPxTo4ANIKy2WMRwai1noxdleKX6DIs3d&fp= — 200 — 438 B — 42 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-Modals-signup-27-24a2d0bcb15a2d03.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-component-Modals-signup-27-24a2d0bcb15a2d03.webpack — 200 — 17.4 KiB — 11 ms — h3https://www.quora.com/graphql/gql_para_POST?q=facebookAutoLogin_Querywww.quora.com/graphql/gql_para_POST... https://www.quora.com/graphql/gql_para_POST?q=facebookAutoLogin_Query — 200 — 1.1 KiB — 260 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/flow/ov1/2665393735:1776359655:-yZ21BwzAphqzXrHgKcxOX77RkXAL9rAafXdddf9JJc/9ed4ef62bf47fe13/Uddg83fQ2mFKq9BkWQuFoGZ1ORPSWt5eIF.2eOQCwWM-1776360806-1.2.1.1-wCYYl9CmnDK2Pk6PQwIuyunxqbBuL3f_R.7C8mFCrr5PVS..diPOdN4fk8gqR_erchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/flow/ov1/2665393735:1776359655:-yZ21BwzAphqzXrHgKcxOX77RkXAL9rAafXdddf9JJc/9ed4ef62bf47fe13/Uddg83fQ2mFKq9BkWQuFoGZ1ORPSWt5eIF.2eOQCwWM-1776360806-1.2.1.1-wCYYl9CmnDK2Pk6PQwIuyunxqbBuL3f_R.7C8mFCrr5PVS..diPOdN4fk8gqR_er — 200 — 294.3 KiB — 134 ms — h3blob:https://challenges.cloudflare.com/4fcbc829-c40d-43ea-b48e-af4bcc61b820challenges.cloudflare.com/4fcbc829-... blob:https://challenges.cloudflare.com/4fcbc829-c40d-43ea-b48e-af4bcc61b820 — 200 — -1 B — 104 ms — blobhttps://connect.facebook.net/en_US/sdk.jsconnect.facebook.net/en_US/sdk.js https://connect.facebook.net/en_US/sdk.js — 200 — 5.1 KiB — 13 ms — h3https://connect.facebook.net/en_US/bundle/sdk.js/connect.facebook.net/en_US/bundle/s... https://connect.facebook.net/en_US/bundle/sdk.js/ — 200 — 77.7 KiB — 15 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 3.8 s LCP 5.8 shttps://quora.com// https://quora.com/ — 308 — 409 B — 1.1 s — http/1.1https://www.quora.com/www.quora.com/ https://www.quora.com/ — 200 — 24.4 KiB — 332 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-27-0cd41664c26a66d5.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-27-0cd41664c26a66d5.webpack — 200 — 0 B — 10 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-vendor-27-cca0bf7cfab05ad0.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-vendor-27-cca0bf7cfab05ad0.webpack — 200 — 0 B — 44 ms — h2https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-27-53f0243b822027d4.webpackqsbr.cf2.quoracdn.net/-4-ans_fronte... https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-common-27-53f0243b822027d4.webpack — 200 — 0 B — 59 ms — 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https://qsbr.cf2.quoracdn.net/-4-ans_frontend-relay-rspack-main.css-28-3da11ae7ae4b2734.webpack — 200 — 0 B — 26 ms — h2https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicitchallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicit — 302 — 265 B — 205 ms — h3https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_home_mobile_top.png-26-53fae897dc02ce96.pngqsf.fs.quoracdn.net/-4-ans_frontend... https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_home_mobile_top.png-26-53fae897dc02ce96.png — 200 — 119.3 KiB — 39 ms — h2https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_mobile_bottom.png-26-e89babe95b59e319.pngqsf.fs.quoracdn.net/-4-ans_frontend... https://qsf.fs.quoracdn.net/-4-ans_frontend_assets.images.logged_out_mobile_bottom.png-26-e89babe95b59e319.png — 200 — 196.2 KiB — 37 ms — h2https://www.quora.com/ajax/receive_POSTwww.quora.com/ajax/receive_POST 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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 2004ms · 102KB · $27/mo
qsbr.cf2.quoracdn.net
Other
Costly
Execution 1191ms
Transfer 0 KB
Monthly Cost $16/mo
Unattributable
Other
Costly
Execution 338ms
Transfer 0 KB
Monthly Cost $4/mo
www.quora.com
Other
Costly
Execution 222ms
Transfer 24 KB
Monthly Cost $3/mo
Facebook Pixel
Advertising
Optional
Execution 131ms
Transfer 78 KB
Unused 64%
Monthly Cost $2/mo
qsbr.cf2.quoracdn.net
Other
Optional
Execution 123ms
Transfer 0 KB
Monthly Cost $2/mo

These scripts may cost more than they're worth

  • qsbr.cf2.quoracdn.net adds 1191ms and costs ~$16/month
  • Unattributable adds 338ms and costs ~$4/month
  • www.quora.com adds 222ms and costs ~$3/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

qsbr.cf2.quoracdn.net takes 1191ms 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 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

www.quora.com takes 222ms 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

64% of Facebook Pixel'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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