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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
4
REVIEW
3
PASS
6
INFO
2

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

71
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

1.48 s

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

2.76 s

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

224 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.

1.58 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.

2.77 s

Page Load Progression

528 ms
1.1 s
1.6 s
2.1 s
2.6 s
3.2 s
3.7 s
4.2 s
Checks
15
6 PASS 3 REVIEW 4 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 (2.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
29 scripts, 802 KB unused
FIX
29 scripts, 802 KB unused
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4ir2t4/yv/l/...: 134 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4iSVg4/yu/l/...: 112 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4iuAe4/yX/l/...: 86 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4iKxu4/ym/l/...: 83 KB unused (95%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4/yU/r/DcrX2...: 76 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 802 KB
802 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.xx.fbcdn.net/rsrc.php/v4ir2t4/yv/l/en_GB-j/nKt83K8bFOY8FRnWc_RghZQt77v8QrxHexAv_03sE6NmmF4EGzH400h4j4SE1-LXf27jazmKZjbThLMusfBKLXXDY0YjxOowOmBw1JtOGoHMq0tyl4z5lrsY_Th14Xk8e9Sku4yAsukPWHDn88f8LPFIFZLBRhzS-4DyAC8lbkhBm8OT49U1YTT9NT_0Z9aRAvLoiQv4bLhpa--wr3g9q4pR78qLBHl-lElGzTHOl6Gkjq0OVeavkZc4HIHnCg4LyRJkkmesJZCcc2ZP1Mq8wypiAW_bfkF94AKekI-DNEnGBkPcwRUWAdmh5DEndjkC1LYw5WWi7I.js189 KB134 KB (71%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4iSVg4/yu/l/en_GB-j/JshSlPNui4y.js233 KB112 KB (48%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4iuAe4/yX/l/en_GB-j/eXuNl-hBb1X4tQwhPZghFa.js153 KB86 KB (56%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4iKxu4/ym/l/en_GB-j/ws7IXxtAyPQ.js87 KB83 KB (95%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yU/r/DcrX2w7W64E.js76 KB76 KB (100%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4izQ_4/y7/l/en_GB-j/AWX5t7ZgVWvzJ1cK8WBm1uWJukooR-9NveYAiEtFyMlqRi7mWBMSxEcAv3wM14GGu4PxbyW25xWkKVIPNHOqVL96B5bIoMrIaeQ_uK3aPyME2raTvLpEMiMqY.js97 KB72 KB (74%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yF/r/0gdcbeCC4AI.js57 KB53 KB (94%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4iDQn4/yH/l/en_GB-j/Yo3wuewMTur.js60 KB51 KB (85%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yV/r/ce-O1eEeZ9o.js73 KB38 KB (52%)3rd
https://static.xx.fbcdn.net/rsrc.php/v4iU7G4/yG/l/en_GB-j/l6avTjI3B2e.js50 KB37 KB (73%)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
38 resources · 2.0 MB · 802 KB savings available
FIX
38 resources · 2.0 MB · 802 KB savings available
Warning::
Page weight 990 KB over 1MB target
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~802 KB of savings available
Warning::
37 third-party resources (100% of weight)
Info::
2 resources over 200KB
38 resources · 2.0 MiB · 37 third-party 989.9 KiB over 1MB target
JavaScript 61% · 1.2 MiB
CSS 15% · 301.5 KiB
Font 10% · 208.4 KiB
Image 10% · 197.4 KiB
Document 4% · 74.2 KiB

~802.3 KiB of savings available

Remove unused JavaScript: 802.3 KiB
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.

C
Page Weight Budget
Action
2.0 MB transferred, 38 requests
REVIEW
2.0 MB transferred, 38 requests
Info::
Page weighs 7.2 MB (2.0 MB transferred)
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
CSS is 302 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 302 KB
Info::
Fonts are 208 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 208 KB
Info::
38 HTTP requests
Info::
Estimated 0.41 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
38 requests
0.41 g CO2 per page load
JavaScript 1.2 MiB 61%
CSS 301.5 KiB 15%
Fonts 208.4 KiB 10%
Images 177.4 KiB 9%
HTML 74.1 KiB 4%
Other 20.1 KiB 1%
Other 624 B 0%
Other 227 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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

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
JS Execution Cost
Action
1334ms total JS execution
REVIEW
1334ms total JS execution
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4/yV/r/ce-O1...: 652ms CPU time
Info::
https://static.xx.fbcdn.net/rsrc.php/v4iuAe4/yX/l/...: 216ms CPU time
Info::
https://www.facebook.com/: 212ms CPU time
Info::
Unattributable: 185ms CPU time
Info::
https://static.xx.fbcdn.net/rsrc.php/v4iSVg4/yu/l/...: 68ms CPU time
Warning::
Third-party scripts: 1334ms (100% of total)

Main Thread Breakdown

Script Evaluation 44% Other 24% Script Parsing & Compilation 16% Style & Layout 8% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://static.xx.fbcdn.net/rsrc.php/v4/yV/r/ce-O1eEeZ9o.js652ms584ms31ms3rd
https://static.xx.fbcdn.net/rsrc.php/v4iuAe4/yX/l/en_GB-j/eXuNl-hBb1X4tQwhPZghFa.js216ms13ms25ms3rd
https://www.facebook.com/212ms18ms0ms3rd
Unattributable185ms10ms0ms3rd
https://static.xx.fbcdn.net/rsrc.php/v4iSVg4/yu/l/en_GB-j/JshSlPNui4y.js68ms18ms45ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Warning::
https://static.xx.fbcdn.net/rsrc.php/y0/r/U45qBJmW... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
1 images 177 KB
0 oversized -0 KB
0 legacy format
1 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

A+
Font Loading
2 fonts (208 KB)
PASS
2 fonts (208 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

208 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 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.5 s LCP 2.8 shttps://static.xx.fbcdn.net/rsrc.php/yl/r/9AJbVCy4-G1.woff29AJbVCy4-G1.woff2 https://static.xx.fbcdn.net/rsrc.php/yl/r/9AJbVCy4-G1.woff2 — 29.4 KiB — 17 ms — font-display: swaphttps://static.xx.fbcdn.net/rsrc.php/yQ/r/-pkMfchyeAZ.woff2-pkMfchyeAZ.woff2 https://static.xx.fbcdn.net/rsrc.php/yQ/r/-pkMfchyeAZ.woff2 — 179.1 KiB — 21 ms — font-display: swap
9AJbVCy4-G1.woff2 woff2 swap
Size 29 KB
Load time 17 ms
Start 659 ms
Risk FOUT — text flashes from fallback to web font
-pkMfchyeAZ.woff2 woff2 swap
Size 179 KB
Load time 21 ms
Start 659 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 ~90 KB and ~180 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
38 requests over 2244ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.5 s LCP 2.8 shttps://fb.me// https://fb.me/ — 302 — 106 B — 121 ms — h3https://www.facebook.com/www.facebook.com/ https://www.facebook.com/ — 200 — 74.1 KiB — 480 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yo/l/0,cross/Ub3N3UJ4z_hSRcPYBIrKwmoii7yv5XgLOT9DWDYPz6DhfgQe914iiBfONMKn3YhINqU49pVNahkCkvOJ4AbSr5wE.cssstatic.xx.fbcdn.net/rsrc.php/v5/yo/... https://static.xx.fbcdn.net/rsrc.php/v5/yo/l/0,cross/Ub3N3UJ4z_hSRcPYBIrKwmoii7yv5XgLOT9DWDYPz6DhfgQe914iiBfONMKn3YhINqU49pVNahkCkvOJ4AbSr5wE.css — 200 — 270.6 KiB — 58 ms — h3data:text/css; charset=utf-8,.vrhKlE1b.vrhKlE1b%7Bposition%3Aabsolute%7D.hekj.hekj%7Btop%3A3em%7D%0Adata:text/css; charset=utf-8,.vrhKl... data:text/css; charset=utf-8,.vrhKlE1b.vrhKlE1b%7Bposition%3Aabsolute%7D.hekj.hekj%7Btop%3A3em%7D%0A — 200 — 0 B — 0 ms — datadata:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCnZhciBkYXRhRWxlbWVudD1…data:application/x-javascript; char... data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCnZhciBkYXRhRWxlbWVudD1… — 200 — 0 B — 0 ms — datadata:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCl9fYW5ub3RhdG9yPWZ1bmN…data:application/x-javascript; char... data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCl9fYW5ub3RhdG9yPWZ1bmN… — 200 — 0 B — 0 ms — datadata:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCl9idGxkcj17fSxfbm93SW5…data:application/x-javascript; char... data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCl9idGxkcj17fSxfbm93SW5… — 200 — 0 B — 0 ms — datadata:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCnZhciBkYXRhRWxlbWVudD1…data:application/x-javascript; char... data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCnZhciBkYXRhRWxlbWVudD1… — 200 — 0 B — 0 ms — datadata:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCihmdW5jdGlvbigpe2Z1bmN…data:application/x-javascript; char... data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCihmdW5jdGlvbigpe2Z1bmN… — 200 — 0 B — 0 ms — datahttps://www.facebook.com/ajax/qm/?__a=1&__user=0&__comet_req=15&jazoest=22216www.facebook.com/ajax/qm/?__a=1&__u... https://www.facebook.com/ajax/qm/?__a=1&__user=0&__comet_req=15&jazoest=22216 — 200 — 227 B — 174 ms — h3data:text/javascript;base64,cmVxdWlyZUxhenkoWyJTZXJ2ZXJKU1BheWxvYWRMaXN0ZW5lciJdLGZ1bmN0aW9uKG0pe20…data:text/javascript;base64,cmVxdWl... data:text/javascript;base64,cmVxdWlyZUxhenkoWyJTZXJ2ZXJKU1BheWxvYWRMaXN0ZW5lciJdLGZ1bmN0aW9uKG0pe20… — 200 — 0 B — 0 ms — datahttps://static.xx.fbcdn.net/rsrc.php/yl/r/9AJbVCy4-G1.woff2static.xx.fbcdn.net/rsrc.php/yl/r/9... https://static.xx.fbcdn.net/rsrc.php/yl/r/9AJbVCy4-G1.woff2 — 200 — 29.4 KiB — 17 ms — h3https://static.xx.fbcdn.net/rsrc.php/yQ/r/-pkMfchyeAZ.woff2static.xx.fbcdn.net/rsrc.php/yQ/r/-... https://static.xx.fbcdn.net/rsrc.php/yQ/r/-pkMfchyeAZ.woff2 — 200 — 179.1 KiB — 21 ms — h3data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCiJ1c2Ugc3RyaWN0Ijt2YXI…data:application/x-javascript; char... data:application/x-javascript; charset=utf-8;base64,Oy8qRkJfUEtHX0RFTElNKi8KCiJ1c2Ugc3RyaWN0Ijt2YXI… — 200 — 0 B — 0 ms — datahttps://static.xx.fbcdn.net/rsrc.php/v4/yV/r/ce-O1eEeZ9o.jsstatic.xx.fbcdn.net/rsrc.php/v4/yV/... https://static.xx.fbcdn.net/rsrc.php/v4/yV/r/ce-O1eEeZ9o.js — 200 — 72.6 KiB — 41 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4ir2t4/yv/l/en_GB-j/nKt83K8bFOY8FRnWc_RghZQt77v8QrxHexAv_03sE6NmmF4EGzH400h4j4SE1-LXf27jazmKZjbThLMusfBKLXXDY0YjxOowOmBw1JtOGoHMq0tyl4z5lrsY_Th14Xk8e9Sku4yAsukPWHDn88f8LPFIFZLBRhzS-4DyAC8lbkhBm8OT49U1YTT9NT_0Z9aRAvLoiQv4bLhpa--wr3g9q4pR78qLBHl-lElGzTHOl6Gkjq0OVeavkZc4HIHnCg4LyRJkkmesJZCcc2ZP1Mq8wypiAW_bfkF94AKekI-DNEnGBkPcwRUWAdmh5DEndjkC1LYw5WWi7I.jsstatic.xx.fbcdn.net/rsrc.php/v4ir2t... https://static.xx.fbcdn.net/rsrc.php/v4ir2t4/yv/l/en_GB-j/nKt83K8bFOY8FRnWc_RghZQt77v8QrxHexAv_03sE6NmmF4EGzH400h4j4SE1-LXf27jazmKZjbThLMusfBKLXXDY0YjxOowOmBw1JtOGoHMq0tyl4z5lrsY_Th14Xk8e9Sku4yAsukPWHDn88f8LPFIFZLBRhzS-4DyAC8lbkhBm8OT49U1YTT9NT_0Z9aRAvLoiQv4bLhpa--wr3g9q4pR78qLBHl-lElGzTHOl6Gkjq0OVeavkZc4HIHnCg4LyRJkkmesJZCcc2ZP1Mq8wypiAW_bfkF94AKekI-DNEnGBkPcwRUWAdmh5DEndjkC1LYw5WWi7I.js — 200 — 189.4 KiB — 68 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4iSVg4/yu/l/en_GB-j/JshSlPNui4y.jsstatic.xx.fbcdn.net/rsrc.php/v4iSVg... 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https://static.xx.fbcdn.net/rsrc.php/v4/yU/r/DcrX2w7W64E.js — 200 — 76.4 KiB — 48 ms — h3https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20564.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7631287231594900521&__req=1&__rev=1037799039&__s=hfrpz9%3Adu79d8%3Anfu68y&__spin_b=trunk&__spin_r=1037799039&__spin_t=1776797518&__user=0&dpr=2&jazoest=22216&lsd=AdR1mQOOtP1aQZ9THL9hyW4_JEo&ph=C3www.facebook.com/ajax/bz?__a=1&__cc... https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20564.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7631287231594900521&__req=1&__rev=1037799039&__s=hfrpz9%3Adu79d8%3Anfu68y&__spin_b=trunk&__spin_r=1037799039&__spin_t=1776797518&__user=0&dpr=2&jazoest=22216&lsd=AdR1mQOOtP1aQZ9THL9hyW4_JEo&ph=C3 — 200 — 225 B — 37 ms — h3https://www.instagram.com/accounts/xuserid/www.instagram.com/accounts/xuserid/ https://www.instagram.com/accounts/xuserid/ — 200 — 174 B — 145 ms — h3https://static.xx.fbcdn.net/rsrc.php/y0/r/U45qBJmWVHU.webpstatic.xx.fbcdn.net/rsrc.php/y0/r/U... https://static.xx.fbcdn.net/rsrc.php/y0/r/U45qBJmWVHU.webp — 200 — 177.4 KiB — 14 ms — h3https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20564.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7631287231594900521&__req=2&__rev=1037799039&__s=hfrpz9%3Adu79d8%3Anfu68y&__spin_b=trunk&__spin_r=1037799039&__spin_t=1776797518&__user=0&dpr=2&jazoest=22216&lsd=AdR1mQOOtP1aQZ9THL9hyW4_JEo&ph=C3&qpl_active_flow_ids=175125627%2C516759801www.facebook.com/ajax/bz?__a=1&__cc... https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20564.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7631287231594900521&__req=2&__rev=1037799039&__s=hfrpz9%3Adu79d8%3Anfu68y&__spin_b=trunk&__spin_r=1037799039&__spin_t=1776797518&__user=0&dpr=2&jazoest=22216&lsd=AdR1mQOOtP1aQZ9THL9hyW4_JEo&ph=C3&qpl_active_flow_ids=175125627%2C516759801 — 200 — 225 B — 34 ms — h3
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 1334ms · 532KB · $18/mo
static.xx.fbcdn.net
Other
Costly
Execution 652ms
Transfer 73 KB
Unused 52%
Monthly Cost $9/mo
static.xx.fbcdn.net
Other
Costly
Execution 216ms
Transfer 153 KB
Unused 56%
Monthly Cost $3/mo
www.facebook.com
Other
Costly
Execution 212ms
Transfer 74 KB
Monthly Cost $3/mo
Unattributable
Other
Optional
Execution 185ms
Transfer 0 KB
Monthly Cost $2/mo
static.xx.fbcdn.net
Other
Optional
Execution 68ms
Transfer 233 KB
Unused 48%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • static.xx.fbcdn.net adds 652ms and costs ~$9/month
  • static.xx.fbcdn.net adds 216ms and costs ~$3/month
  • www.facebook.com adds 212ms 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

static.xx.fbcdn.net takes 652ms 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 static.xx.fbcdn.net'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

static.xx.fbcdn.net takes 216ms 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

56% of static.xx.fbcdn.net'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

www.facebook.com takes 212ms 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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