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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
85
GRADE
B
FIX
4
REVIEW
6
PASS
9
INFO
3

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

Mobile Desktop
78
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.

1.40 s

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

2.90 s

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

102 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.

1.42 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.

2.90 s

Page Load Progression

511 ms
1.0 s
1.5 s
2.0 s
2.6 s
3.1 s
3.6 s
4.1 s
Checks
22
9 PASS 6 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 (2.1 MiB of 2.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
29 scripts, 860 KB unused
FIX
29 scripts, 860 KB unused
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4iFbC4/ya/l/...: 184 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4iLSO4/y2/l/...: 103 KB unused (95%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4i_054/yq/l/...: 93 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4i-zr4/yY/l/...: 84 KB unused (91%)
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: 860 KB
860 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.xx.fbcdn.net/rsrc.php/v4iFbC4/ya/l/en_US-j/x3v8UspWx-c-k8LMvdap7sSMdaQqgTEV2WJ3XzkWlmd_v_kkAv_-wGQgXdYivvCwsHHKy1uKLQ_0jLSF6kN-2GoifAozIMNFBkkw1JtOGoHMq0nyQSP3ZLAfTu4yAsukPWHDsVjQqltBeBhusk2amyJhKMh2otzgdunJl3g9q4pR78qL69VqNNp4Gm1BHl-lElGzTH4Lah-t55E7mOl6Gkjq0OVeavkZc4HIHnCJZCcc2ZP1Mq8wypiAW_bfk-AMUuK2ufRhAdmh5DEndjkC1LYw5WWi7IP1HIUYBqZ4h.js290 KB184 KB (64%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4iLSO4/y2/l/en_US-j/mmGkYkInWJv.js108 KB103 KB (95%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4i_054/yq/l/en_US-j/kM6t6qdJVbH.js202 KB93 KB (46%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4i-zr4/yY/l/en_US-j/oLKy3Lvmzu4.js93 KB84 KB (91%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yU/r/DcrX2w7W64E.js76 KB76 KB (100%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4ivN34/y8/l/en_US-j/6b8g-QgQ3_YC9j9W8O4uJ3WJukooR-9NvNR8emwuUeOHCrtbZ7I8rJDRi7mWBMSxEcjMVGcktGGRp72OqDwSuA8Ya7eSNpDNxgKVIPNHOqVL96GSBvj8_FEnWhlOg4ZYKX0hePZ2GqKu-kUqm8HXN6FrYZ.js94 KB68 KB (72%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4iZ9D4/yt/l/en_US-j/fstkMPXuEgz.js96 KB65 KB (68%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4iA944/yI/l/en_US-j/bFIe4tuld2E.js65 KB48 KB (74%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4idc84/y7/l/en_US-j/QHB9ZRdvqT_.js45 KB42 KB (95%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yh/r/L1turxb8Ua5.js74 KB39 KB (53%)✓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
39 resources · 2.1 MB · 860 KB savings available
FIX
39 resources · 2.1 MB · 860 KB savings available
Warning::
Page weight 2.1 MB exceeds 1 MB target by 1.1 MB
Got: 2.1 MB Expected: ≤ 1 MB
Info::
~860 KB of savings available
Warning::
38 third-party resources (100% of weight)
Info::
3 resources over 200KB
39 resources · 2.1 MiB · 38 third-party 1.1 MiB over 1MB target
JavaScript 61% · 1.3 MiB
CSS 15% · 310.6 KiB
Image 10% · 218.6 KiB
Font 10% · 208.4 KiB
Document 4% · 75.3 KiB

~859.7 KiB of savings available

Remove unused JavaScript: 859.7 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
2.1 MB transferred, 39 requests
REVIEW
2.1 MB transferred, 39 requests
Info::
Page weighs 7.4 MB (2.1 MB transferred)
Warning::
JavaScript is 1.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.3 MB
Info::
CSS is 311 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 311 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::
39 HTTP requests
Info::
Estimated 0.43 g CO2 per page load
2.1 MB / 2.4 MB budget
2.1 MB transferred
39 requests
0.43 g CO2 per page load
JavaScript 1.3 MiB 61%
CSS 310.6 KiB 15%
Fonts 208.4 KiB 10%
Images 198.6 KiB 9%
HTML 75.2 KiB 4%
Other 20.1 KiB 1%
Other 847 B 0%
Other 225 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
1130ms total JS execution
REVIEW
1130ms total JS execution
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4/yh/r/L1tur...: 473ms CPU time
Warning::
Unattributable: 316ms CPU time
Info::
https://static.xx.fbcdn.net/rsrc.php/v4iFbC4/ya/l/...: 191ms CPU time
Info::
https://www.facebook.com/: 150ms CPU time
Warning::
Third-party scripts: 815ms (72% of total)

Main Thread Breakdown

Script Evaluation 53% Other 20% Script Parsing & Compilation 15% Style & Layout 8% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://static.xx.fbcdn.net/rsrc.php/v4/yh/r/L1turxb8Ua5.js473ms435ms22ms3rd
Unattributable316ms214ms0ms1st
https://static.xx.fbcdn.net/rsrc.php/v4iFbC4/ya/l/en_US-j/x3v8UspWx-c-k8LMvdap7sSMdaQqgTEV2WJ3XzkWlmd_v_kkAv_-wGQgXdYivvCwsHHKy1uKLQ_0jLSF6kN-2GoifAozIMNFBkkw1JtOGoHMq0nyQSP3ZLAfTu4yAsukPWHDsVjQqltBeBhusk2amyJhKMh2otzgdunJl3g9q4pR78qL69VqNNp4Gm1BHl-lElGzTH4Lah-t55E7mOl6Gkjq0OVeavkZc4HIHnCJZCcc2ZP1Mq8wypiAW_bfk-AMUuK2ufRhAdmh5DEndjkC1LYw5WWi7IP1HIUYBqZ4h.js191ms15ms39ms3rd
https://www.facebook.com/150ms11ms0ms3rd
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
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
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Warning::
https://static.xx.fbcdn.net/rsrc.php/yb/r/HpEiFYDu... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 199 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 1.0 s 2.0 s 3.0 s FCP 1.4 s LCP 2.9 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 — 11 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 — 27 ms — font-display: swap
9AJbVCy4-G1.woff2 woff2 swap
Size 29 KB
Load time 11 ms
Start 535 ms
Risk FOUT — text flashes from fallback to web font
-pkMfchyeAZ.woff2 woff2 swap
Size 179 KB
Load time 27 ms
Start 535 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
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
Network Waterfall
39 requests over 2082ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.4 s LCP 2.9 shttps://facebook.com// https://facebook.com/ — 301 — 102 B — 72 ms — h3https://www.facebook.com/www.facebook.com/ https://www.facebook.com/ — 200 — 75.2 KiB — 418 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yw/l/0,cross/6M8CLqSinCY0-ET_2exAhl7TF2-QXH5TPT9DWDYPz6DhfgQe914iiBftBfxLC70eJBONMKn3YhINqU49pVNahkCkvx2I9b7Pb8K.cssstatic.xx.fbcdn.net/rsrc.php/v5/yw/... https://static.xx.fbcdn.net/rsrc.php/v5/yw/l/0,cross/6M8CLqSinCY0-ET_2exAhl7TF2-QXH5TPT9DWDYPz6DhfgQe914iiBftBfxLC70eJBONMKn3YhINqU49pVNahkCkvx2I9b7Pb8K.css — 200 — 277.6 KiB — 37 ms — h3data:text/css; charset=utf-8,.nrhKlDYX.nrhKlDYX%7Bposition%3Aabsolute%7D.denb.denb%7Btop%3A3em%7D%0Adata:text/css; charset=utf-8,.nrhKl... data:text/css; charset=utf-8,.nrhKlDYX.nrhKlDYX%7Bposition%3Aabsolute%7D.denb.denb%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=22213www.facebook.com/ajax/qm/?__a=1&__u... https://www.facebook.com/ajax/qm/?__a=1&__user=0&__comet_req=15&jazoest=22213 — 200 — 225 B — 66 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/yJ/r/x19hlwGXFCC.webpstatic.xx.fbcdn.net/rsrc.php/yJ/r/x... https://static.xx.fbcdn.net/rsrc.php/yJ/r/x19hlwGXFCC.webp — 200 — 9.4 KiB — 9 ms — h3https://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 — 11 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 — 27 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/yh/r/L1turxb8Ua5.jsstatic.xx.fbcdn.net/rsrc.php/v4/yh/... https://static.xx.fbcdn.net/rsrc.php/v4/yh/r/L1turxb8Ua5.js — 200 — 74.2 KiB — 42 ms — 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h3https://static.xx.fbcdn.net/rsrc.php/v4/yL/r/xSkza5ra-Ks.jsstatic.xx.fbcdn.net/rsrc.php/v4/yL/... https://static.xx.fbcdn.net/rsrc.php/v4/yL/r/xSkza5ra-Ks.js — 200 — 11.0 KiB — 10 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4i-zr4/yY/l/en_US-j/oLKy3Lvmzu4.jsstatic.xx.fbcdn.net/rsrc.php/v4i-zr... https://static.xx.fbcdn.net/rsrc.php/v4i-zr4/yY/l/en_US-j/oLKy3Lvmzu4.js — 200 — 92.5 KiB — 28 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yD/r/-yEwuPKSfI5.jsstatic.xx.fbcdn.net/rsrc.php/v4/yD/... https://static.xx.fbcdn.net/rsrc.php/v4/yD/r/-yEwuPKSfI5.js — 200 — 462 B — 25 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yU/r/DcrX2w7W64E.jsstatic.xx.fbcdn.net/rsrc.php/v4/yU/... https://static.xx.fbcdn.net/rsrc.php/v4/yU/r/DcrX2w7W64E.js — 200 — 76.4 KiB — 58 ms — h3https://static.xx.fbcdn.net/rsrc.php/y1/r/ay1hV6OlegS.icostatic.xx.fbcdn.net/rsrc.php/y1/r/a... https://static.xx.fbcdn.net/rsrc.php/y1/r/ay1hV6OlegS.ico — 200 — 20.0 KiB — 17 ms — h3https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20643.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7660431687366009957&__req=1&__rev=1042890719&__s=9w6cn2%3Ap43lfa%3A7e1tpb&__spin_b=trunk&__spin_r=1042890719&__spin_t=1783583240&__user=0&dpr=2&jazoest=22213&lsd=AdR6gKR6bLITYyP2VMH8Tlsqx00&ph=C3www.facebook.com/ajax/bz?__a=1&__cc... https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20643.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7660431687366009957&__req=1&__rev=1042890719&__s=9w6cn2%3Ap43lfa%3A7e1tpb&__spin_b=trunk&__spin_r=1042890719&__spin_t=1783583240&__user=0&dpr=2&jazoest=22213&lsd=AdR6gKR6bLITYyP2VMH8Tlsqx00&ph=C3 — 200 — 223 B — 85 ms — h3https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20643.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7660431687366009957&__req=2&__rev=1042890719&__s=9w6cn2%3Ap43lfa%3A7e1tpb&__spin_b=trunk&__spin_r=1042890719&__spin_t=1783583240&__user=0&dpr=2&jazoest=22213&lsd=AdR6gKR6bLITYyP2VMH8Tlsqx00&ph=C3www.facebook.com/ajax/bz?__a=1&__cc... https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20643.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7660431687366009957&__req=2&__rev=1042890719&__s=9w6cn2%3Ap43lfa%3A7e1tpb&__spin_b=trunk&__spin_r=1042890719&__spin_t=1783583240&__user=0&dpr=2&jazoest=22213&lsd=AdR6gKR6bLITYyP2VMH8Tlsqx00&ph=C3 — 200 — 228 B — 67 ms — h3https://www.instagram.com/accounts/xuserid/www.instagram.com/accounts/xuserid/ https://www.instagram.com/accounts/xuserid/ — 200 — 173 B — 87 ms — h3https://static.xx.fbcdn.net/rsrc.php/yb/r/HpEiFYDux5j.webpstatic.xx.fbcdn.net/rsrc.php/yb/r/H... https://static.xx.fbcdn.net/rsrc.php/yb/r/HpEiFYDux5j.webp — 200 — 189.1 KiB — 15 ms — h3https://www.facebook.com/ajax/bz?__a=1&__ccg=EXCELLENT&__comet_req=15&__hs=20643.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7660431687366009957&__req=3&__rev=1042890719&__s=9w6cn2%3Ap43lfa%3A7e1tpb&__spin_b=trunk&__spin_r=1042890719&__spin_t=1783583240&__user=0&dpr=2&jazoest=22213&lsd=AdR6gKR6bLITYyP2VMH8Tlsqx00&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=20643.HYP%3Acomet_loggedout_pkg.2.1...0&__hsi=7660431687366009957&__req=3&__rev=1042890719&__s=9w6cn2%3Ap43lfa%3A7e1tpb&__spin_b=trunk&__spin_r=1042890719&__spin_t=1783583240&__user=0&dpr=2&jazoest=22213&lsd=AdR6gKR6bLITYyP2VMH8Tlsqx00&ph=C3&qpl_active_flow_ids=175125627%2C516759801 — 200 — 223 B — 78 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
72% of JavaScript execution is third-party
First-party Third-party 815ms · 439KB · $11/mo
static.xx.fbcdn.net
Other
Costly
Execution 473ms
Transfer 74 KB
Unused 53%
Monthly Cost $6/mo
static.xx.fbcdn.net
Other
Optional
Execution 191ms
Transfer 290 KB
Unused 64%
Monthly Cost $3/mo
www.facebook.com
Other
Optional
Execution 150ms
Transfer 75 KB
Monthly Cost $2/mo

These scripts may cost more than they're worth

  • static.xx.fbcdn.net adds 473ms and costs ~$6/month

72% 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 473ms 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

53% 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

64% 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

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-06-10 — 2026-07-07)

LCP (p75)

624 ms

95% good

INP (p75)

25 ms

95% good

CLS (p75)

0.000

100% good

FCP (p75)

656 ms

TTFB (p75)

451 ms

This origin passes Core Web Vitals assessment
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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