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https://messenger.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
5
PASS
7
INFO
2

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

66
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
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.

3.78 s

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

10.72 s

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

0 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.

3.78 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.

10.72 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
7 PASS 5 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 (1.6 MiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
41 resources · 1.6 MB · 182 KB savings available
FIX
41 resources · 1.6 MB · 182 KB savings available
Warning::
Page weight 643 KB over 1MB target
Got: 1.6 MB Expected: ≤ 1 MB
Info::
~182 KB of savings available
Warning::
40 third-party resources (100% of weight)
Info::
1 resources over 200KB
41 resources · 1.6 MiB · 40 third-party 643.0 KiB over 1MB target
Image 72% · 1.2 MiB
JavaScript 22% · 370.3 KiB
Font 3% · 49.7 KiB
Document 2% · 25.7 KiB
CSS 1% · 18.9 KiB
Other 0% · 2.7 KiB

~181.9 KiB of savings available

Remove unused JavaScript: 181.9 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
1.6 MB transferred, 41 requests
REVIEW
1.6 MB transferred, 41 requests
Info::
Page weighs 2.7 MB (1.6 MB transferred)
Warning::
Images are 1.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.1 MB
Info::
41 HTTP requests
Info::
Estimated 0.34 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
41 requests
0.34 g CO2 per page load
Images 1.1 MiB 68%
JavaScript 370.3 KiB 22%
Other 66.5 KiB 4%
Fonts 49.7 KiB 3%
HTML 25.1 KiB 2%
CSS 18.9 KiB 1%
Other 2.7 KiB 0%
Other 342 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

C
Image Optimization
Action
7 images, 0 KB saveable
REVIEW
7 images, 0 KB saveable
Warning::
https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://scontent-cdg4-1.xx.fbcdn.net/v/t39.8562-6/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
7 images 1.1 MB
0 oversized -0 KB
7 legacy format
3 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

B
JS Execution Cost
785ms total JS execution
REVIEW
785ms total JS execution
Warning::
Unattributable: 292ms CPU time
Info::
https://www.messenger.com/: 246ms CPU time
Info::
https://static.xx.fbcdn.net/rsrc.php/v4/y-/r/aJd-U...: 172ms CPU time
Info::
https://static.xx.fbcdn.net/rsrc.php/v4iLl54/y2/l/...: 76ms CPU time
Warning::
Third-party scripts: 785ms (100% of total)

Main Thread Breakdown

Script Evaluation 39% Other 34% Script Parsing & Compilation 14% Style & Layout 9%
ScriptTotalScriptingParse/CompileParty
Unattributable292ms6ms0ms3rd
https://www.messenger.com/246ms81ms15ms3rd
https://static.xx.fbcdn.net/rsrc.php/v4/y-/r/aJd-UIzxCh_.js172ms133ms21ms3rd
https://static.xx.fbcdn.net/rsrc.php/v4iLl54/y2/l/en_GB-j/NFJZP8sFn-q.js76ms68ms3ms3rd
C
JS Bundles
Action
21 scripts, 182 KB unused
REVIEW
21 scripts, 182 KB unused
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4/y4/r/xQhBU...: 63 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4iczx4/y9/l/...: 46 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4/ye/r/7tSaW...: 44 KB unused (91%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.xx.fbcdn.net/rsrc.php/v4/y-/r/aJd-U...: 29 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 182 KB
182 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.xx.fbcdn.net/rsrc.php/v4/y4/r/xQhBU_nB_Ud.js64 KB63 KB (100%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4iczx4/y9/l/en_GB-j/-lK9auC6Pja.js68 KB46 KB (67%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/ye/r/7tSaWvpNQfs.js48 KB44 KB (91%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/y-/r/aJd-UIzxCh_.js67 KB29 KB (43%)✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/y9/r/JuUBG2JKKrG.js2 KB—✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yt/r/NiZEL-gBXwp.js0 KB—✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yb/r/8wypiAW_bfk.js0 KB—✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yg/r/2NHo_dWlFng.js2 KB—✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yB/r/oGrND3F5GfM.js7 KB—✓3rd
https://static.xx.fbcdn.net/rsrc.php/v4/yr/r/wmuNmgIiNmF.js8 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

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+
Font Loading
2 fonts (50 KB)
PASS
2 fonts (50 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

50 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.8 s LCP 10.7 shttps://static.xx.fbcdn.net/rsrc.php/yX/r/KLj_xKLeqTV.woff2KLj_xKLeqTV.woff2 https://static.xx.fbcdn.net/rsrc.php/yX/r/KLj_xKLeqTV.woff2 — 25.2 KiB — 23 ms — font-display: swaphttps://static.xx.fbcdn.net/rsrc.php/yZ/r/mBPexExW31x.woff2mBPexExW31x.woff2 https://static.xx.fbcdn.net/rsrc.php/yZ/r/mBPexExW31x.woff2 — 24.5 KiB — 23 ms — font-display: swap
KLj_xKLeqTV.woff2 woff2 swap
Size 25 KB
Load time 23 ms
Start 649 ms
Risk FOUT — text flashes from fallback to web font
mBPexExW31x.woff2 woff2 swap
Size 25 KB
Load time 23 ms
Start 650 ms
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
36 hints, 0 missing preconnects
PASS
36 hints, 0 missing preconnects
Info::
Page uses 36 resource hint(s)

Current Resource Hints

preconnect
—
preload
+26
36
dns-prefetch
—
prefetch
—

36 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
Network Waterfall
41 requests over 1934ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.8 s LCP 10.7 shttps://messenger.com// https://messenger.com/ — 301 — 312 B — 167 ms — h2https://www.messenger.com/www.messenger.com/ https://www.messenger.com/ — 200 — 25.1 KiB — 330 ms — h2https://static.xx.fbcdn.net/rsrc.php/v5/yA/l/0,cross/hmMlb7p4_hH.cssstatic.xx.fbcdn.net/rsrc.php/v5/yA/... https://static.xx.fbcdn.net/rsrc.php/v5/yA/l/0,cross/hmMlb7p4_hH.css — 200 — 9.9 KiB — 83 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yN/l/0,cross/4i3Kw-NYHJs.cssstatic.xx.fbcdn.net/rsrc.php/v5/yN/... https://static.xx.fbcdn.net/rsrc.php/v5/yN/l/0,cross/4i3Kw-NYHJs.css — 200 — 4.5 KiB — 66 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/ya/l/0,cross/Np-BNfybzho.cssstatic.xx.fbcdn.net/rsrc.php/v5/ya/... https://static.xx.fbcdn.net/rsrc.php/v5/ya/l/0,cross/Np-BNfybzho.css — 200 — 2.7 KiB — 84 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yA/l/0,cross/4RSybW9OrBc.cssstatic.xx.fbcdn.net/rsrc.php/v5/yA/... https://static.xx.fbcdn.net/rsrc.php/v5/yA/l/0,cross/4RSybW9OrBc.css — 200 — 1.2 KiB — 85 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yH/l/0,cross/VETnGtFhE0w.cssstatic.xx.fbcdn.net/rsrc.php/v5/yH/... https://static.xx.fbcdn.net/rsrc.php/v5/yH/l/0,cross/VETnGtFhE0w.css — 200 — 590 B — 86 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/y-/r/aJd-UIzxCh_.jsstatic.xx.fbcdn.net/rsrc.php/v4/y-/... https://static.xx.fbcdn.net/rsrc.php/v4/y-/r/aJd-UIzxCh_.js — 200 — 67.2 KiB — 97 ms — h3https://scontent-cdg4-1.xx.fbcdn.net/v/t39.8562-6/475210330_598195142840489_9172482348551739153_n.png?_nc_cat=104&ccb=1-7&_nc_sid=f537c7&_nc_ohc=BK9F4jeE3_AQ7kNvwFSDokp&_nc_oc=AdpZ-vWWAhm1StMbSmQKN2KoKHc5b1caWqJQNoH6amp6Ow9cU46YEWSA9LczIf6PnJMlhiv2dywcX7K2VzXbFlbZ&_nc_zt=14&_nc_ht=scontent-cdg4-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af3YINVRvqzDoxLcZcoTTx3ovrzB0wUjXXhRmvF_dXd4Hw&oe=69EDCA18scontent-cdg4-1.xx.fbcdn.net/v/t39.... https://scontent-cdg4-1.xx.fbcdn.net/v/t39.8562-6/475210330_598195142840489_9172482348551739153_n.png?_nc_cat=104&ccb=1-7&_nc_sid=f537c7&_nc_ohc=BK9F4jeE3_AQ7kNvwFSDokp&_nc_oc=AdpZ-vWWAhm1StMbSmQKN2KoKHc5b1caWqJQNoH6amp6Ow9cU46YEWSA9LczIf6PnJMlhiv2dywcX7K2VzXbFlbZ&_nc_zt=14&_nc_ht=scontent-cdg4-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af3YINVRvqzDoxLcZcoTTx3ovrzB0wUjXXhRmvF_dXd4Hw&oe=69EDCA18 — 200 — 2.0 KiB — 61 ms — h3https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/44751398_444218965982796_2611412198404128768_n.svg?_nc_cat=105&ccb=1-7&_nc_sid=f537c7&_nc_ohc=McSC6V7EA88Q7kNvwHmmJcI&_nc_oc=AdrlGLBeVryEYqJcnoZdwFnDu2rLXNZxWsYJEDN2-w_HIqHV1eZxcKQEWnOQf2P0DsfA7045DHw_MWeOaul1rCkd&_nc_zt=14&_nc_ht=scontent-cdg6-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af0FwV0aj7iJWngs475Qqlo5o6aCPDkOYY8dWaNKK_whcQ&oe=69EDBACAscontent-cdg6-1.xx.fbcdn.net/v/t39.... https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/44751398_444218965982796_2611412198404128768_n.svg?_nc_cat=105&ccb=1-7&_nc_sid=f537c7&_nc_ohc=McSC6V7EA88Q7kNvwHmmJcI&_nc_oc=AdrlGLBeVryEYqJcnoZdwFnDu2rLXNZxWsYJEDN2-w_HIqHV1eZxcKQEWnOQf2P0DsfA7045DHw_MWeOaul1rCkd&_nc_zt=14&_nc_ht=scontent-cdg6-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af0FwV0aj7iJWngs475Qqlo5o6aCPDkOYY8dWaNKK_whcQ&oe=69EDBACA — 200 — 9.1 KiB — 66 ms — h3https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/119597221_2801552506611915_4465041091818364564_n.svg?_nc_cat=106&ccb=1-7&_nc_sid=f537c7&_nc_ohc=2sjlfyWW5YUQ7kNvwGXpI42&_nc_oc=AdpUYwUc2DO5y0RhZIxa8qdMOV6vTq5Posx98TFtn3vqejmIIPudhCSyUu8KZaaoyNtpm_JvJdQhyHissTJI7eRn&_nc_zt=14&_nc_ht=scontent-cdg6-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af1xAg9N4j0HUpKi4ssa6Qee8gXY0-fosasFwKPRhYq3NQ&oe=69EDB235scontent-cdg6-1.xx.fbcdn.net/v/t39.... https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/119597221_2801552506611915_4465041091818364564_n.svg?_nc_cat=106&ccb=1-7&_nc_sid=f537c7&_nc_ohc=2sjlfyWW5YUQ7kNvwGXpI42&_nc_oc=AdpUYwUc2DO5y0RhZIxa8qdMOV6vTq5Posx98TFtn3vqejmIIPudhCSyUu8KZaaoyNtpm_JvJdQhyHissTJI7eRn&_nc_zt=14&_nc_ht=scontent-cdg6-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af1xAg9N4j0HUpKi4ssa6Qee8gXY0-fosasFwKPRhYq3NQ&oe=69EDB235 — 200 — 10.6 KiB — 23 ms — h3https://scontent-cdg4-2.xx.fbcdn.net/v/t39.8562-6/464011436_1233390227803223_6947769045993728855_n.png?_nc_cat=109&ccb=1-7&_nc_sid=f537c7&_nc_ohc=ucRkyunlRxYQ7kNvwHAqJeK&_nc_oc=AdoNSwYSg3Cay_MCDW8-NmIeSKeXg5SoO4Mh3kYTqStWZOJh8QKnw4iBXEQVVE8VHfJ0v6q0If42L8X0IkCdMVM4&_nc_zt=14&_nc_ht=scontent-cdg4-2.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af0YEyGPcJ6AmTwXWaYtMsF-ZgTCrpMd1NgjQJrz0xqLYg&oe=69EDB3C0scontent-cdg4-2.xx.fbcdn.net/v/t39.... https://scontent-cdg4-2.xx.fbcdn.net/v/t39.8562-6/464011436_1233390227803223_6947769045993728855_n.png?_nc_cat=109&ccb=1-7&_nc_sid=f537c7&_nc_ohc=ucRkyunlRxYQ7kNvwHAqJeK&_nc_oc=AdoNSwYSg3Cay_MCDW8-NmIeSKeXg5SoO4Mh3kYTqStWZOJh8QKnw4iBXEQVVE8VHfJ0v6q0If42L8X0IkCdMVM4&_nc_zt=14&_nc_ht=scontent-cdg4-2.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af0YEyGPcJ6AmTwXWaYtMsF-ZgTCrpMd1NgjQJrz0xqLYg&oe=69EDB3C0 — 200 — 3.0 KiB — 61 ms — h3https://scontent-cdg6-1.xx.fbcdn.net/v/t39.8562-6/474725753_1358504298471525_8447910813089343782_n.png?_nc_cat=106&ccb=1-7&_nc_sid=f537c7&_nc_ohc=qPXa5eb8Gw8Q7kNvwGiJsHW&_nc_oc=AdoZ-pPBieL_wv1t9bJ3yQ9FlNh8cvSX0PK9NnqWrdGf0EqIsXfKoNX4QxrtlnWbHR2lS-VtZlLLY0N4CGZOY5GO&_nc_zt=14&_nc_ht=scontent-cdg6-1.xx&_nc_gid=U-pdSTx_J491Q1BssleMgg&_nc_ss=7a389&oh=00_Af1_3_T0YzDzIstDk8LbNh3TOnWhoPr3MxJyzB18Yn7vxA&oe=69ED9B56scontent-cdg6-1.xx.fbcdn.net/v/t39.... 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https://static.xx.fbcdn.net/rsrc.php/v4/y9/r/JuUBG2JKKrG.js — 200 — 2.0 KiB — 24 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yP/r/QJgDEhpEVsN.jsstatic.xx.fbcdn.net/rsrc.php/v4/yP/... https://static.xx.fbcdn.net/rsrc.php/v4/yP/r/QJgDEhpEVsN.js — 200 — 14.0 KiB — 32 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yv/r/AFsmP-ZHvii.jsstatic.xx.fbcdn.net/rsrc.php/v4/yv/... https://static.xx.fbcdn.net/rsrc.php/v4/yv/r/AFsmP-ZHvii.js — 200 — 18.9 KiB — 43 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yt/r/NiZEL-gBXwp.jsstatic.xx.fbcdn.net/rsrc.php/v4/yt/... https://static.xx.fbcdn.net/rsrc.php/v4/yt/r/NiZEL-gBXwp.js — 200 — 511 B — 26 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yW/r/KgoYdzDjwbq.jsstatic.xx.fbcdn.net/rsrc.php/v4/yW/... https://static.xx.fbcdn.net/rsrc.php/v4/yW/r/KgoYdzDjwbq.js — 200 — 2.9 KiB — 38 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4iLl54/y2/l/en_GB-j/NFJZP8sFn-q.jsstatic.xx.fbcdn.net/rsrc.php/v4iLl5... https://static.xx.fbcdn.net/rsrc.php/v4iLl54/y2/l/en_GB-j/NFJZP8sFn-q.js — 200 — 13.4 KiB — 40 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yk/r/2CQw7qQaaCk.jsstatic.xx.fbcdn.net/rsrc.php/v4/yk/... https://static.xx.fbcdn.net/rsrc.php/v4/yk/r/2CQw7qQaaCk.js — 200 — 2.0 KiB — 40 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/ye/r/6nbPvIr9T09.jsstatic.xx.fbcdn.net/rsrc.php/v4/ye/... https://static.xx.fbcdn.net/rsrc.php/v4/ye/r/6nbPvIr9T09.js — 200 — 6.8 KiB — 41 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yJ/r/nxA9t9Gks7L.jsstatic.xx.fbcdn.net/rsrc.php/v4/yJ/... https://static.xx.fbcdn.net/rsrc.php/v4/yJ/r/nxA9t9Gks7L.js — 200 — 4.7 KiB — 41 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/yx/r/v_kkAv_-wGQ.jsstatic.xx.fbcdn.net/rsrc.php/v4/yx/... https://static.xx.fbcdn.net/rsrc.php/v4/yx/r/v_kkAv_-wGQ.js — 200 — 10.3 KiB — 41 ms — h3https://static.xx.fbcdn.net/rsrc.php/v4/y4/r/xQhBU_nB_Ud.jsstatic.xx.fbcdn.net/rsrc.php/v4/y4/... https://static.xx.fbcdn.net/rsrc.php/v4/y4/r/xQhBU_nB_Ud.js — 200 — 63.8 KiB — 46 ms — h3https://scontent.xx.fbcdn.net/hads-ak-prn2/1487645_6012475414660_1439393861_n.pngscontent.xx.fbcdn.net/hads-ak-prn2/... https://scontent.xx.fbcdn.net/hads-ak-prn2/1487645_6012475414660_1439393861_n.png — 200 — 127 B — 42 ms — h3https://static.xx.fbcdn.net/rsrc.php/yO/r/qa11ER6rke_.icostatic.xx.fbcdn.net/rsrc.php/yO/r/q... https://static.xx.fbcdn.net/rsrc.php/yO/r/qa11ER6rke_.ico — 200 — 66.2 KiB — 52 ms — h3https://static.xx.fbcdn.net/rsrc.php/yO/r/qa11ER6rke_.icostatic.xx.fbcdn.net/rsrc.php/yO/r/q... https://static.xx.fbcdn.net/rsrc.php/yO/r/qa11ER6rke_.ico — 200 — 0 B — 1 ms — h3https://www.messenger.com/a/bz?fb_dtsg=NAfth6WdwWmPRTDa2IbDA-HivF0799guVnL7nGI1yM7LKLiJwQVn34A%3A0%3A0&jazoest=24698&lsd=AdTQDwYDB2xBPrmQJs6E6DiChLo&__dyn=0wzpawlE72fDg9ppo5S12wAxu13wqobE6u7E39x60lW4o0wW1gCwjE0AC09Mx60se2G0pS0ny0oi0zE5W0Y81soG0hi0Lo6-0Co1kU3ew4kwde6o38w2Fo&__csr=&__hsdp=&__hblp=&__sjsp=&__req=1&__fmt=1&__a=AYwNAirUm-1fGlmp0WvX_AachJJBIfM8s40qnNQNwm6Nk9CIIdHg7_CZ3mJYsdqeTHoyylcsCT3b2eH1gw38aDLFvYc3Ow4vLzI&__user=0www.messenger.com/a/bz?fb_dtsg=NAft... https://www.messenger.com/a/bz?fb_dtsg=NAfth6WdwWmPRTDa2IbDA-HivF0799guVnL7nGI1yM7LKLiJwQVn34A%3A0%3A0&jazoest=24698&lsd=AdTQDwYDB2xBPrmQJs6E6DiChLo&__dyn=0wzpawlE72fDg9ppo5S12wAxu13wqobE6u7E39x60lW4o0wW1gCwjE0AC09Mx60se2G0pS0ny0oi0zE5W0Y81soG0hi0Lo6-0Co1kU3ew4kwde6o38w2Fo&__csr=&__hsdp=&__hblp=&__sjsp=&__req=1&__fmt=1&__a=AYwNAirUm-1fGlmp0WvX_AachJJBIfM8s40qnNQNwm6Nk9CIIdHg7_CZ3mJYsdqeTHoyylcsCT3b2eH1gw38aDLFvYc3Ow4vLzI&__user=0 — 200 — 342 B — 126 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 785ms · 106KB · $10/mo
Unattributable
Other
Costly
Execution 292ms
Transfer 0 KB
Monthly Cost $4/mo
www.messenger.com
Other
Costly
Execution 246ms
Transfer 25 KB
Monthly Cost $3/mo
static.xx.fbcdn.net
Other
Optional
Execution 172ms
Transfer 67 KB
Unused 43%
Monthly Cost $2/mo
static.xx.fbcdn.net
Other
Optional
Execution 76ms
Transfer 13 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 292ms and costs ~$4/month
  • www.messenger.com adds 246ms 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

Unattributable takes 292ms 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.messenger.com takes 246ms 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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