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https://www.aljazeera.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
36
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

4.71 s

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

6.44 s

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

1.40 s

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.

7.13 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.

26.74 s

Page Load Progression

830 ms
1.7 s
2.5 s
3.3 s
4.2 s
5.0 s
5.8 s
6.6 s
Checks
16
8 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
6.2 MB transferred, 115 requests
FIX
6.2 MB transferred, 115 requests
Critical::
Page weighs 13.8 MB (6.2 MB transferred)
Warning::
Images are 3.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.1 MB
Warning::
JavaScript is 2.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.4 MB
Warning::
115 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.3 g CO2 per page load
6.2 MB / 2.4 MB budget
6.2 MB transferred
115 requests
1.3 g CO2 per page load
Images 3.1 MiB 50%
JavaScript 2.4 MiB 39%
HTML 404.4 KiB 6%
Fonts 145.9 KiB 2%
CSS 145.0 KiB 2%
Other 6.2 KiB 0%
Other 4.4 KiB 0%
Other 1007 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
70% third-party, 0 ms blocking
FIX
70% third-party, 0 ms blocking
Warning::
Third-party code accounts for 70% of page weight (4.3 MiB of 6.2 MiB)
Info::
Third-party blocking time is low (0 ms)
30%
70%
First-party Third-party
F
JS Execution Cost
Action
10009ms total JS execution
FIX
10009ms total JS execution
Warning::
https://www.aljazeera.com/: 3620ms CPU time
Warning::
https://www.aljazeera.com/static/js/main.c92ae429....: 2097ms CPU time
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 1049ms CPU time
Warning::
Unattributable: 814ms CPU time
Warning::
https://www.aljazeera.com/static/js/brightcove-lib...: 643ms CPU time
Info::
Third-party scripts: 3363ms (34% of total)

Main Thread Breakdown

Script Evaluation 45% Other 30% Style & Layout 13% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.aljazeera.com/3620ms92ms37ms1st
https://www.aljazeera.com/static/js/main.c92ae429.js2097ms1723ms1ms1st
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js1049ms937ms82ms3rd
Unattributable814ms64ms0ms3rd
https://www.aljazeera.com/static/js/brightcove-libs~7dbd8cdd.63f20213.chunk.js643ms561ms1ms1st
https://players.brightcove.net/665003303001/UbqgmlUbk_default/index.min.js610ms372ms110ms3rd
https://www.googletagmanager.com/gtag/js?id=G-XN9JB9Q0M1246ms201ms44ms3rd
https://imasdk.googleapis.com/js/sdkloader/ima3.js207ms156ms49ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MJWQ5L2162ms127ms27ms3rd
https://www.aljazeera.com/static/js/react-core~7dbd8cdd.03b5246c.chunk.js113ms39ms13ms1st

Showing top 10 of 16 scripts

F
JS Bundles
Action
41 scripts, 1.3 MB unused
FIX
41 scripts, 1.3 MB unused
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://players.brightcove.net/665003303001/Ubqgml...: 172 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XN9J...: 113 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.3 MB
1284 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://players.brightcove.net/665003303001/UbqgmlUbk_default/index.min.js331 KB172 KB (52%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-XN9JB9Q0M1&cx=c&gtm=4e6461h2167 KB113 KB (68%)✓3rd
https://imasdk.googleapis.com/js/sdkloader/ima3.js147 KB80 KB (55%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-XN9JB9Q0M1167 KB69 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MJWQ5L2117 KB61 KB (53%)✓3rd
https://www.aljazeera.com/static/js/vendor~main~7dbd8cdd.1cbe70e4.chunk.js67 KB43 KB (64%)✓1st
https://www.aljazeera.com/static/js/component~amp-route~article-route~common-route~gallery-route~homepage-route~liveblog-route~login-rou~d82eadb2.d6057276.chunk.js54 KB31 KB (58%)✓1st

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

B
Image Optimization
40 images, 0 KB saveable
REVIEW
40 images, 0 KB saveable
Info::
All images are well-optimized
40 images 3.1 MB
0 oversized -0 KB
17 legacy format
0 missing dimensions CLS risk
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
6 fonts (146 KB)
PASS
6 fonts (146 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

146 KB total

Render-blocking

0

of 6

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 4.0 s 5.0 s 6.0 s FCP 4.7 s LCP 6.4 shttps://www.aljazeera.com/static/media/Roboto-Bold.52bb58c8.woff2Roboto-Bold.52bb58c8.woff2 https://www.aljazeera.com/static/media/Roboto-Bold.52bb58c8.woff2 — 22.5 KiB — 0 ms — font-display: swaphttps://www.aljazeera.com/static/media/Roboto-Regular.c5bf51b6.woff2Roboto-Regular.c5bf51b6... https://www.aljazeera.com/static/media/Roboto-Regular.c5bf51b6.woff2 — 22.4 KiB — 0 ms — font-display: swaphttps://www.aljazeera.com/static/media/Roboto-Medium.15431381.woff2Roboto-Medium.15431381.... https://www.aljazeera.com/static/media/Roboto-Medium.15431381.woff2 — 22.5 KiB — 0 ms — font-display: swaphttps://www.aljazeera.com/static/media/Roboto-Black.d8e97377.woff2Roboto-Black.d8e97377.w... https://www.aljazeera.com/static/media/Roboto-Black.d8e97377.woff2 — 22.4 KiB — 0 ms — font-display: swaphttps://www.aljazeera.com/static/media/Roboto-Light.56ecfc67.woff2Roboto-Light.56ecfc67.w... https://www.aljazeera.com/static/media/Roboto-Light.56ecfc67.woff2 — 22.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 0 ms — font-display: swap
Roboto-Bold.52bb58c8.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Regular.c5bf51b6... woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Medium.15431381.... woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Black.d8e97377.w... woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Light.56ecfc67.w... woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 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
42 hints, 0 missing preconnects
PASS
42 hints, 0 missing preconnects
Info::
Page uses 42 resource hint(s)

Current Resource Hints

preconnect
6
preload
+23
33
dns-prefetch
3
prefetch
—

42 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+
HTTP Caching
max-age=120 (2 minutes)
PASS
max-age=120 (2 minutes)
Info::
Cache-Control header is set
Got: max-age=120, must-revalidate
Info::
Effective TTL: 2 minutes (max-age=120)
Info::
ETag present — enables conditional (304) responses
Cache-Control

max-age=120, must-revalidate

DirectiveValueMeaning
max-age120Cache for 2 minutes
must-revalidate—Must recheck with server after expiry
Effective TTL: 120 seconds
Network Waterfall
115 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
34% of JavaScript execution is third-party
First-party Third-party 3363ms · 976KB · ر.ق165/mo
www.gstatic.com
Other
Costly
Execution 1049ms
Transfer 0 KB
Unused 49%
Monthly Cost ر.ق52/mo
Unattributable
Other
Costly
Execution 814ms
Transfer 0 KB
Monthly Cost ر.ق40/mo
players.brightcove.net
Other
Costly
Execution 610ms
Transfer 331 KB
Unused 52%
Monthly Cost ر.ق30/mo
Google Tag Manager
Tag Manager
Costly
Execution 246ms
Transfer 167 KB
Unused 41%
Monthly Cost ر.ق12/mo
imasdk.googleapis.com
Other
Costly
Execution 207ms
Transfer 147 KB
Unused 55%
Monthly Cost ر.ق10/mo
Google Tag Manager
Tag Manager
Optional
Execution 162ms
Transfer 117 KB
Unused 53%
Monthly Cost ر.ق8/mo
static.chartbeat.com
Other
Optional
Execution 84ms
Transfer 16 KB
Monthly Cost ر.ق4/mo
pagead2.googlesyndication.com
Other
Optional
Execution 75ms
Transfer 15 KB
Monthly Cost ر.ق4/mo
Google Tag Manager
Tag Manager
Optional
Execution 62ms
Transfer 167 KB
Unused 68%
Monthly Cost ر.ق3/mo
Amplitude
Analytics
Optional
Execution 54ms
Transfer 17 KB
Monthly Cost ر.ق3/mo

These scripts may cost more than they're worth

  • www.gstatic.com adds 1049ms and costs ~ر.ق52/month
  • Unattributable adds 814ms and costs ~ر.ق40/month
  • players.brightcove.net adds 610ms and costs ~ر.ق30/month
  • Google Tag Manager adds 246ms and costs ~ر.ق12/month
  • imasdk.googleapis.com adds 207ms and costs ~ر.ق10/month

www.gstatic.com takes 1049ms 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 814ms 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

players.brightcove.net takes 610ms 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 players.brightcove.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

Google Tag Manager 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

imasdk.googleapis.com takes 207ms 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

55% of imasdk.googleapis.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

53% of Google Tag Manager'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

68% of Google Tag Manager'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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