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Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
0
REVIEW
5
PASS
18
INFO
3

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

Mobile Desktop
92
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.
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.

1.12 s

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

1.76 s

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

326 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.

1.12 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.

5.53 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
26
18 PASS 5 REVIEW
B
Third-Party Impact
59% third-party, 0 ms blocking
REVIEW
59% third-party, 0 ms blocking
Warning::
Third-party code accounts for 59% of page weight (207.4 KiB of 354.4 KiB)
Info::
Third-party blocking time is low (0 ms)
41%
59%
First-party Third-party
C
JS Execution Cost
Action
1342ms total JS execution
REVIEW
1342ms total JS execution
Warning::
https://iptv-org.pro/: 416ms CPU time
Warning::
https://iptv-org.pro/_next/static/chunks/122-68a4c...: 266ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-SJYV...: 261ms CPU time
Info::
https://scripts.clarity.ms/0.8.69-beta/clarity.js: 214ms CPU time
Info::
Unattributable: 185ms CPU time
Info::
Third-party scripts: 475ms (35% of total)

Main Thread Breakdown

Script Evaluation 47% Style & Layout 22% Other 16% Script Parsing & Compilation 8% Garbage Collection 3%
ScriptTotalScriptingParse/CompileParty
https://iptv-org.pro/416ms17ms19ms1st
https://iptv-org.pro/_next/static/chunks/122-68a4c6e8b22e0ad6.js266ms225ms17ms1st
https://www.googletagmanager.com/gtag/js?id=G-SJYVTBVL5M261ms197ms45ms3rd
https://scripts.clarity.ms/0.8.69-beta/clarity.js214ms190ms5ms3rd
Unattributable185ms7ms0ms1st
B
JS Bundles
10 scripts, 125 KB unused
REVIEW
10 scripts, 125 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-SJYV...: 72 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://iptv-org.pro/_next/static/chunks/122-68a4c...: 27 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://iptv-org.pro/_next/static/chunks/66216d83-...: 27 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 125 KB
125 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-SJYVTBVL5M170 KB72 KB (42%)✓3rd
https://iptv-org.pro/_next/static/chunks/122-68a4c6e8b22e0ad6.js52 KB27 KB (52%)✓1st
https://iptv-org.pro/_next/static/chunks/66216d83-1255e684610c5d3c.js61 KB27 KB (44%)✓1st
https://iptv-org.pro/_next/static/chunks/webpack-be33c4e88c4b6868.js2 KB—✓1st
https://iptv-org.pro/_next/static/chunks/main-app-53379581c58e0dd2.js0 KB—✓1st
https://iptv-org.pro/_next/static/chunks/app/page-5d65b92a0b4a217d.js1 KB—✓1st
https://umami.bestvid.net/script.js3 KB—✓3rd
https://www.clarity.ms/tag/y9g114dzh31 KB—✓3rd
https://analytics.ahrefs.com/analytics.js3 KB—✓3rd
https://scripts.clarity.ms/0.8.69-beta/clarity.js25 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

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.
B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
354 KB transferred, 20 requests
PASS
354 KB transferred, 20 requests
Info::
Page weighs 1.2 MB (354 KB transferred)
Info::
20 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
354 KB / 2.4 MB budget
354 KB transferred
20 requests
0.07 g CO2 per page load
JavaScript 319.0 KiB 90%
HTML 19.7 KiB 6%
CSS 9.3 KiB 3%
Images 2.7 KiB 1%
Other 1.6 KiB 0%
Other 1.5 KiB 0%
Other 584 B 0%
Other 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+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 3 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
—
preload
1
dns-prefetch
—
prefetch
—

1 resource hints configured

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+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
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+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0, must-revalidate
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: accept-encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
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.
A
Page Weight Inventory
20 resources · 354 KB · 125 KB savings available
PASS
20 resources · 354 KB · 125 KB savings available
Info::
Within 1MB page-weight target
Got: 354 KB
Info::
~125 KB of savings available
Warning::
11 third-party resources (59% of weight)
20 resources · 354.4 KiB · 11 third-party Within 1MB page-weight target
JavaScript 90% · 319.0 KiB
Document 6% · 19.7 KiB
CSS 3% · 9.3 KiB
Image 1% · 4.2 KiB
Other 1% · 2.2 KiB

~125.4 KiB of savings available

Remove unused JavaScript: 125.4 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
A
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
1 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
20 requests over 1261ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.1 s LCP 1.8 shttps://iptv-org.pro// https://iptv-org.pro/ — 200 — 19.7 KiB — 135 ms — h2https://iptv-org.pro/_next/static/css/e890aa7724a6b915.css/_next/static/css/e890aa7724a6b915.... https://iptv-org.pro/_next/static/css/e890aa7724a6b915.css — 200 — 9.3 KiB — 42 ms — h2https://iptv-org.pro/_next/static/chunks/webpack-be33c4e88c4b6868.js/_next/static/chunks/webpack-be33c4... https://iptv-org.pro/_next/static/chunks/webpack-be33c4e88c4b6868.js — 200 — 1.9 KiB — 37 ms — h2https://iptv-org.pro/_next/static/chunks/66216d83-1255e684610c5d3c.js/_next/static/chunks/66216d83-1255e... https://iptv-org.pro/_next/static/chunks/66216d83-1255e684610c5d3c.js — 200 — 61.3 KiB — 53 ms — h2https://iptv-org.pro/_next/static/chunks/122-68a4c6e8b22e0ad6.js/_next/static/chunks/122-68a4c6e8b2... https://iptv-org.pro/_next/static/chunks/122-68a4c6e8b22e0ad6.js — 200 — 52.1 KiB — 63 ms — h2https://iptv-org.pro/_next/static/chunks/main-app-53379581c58e0dd2.js/_next/static/chunks/main-app-53379... https://iptv-org.pro/_next/static/chunks/main-app-53379581c58e0dd2.js — 200 — 512 B — 56 ms — h2https://iptv-org.pro/_next/static/chunks/app/page-5d65b92a0b4a217d.js/_next/static/chunks/app/page-5d65b... https://iptv-org.pro/_next/static/chunks/app/page-5d65b92a0b4a217d.js — 200 — 665 B — 54 ms — h2https://upload.wikimedia.org/wikipedia/commons/8/89/PBS_logo_2019.svgupload.wikimedia.org/wikipedia/comm... https://upload.wikimedia.org/wikipedia/commons/8/89/PBS_logo_2019.svg — 200 — 2.7 KiB — 115 ms — h2https://www.googletagmanager.com/gtag/js?id=G-SJYVTBVL5Mwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-SJYVTBVL5M — 200 — 170.1 KiB — 267 ms — h2https://umami.bestvid.net/script.jsumami.bestvid.net/script.js https://umami.bestvid.net/script.js — 200 — 3.0 KiB — 99 ms — h3https://www.clarity.ms/tag/y9g114dzh3www.clarity.ms/tag/y9g114dzh3 https://www.clarity.ms/tag/y9g114dzh3 — 200 — 1.1 KiB — 159 ms — http/1.1https://analytics.ahrefs.com/analytics.jsanalytics.ahrefs.com/analytics.js https://analytics.ahrefs.com/analytics.js — 200 — 3.0 KiB — 105 ms — h3https://iptv-org.pro/favicon.ico/favicon.ico https://iptv-org.pro/favicon.ico — 200 — 842 B — 32 ms — h3https://iptv-org.pro/favicon.svg/favicon.svg https://iptv-org.pro/favicon.svg — 200 — 724 B — 30 ms — h3https://umami.bestvid.net/api/sendumami.bestvid.net/api/send https://umami.bestvid.net/api/send — 204 — 0 B — 134 ms — h3https://analytics.ahrefs.com/api/eventanalytics.ahrefs.com/api/event https://analytics.ahrefs.com/api/event — 200 — 308 B — 135 ms — h3https://scripts.clarity.ms/0.8.69-beta/clarity.jsscripts.clarity.ms/0.8.69-beta/clar... https://scripts.clarity.ms/0.8.69-beta/clarity.js — 200 — 25.3 KiB — 125 ms — h2https://umami.bestvid.net/api/sendumami.bestvid.net/api/send https://umami.bestvid.net/api/send — 200 — 1.1 KiB — 65 ms — h3https://region1.google-analytics.com/g/collect?v=2&tid=G-SJYVTBVL5M&gtm=45je68s1v9262561213za200zd9262561213&_p=1788276125642&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1059376522.1788276126&frm=0&ngs=1&pscdl=noapi&rcb=4&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B151.0.7922.173%7CNot%253DA%253FBrand%3B99.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616985~115938465~115938468~118897920~118897930~120213116~120385422&sid=1788276125&sct=1&seg=0&dl=https%3A%2F%2Fiptv-org.pro%2F&dt=iptv-org%20pro%20%7C%20Public%20TV%20Channel%20Directory&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=686region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-SJYVTBVL5M&gtm=45je68s1v9262561213za200zd9262561213&_p=1788276125642&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1059376522.1788276126&frm=0&ngs=1&pscdl=noapi&rcb=4&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B151.0.7922.173%7CNot%253DA%253FBrand%3B99.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616985~115938465~115938468~118897920~118897930~120213116~120385422&sid=1788276125&sct=1&seg=0&dl=https%3A%2F%2Fiptv-org.pro%2F&dt=iptv-org%20pro%20%7C%20Public%20TV%20Channel%20Directory&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=686 — 204 — 547 B — 88 ms — h2https://n.clarity.ms/collectn.clarity.ms/collect https://n.clarity.ms/collect — 204 — 276 B — 452 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
35% of JavaScript execution is third-party
First-party Third-party 475ms · 195KB · €5/mo
Google Tag Manager
Tag Manager
Costly
Execution 261ms
Transfer 170 KB
Unused 42%
Monthly Cost €3/mo
Microsoft Clarity
Session Replay
Costly
Execution 214ms
Transfer 25 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 261ms and costs ~€3/month
  • Microsoft Clarity adds 214ms and costs ~€2/month

Google Tag Manager takes 261ms 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

Microsoft Clarity takes 214ms 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

Image Optimization
32 images, 126 KB total, 62 KB wasted
INFO

Image Optimization Audit

Total Images

32

Total Size

126 KB

Oversized

6

Wasted

62 KB

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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