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https://znaki.fm

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
0
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
72
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
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.

427 ms

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

1.36 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.

1.002

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

799 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.36 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
15
10 PASS 3 REVIEW
B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Info::
All images are well-optimized
18 images 399 KB
0 oversized -0 KB
7 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
3 scripts, 192 KB unused
REVIEW
3 scripts, 192 KB unused
Warning::
https://znaki.fm/static/build/pub/js/app.75635b2ff...: 127 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-7S8H...: 65 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 192 KB
192 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://znaki.fm/static/build/pub/js/app.75635b2ffe.js166 KB127 KB (77%)✓1st
https://www.googletagmanager.com/gtag/js?id=G-7S8H7GMTTQ160 KB65 KB (41%)✓3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 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

B
HTTP Caching
no-cache, private
REVIEW
no-cache, private
Info::
Cache-Control header is set
Got: no-cache, private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache, private

DirectiveValueMeaning
no-cache—Cache but always revalidate first
private—Only browser cache, not CDN/proxy
A
Page Weight Budget
783 KB transferred, 29 requests
PASS
783 KB transferred, 29 requests
Info::
Page weighs 1.7 MB (783 KB transferred)
Info::
29 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
783 KB / 2.4 MB budget
783 KB transferred
29 requests
0.16 g CO2 per page load
Images 399.3 KiB 51%
JavaScript 336.6 KiB 43%
HTML 19.2 KiB 2%
CSS 18.2 KiB 2%
Other 5.5 KiB 1%
Other 3.7 KiB 0%
Other 463 B 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
22% third-party, 0 ms blocking
PASS
22% third-party, 0 ms blocking
Info::
Third-party code accounts for 22% of page weight (171.1 KiB of 783.0 KiB)
Info::
Third-party blocking time is low (0 ms)
78%
22%
First-party Third-party
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+
JS Execution Cost
374ms total JS execution
PASS
374ms total JS execution
Info::
https://znaki.fm/: 153ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-7S8H...: 81ms CPU time
Info::
https://znaki.fm/static/build/pub/js/app.75635b2ff...: 76ms CPU time
Info::
Unattributable: 63ms CPU time
Info::
Third-party scripts: 144ms (39% of total)

Main Thread Breakdown

Script Evaluation 33% Other 31% Style & Layout 17% Script Parsing & Compilation 9% Rendering 7%
ScriptTotalScriptingParse/CompileParty
https://znaki.fm/153ms2ms1ms1st
https://www.googletagmanager.com/gtag/js?id=G-7S8H7GMTTQ81ms65ms15ms3rd
https://znaki.fm/static/build/pub/js/app.75635b2ffe.js76ms51ms17ms1st
Unattributable63ms2ms0ms3rd
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Page Weight Inventory
29 resources · 783 KB · 192 KB savings available
PASS
29 resources · 783 KB · 192 KB savings available
Info::
Within 1MB page-weight target
Got: 783 KB
Info::
~192 KB of savings available
Info::
3 third-party resources (22% of weight)
29 resources · 783.0 KiB · 3 third-party Within 1MB page-weight target
Image 52% · 404.8 KiB
JavaScript 43% · 336.6 KiB
Document 2% · 19.2 KiB
CSS 2% · 18.2 KiB
Other 1% · 4.1 KiB

~191.7 KiB of savings available

Remove unused JavaScript: 191.7 KiB
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
29 requests over 999ms
INFO
0 ms 500 ms 1.0 s FCP 427 ms LCP 1.4 shttps://znaki.fm// https://znaki.fm/ — 200 — 19.2 KiB — 374 ms — h3https://znaki.fm/static/content/files/f/fd/a30a62a6041482b9a59be9312704efdf.svg/static/content/files/f/fd/a30a62a6... https://znaki.fm/static/content/files/f/fd/a30a62a6041482b9a59be9312704efdf.svg — 200 — 965 B — 19 ms — h3https://znaki.fm/static/build/pub/css/home-page.b2dd3e8d5a.css/static/build/pub/css/home-page.b2d... https://znaki.fm/static/build/pub/css/home-page.b2dd3e8d5a.css — 200 — 18.2 KiB — 21 ms — h3https://znaki.fm/static/build/pub/js/app.75635b2ffe.js/static/build/pub/js/app.75635b2ffe... https://znaki.fm/static/build/pub/js/app.75635b2ffe.js — 200 — 166.1 KiB — 27 ms — h3https://www.googletagmanager.com/gtag/js?id=G-7S8H7GMTTQwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-7S8H7GMTTQ — 200 — 159.8 KiB — 78 ms — h2https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 30 ms — h2https://znaki.fm/static/build/pub/img/sprite.3139884b8d.svg/static/build/pub/img/sprite.313988... https://znaki.fm/static/build/pub/img/sprite.3139884b8d.svg — 200 — 4.1 KiB — 15 ms — h3https://znaki.fm/static/content/thumbs/40x40/c/bb/4fsolt---c1x1x50px50p--bbc55d935bdb7dffff2bc4495fa96bbc.jpg/static/content/thumbs/40x40/c/bb/4... https://znaki.fm/static/content/thumbs/40x40/c/bb/4fsolt---c1x1x50px50p--bbc55d935bdb7dffff2bc4495fa96bbc.jpg — 200 — 1.3 KiB — 19 ms — h3https://znaki.fm/static/content/thumbs/335x223/2/8e/p26ene---c3x2x50px50p--7e28e0f2fe6ad6665f902ae1355f38e2.jpg/static/content/thumbs/335x223/2/8e... https://znaki.fm/static/content/thumbs/335x223/2/8e/p26ene---c3x2x50px50p--7e28e0f2fe6ad6665f902ae1355f38e2.jpg — 200 — 29.8 KiB — 13 ms — h3https://znaki.fm/static/content/thumbs/414x276/7/5c/tj2fva---c3x2x50px50p--dd230c69a441c22114a33424962dd5c7.webp/static/content/thumbs/414x276/7/5c... https://znaki.fm/static/content/thumbs/414x276/7/5c/tj2fva---c3x2x50px50p--dd230c69a441c22114a33424962dd5c7.webp — 200 — 16.6 KiB — 423 ms — h3https://znaki.fm/static/content/thumbs/335x223/5/aa/d4x4k7---c3x2x50px50p--2e01d40936cb07150ec1666d3697aaa5.jpg/static/content/thumbs/335x223/5/aa... https://znaki.fm/static/content/thumbs/335x223/5/aa/d4x4k7---c3x2x50px50p--2e01d40936cb07150ec1666d3697aaa5.jpg — 200 — 20.5 KiB — 16 ms — h3https://znaki.fm/static/content/thumbs/630x378/3/8c/u7hjxr---c5x3x50px50p--79a7761b75671b80c8a80c6d2dc2f8c3.webp/static/content/thumbs/630x378/3/8c... https://znaki.fm/static/content/thumbs/630x378/3/8c/u7hjxr---c5x3x50px50p--79a7761b75671b80c8a80c6d2dc2f8c3.webp — 200 — 47.2 KiB — 447 ms — h3https://znaki.fm/static/content/thumbs/414x276/f/ac/6mvtyr---c3x2x50px50p--70b253508fdbd79b74c2cda6584bdacf.webp/static/content/thumbs/414x276/f/ac... https://znaki.fm/static/content/thumbs/414x276/f/ac/6mvtyr---c3x2x50px50p--70b253508fdbd79b74c2cda6584bdacf.webp — 200 — 24.5 KiB — 439 ms — h3https://znaki.fm/static/content/thumbs/630x378/0/f1/22mtfr---c5x3x50px50p--169078f4d087685203544f2b90a9af10.webp/static/content/thumbs/630x378/0/f1... https://znaki.fm/static/content/thumbs/630x378/0/f1/22mtfr---c5x3x50px50p--169078f4d087685203544f2b90a9af10.webp — 200 — 38.6 KiB — 376 ms — h3https://znaki.fm/static/content/thumbs/414x276/e/b0/pjkw7q---c3x2x50px50p--e21560339b804e1379f218f93b4a9b0e.webp/static/content/thumbs/414x276/e/b0... https://znaki.fm/static/content/thumbs/414x276/e/b0/pjkw7q---c3x2x50px50p--e21560339b804e1379f218f93b4a9b0e.webp — 200 — 14.0 KiB — 370 ms — h3https://znaki.fm/static/content/thumbs/335x223/c/78/vu2hjr---c3x2x50px50p--83f6ede3c3cfb9ccc4eae3baa6f1078c.jpg/static/content/thumbs/335x223/c/78... https://znaki.fm/static/content/thumbs/335x223/c/78/vu2hjr---c3x2x50px50p--83f6ede3c3cfb9ccc4eae3baa6f1078c.jpg — 200 — 19.0 KiB — 15 ms — h3https://znaki.fm/static/content/thumbs/40x40/2/40/sebdsn---c1x1x50px50p--4fd86068470a23cf81fbd7fcc20b3402.jpg/static/content/thumbs/40x40/2/40/s... https://znaki.fm/static/content/thumbs/40x40/2/40/sebdsn---c1x1x50px50p--4fd86068470a23cf81fbd7fcc20b3402.jpg — 200 — 1.4 KiB — 17 ms — h3https://znaki.fm/static/content/thumbs/335x223/d/31/kfajoa---c3x2x50px50p--79e3aec06a617ef9953ecdf2d4e6231d.jpg/static/content/thumbs/335x223/d/31... https://znaki.fm/static/content/thumbs/335x223/d/31/kfajoa---c3x2x50px50p--79e3aec06a617ef9953ecdf2d4e6231d.jpg — 200 — 22.7 KiB — 17 ms — h3https://znaki.fm/static/content/thumbs/414x276/3/69/ltfzch---c3x2x50px50p--7af9084427fcecf5c610868a28690693.webp/static/content/thumbs/414x276/3/69... https://znaki.fm/static/content/thumbs/414x276/3/69/ltfzch---c3x2x50px50p--7af9084427fcecf5c610868a28690693.webp — 200 — 28.5 KiB — 373 ms — h3https://znaki.fm/static/content/thumbs/414x276/c/ad/te53hi---c3x2x50px50p--6d3c246fa0d0ed7e940916c918417adc.webp/static/content/thumbs/414x276/c/ad... https://znaki.fm/static/content/thumbs/414x276/c/ad/te53hi---c3x2x50px50p--6d3c246fa0d0ed7e940916c918417adc.webp — 200 — 32.3 KiB — 366 ms — h3https://znaki.fm/static/content/thumbs/414x276/d/5e/5owq5j---c3x2x50px50p--3fad7a5fee92ab773aa5f997cb0675ed.webp/static/content/thumbs/414x276/d/5e... https://znaki.fm/static/content/thumbs/414x276/d/5e/5owq5j---c3x2x50px50p--3fad7a5fee92ab773aa5f997cb0675ed.webp — 200 — 16.7 KiB — 180 ms — h3https://znaki.fm/api/home/load-more/?page=2/api/home/load-more/?page=2 https://znaki.fm/api/home/load-more/?page=2 — 200 — 3.2 KiB — 280 ms — h3https://znaki.fm/static/content/thumbs/414x276/f/70/3udmt5---c3x2x50px50p--d8bd2ce0b89eb283fffcbea215c8a70f.webp/static/content/thumbs/414x276/f/70... https://znaki.fm/static/content/thumbs/414x276/f/70/3udmt5---c3x2x50px50p--d8bd2ce0b89eb283fffcbea215c8a70f.webp — 200 — 37.2 KiB — 372 ms — h3https://znaki.fm/static/content/thumbs/414x276/a/b6/jxh733---c3x2x50px50p--ba838db8554d59512f75a5c08b9cdb6a.webp/static/content/thumbs/414x276/a/b6... https://znaki.fm/static/content/thumbs/414x276/a/b6/jxh733---c3x2x50px50p--ba838db8554d59512f75a5c08b9cdb6a.webp — 200 — 14.2 KiB — 368 ms — h3https://znaki.fm/static/content/thumbs/414x276/b/71/o4ssoo---c3x2x50px50p--30bfbf72df884f2cbed69c8bf172471b.webp/static/content/thumbs/414x276/b/71... https://znaki.fm/static/content/thumbs/414x276/b/71/o4ssoo---c3x2x50px50p--30bfbf72df884f2cbed69c8bf172471b.webp — 200 — 33.7 KiB — 372 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-7S8H7GMTTQ&gtm=45je64h1v9164329393za200zd9164329393&_p=1776819603719&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=896368989.1776819604&frm=0&pscdl=noapi&rcb=11&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938469~117266400~117512542~117884344~118463262&sid=1776819603&sct=1&seg=0&dl=https%3A%2F%2Fznaki.fm%2F&dt=All%20news%20-%20the%20latest%20and%20fresh%20topics%20of%20the%20day%20in%202026%20-%20Znaki%20FM&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=676www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-7S8H7GMTTQ&gtm=45je64h1v9164329393za200zd9164329393&_p=1776819603719&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=896368989.1776819604&frm=0&pscdl=noapi&rcb=11&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938469~117266400~117512542~117884344~118463262&sid=1776819603&sct=1&seg=0&dl=https%3A%2F%2Fznaki.fm%2F&dt=All%20news%20-%20the%20latest%20and%20fresh%20topics%20of%20the%20day%20in%202026%20-%20Znaki%20FM&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=676 — 204 — 544 B — 36 ms — h2https://znaki.fm/cdn-cgi/rum?/cdn-cgi/rum? https://znaki.fm/cdn-cgi/rum? — 204 — 463 B — 6 ms — h3https://znaki.fm/static/content/files/a/cb/7fde059d7ac1afa659702f5b681accba.png/static/content/files/a/cb/7fde059d... https://znaki.fm/static/content/files/a/cb/7fde059d7ac1afa659702f5b681accba.png — 200 — 731 B — 12 ms — h3https://znaki.fm/static/content/files/8/6c/e22a9a9fd9e6ff19b0d394f78a7446c8.svg/static/content/files/8/6c/e22a9a9f... https://znaki.fm/static/content/files/8/6c/e22a9a9fd9e6ff19b0d394f78a7446c8.svg — 200 — 753 B — 11 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
39% of JavaScript execution is third-party
First-party Third-party 144ms · 160KB · $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 81ms
Transfer 160 KB
Unused 41%
Monthly Cost $1/mo
Unattributable
Other
Optional
Execution 63ms
Transfer 0 KB
Monthly Cost $1/mo

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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