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https://towardsliberty.com

Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
3
REVIEW
5
PASS
15
INFO
3

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

Mobile Desktop
100
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
81
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
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.

943 ms

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

1.64 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.

943 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.

1.64 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
15 PASS 5 REVIEW 3 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 29 requests
FIX
2.2 MB transferred, 29 requests
Info::
Page weighs 2.3 MB (2.2 MB transferred)
Warning::
Images are 2.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.2 MB
Info::
29 HTTP requests
Info::
Estimated 0.47 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
29 requests
0.47 g CO2 per page load
Images 2.2 MiB 98%
HTML 12.4 KiB 1%
JavaScript 12.0 KiB 1%
CSS 7.6 KiB 0%
Other 4.4 KiB 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

D
Third-Party Impact
Action
99% third-party, 0 ms blocking
FIX
99% third-party, 0 ms blocking
Warning::
Third-party code accounts for 99% of page weight (2.2 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
D
Page Weight Inventory
Action
29 resources · 2.2 MB · 0 KB savings available
FIX
29 resources · 2.2 MB · 0 KB savings available
Warning::
Page weight 2.2 MB exceeds 1 MB target by 1.2 MB
Got: 2.2 MB Expected: ≤ 1 MB
Warning::
19 third-party resources (99% of weight)
Info::
1 resources over 200KB
29 resources · 2.2 MiB · 19 third-party 1.2 MiB over 1MB target
Image 99% · 2.2 MiB
Document 1% · 13.9 KiB
JavaScript 1% · 12.0 KiB
CSS 0% · 7.6 KiB
Other 0% · 802 B
B
Image Optimization
12 images, 0 KB saveable
REVIEW
12 images, 0 KB saveable
Info::
All images are well-optimized
12 images 2.2 MB
0 oversized -0 KB
8 legacy format
0 missing dimensions CLS risk
B
JS Execution Cost
550ms total JS execution
REVIEW
550ms total JS execution
Warning::
https://towardsliberty.com/: 322ms CPU time
Info::
Unattributable: 229ms CPU time

Main Thread Breakdown

Other 56% Style & Layout 23% Rendering 11% Script Evaluation 5% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://towardsliberty.com/322ms20ms2ms1st
Unattributable229ms7ms0ms1st
B
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
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+
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+
JS Bundles
4 scripts, 0 KB unused
PASS
4 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://towardsliberty.com/_astro/ZapModal.astro_astro_type_script_index_0_lang.B1aIAS2o.js2 KB—✓1st
https://towardsliberty.com/_astro/Base.astro_astro_type_script_index_0_lang.B86LJwd1.js0 KB—✓1st
https://towardsliberty.com/_astro/Base.astro_astro_type_script_index_1_lang.A5eoScdu.js0 KB—✓1st
https://towardsliberty.com/_astro/client.ax_QIWSw.js10 KB—✓1st
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+
Main HTML Cache-Control
Main HTML max-age=300 (≤ 5min) is appropriate
PASS
Main HTML max-age=300 (≤ 5min) is appropriate
Info::
Main HTML max-age=300 (≤ 5min) is appropriate
Got: public, max-age=300
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept, 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::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
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
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
4 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
A+
HTTP Caching
max-age=300 (5 minutes)
PASS
max-age=300 (5 minutes)
Info::
Cache-Control header is set
Got: public, max-age=300
Info::
Effective TTL: 5 minutes (max-age=300)
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

public, max-age=300

DirectiveValueMeaning
public—Any cache may store this response
max-age300Cache for 5 minutes
Effective TTL: 300 seconds
Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall
29 requests over 1226ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 943 ms LCP 1.6 shttps://towardsliberty.com// https://towardsliberty.com/ — 200 — 12.4 KiB — 156 ms — h2https://void.cat/d/PquFgcLzUjeZTpqQyN6z5A.webpvoid.cat/d/PquFgcLzUjeZTpqQyN6z5A.w... https://void.cat/d/PquFgcLzUjeZTpqQyN6z5A.webp — -1 — 0 B — 56 ms — https://towardsliberty.com/_astro/Base.D6BvVUxm.css/_astro/Base.D6BvVUxm.css https://towardsliberty.com/_astro/Base.D6BvVUxm.css — 200 — 6.1 KiB — 61 ms — h2https://towardsliberty.com/_astro/InfiniteNotes.DxZGDBUa.css/_astro/InfiniteNotes.DxZGDBUa.css https://towardsliberty.com/_astro/InfiniteNotes.DxZGDBUa.css — 200 — 552 B — 57 ms — h2https://towardsliberty.com/_astro/ZapFooter.Bz6xwXiG.css/_astro/ZapFooter.Bz6xwXiG.css https://towardsliberty.com/_astro/ZapFooter.Bz6xwXiG.css — 200 — 457 B — 57 ms — h2https://towardsliberty.com/_astro/Note.D8smipPd.css/_astro/Note.D8smipPd.css https://towardsliberty.com/_astro/Note.D8smipPd.css — 200 — 453 B — 52 ms — h2https://relay.towardsliberty.com/ea78f567b3edce5472744b820bb7a25a33814d6a67bb7695228647fb2eac9b28.jpgrelay.towardsliberty.com/ea78f567b3... https://relay.towardsliberty.com/ea78f567b3edce5472744b820bb7a25a33814d6a67bb7695228647fb2eac9b28.jpg — 200 — 172.2 KiB — 528 ms — h2https://blossom.primal.net/8732b3f504df751c4f4523252d959177f1a1aef152cf6078f531eb6517c8b2db.pngblossom.primal.net/8732b3f504df751c... https://blossom.primal.net/8732b3f504df751c4f4523252d959177f1a1aef152cf6078f531eb6517c8b2db.png — 302 — 206 B — 141 ms — h2https://blossom.primal.net/5f8f1fa16e7ecf76dd3c7f010041481ae790c8b0f3c448507d91abe4d0a51941.jpgblossom.primal.net/5f8f1fa16e7ecf76... https://blossom.primal.net/5f8f1fa16e7ecf76dd3c7f010041481ae790c8b0f3c448507d91abe4d0a51941.jpg — 302 — 206 B — 140 ms — h2https://image.nostr.build/11634d2402a4c037cced83c58387271e1777e3f1099bf5c03d05b83817ce5ee5.jpgimage.nostr.build/11634d2402a4c037c... https://image.nostr.build/11634d2402a4c037cced83c58387271e1777e3f1099bf5c03d05b83817ce5ee5.jpg — 307 — 537 B — 96 ms — h3https://grapheneos.social/system/accounts/avatars/109/415/078/265/909/169/original/c74b93c7870e37a0.pnggrapheneos.social/system/accounts/a... https://grapheneos.social/system/accounts/avatars/109/415/078/265/909/169/original/c74b93c7870e37a0.png — 200 — 8.2 KiB — 385 ms — h2https://npub1jg2qmt3rxjksq65v3nk7dq6yaz2c4uf3qt9epdhxwms2xwd47j2s38a228.blossom.band/b13d0a66e1c1b3f351852b029976f4eff8cb5fbf37c3248fca363db6857ca116.pngnpub1jg2qmt3rxjksq65v3nk7dq6yaz2c4u... https://npub1jg2qmt3rxjksq65v3nk7dq6yaz2c4uf3qt9epdhxwms2xwd47j2s38a228.blossom.band/b13d0a66e1c1b3f351852b029976f4eff8cb5fbf37c3248fca363db6857ca116.png — 307 — 802 B — 555 ms — h2https://image.nostr.build/a45cd91548e9d6e587da80b43ad7d3686898b9a10bb710f8b820aaae28020bd0.jpgimage.nostr.build/a45cd91548e9d6e58... https://image.nostr.build/a45cd91548e9d6e587da80b43ad7d3686898b9a10bb710f8b820aaae28020bd0.jpg — 307 — 503 B — 115 ms — h3https://juraj.bednar.io/assets/socials/profile.jpg?ajuraj.bednar.io/assets/socials/prof... https://juraj.bednar.io/assets/socials/profile.jpg?a — 200 — 27.4 KiB — 297 ms — h2https://blossom.primal.net/b0913fcdc2004c2b26b88c309340c2436ca7d73af0c9b03f9ff747a27120c596.pngblossom.primal.net/b0913fcdc2004c2b... https://blossom.primal.net/b0913fcdc2004c2b26b88c309340c2436ca7d73af0c9b03f9ff747a27120c596.png — 302 — 206 B — 134 ms — h2https://towardsliberty.com/_astro/ZapModal.astro_astro_type_script_index_0_lang.B1aIAS2o.js/_astro/ZapModal.astro_astro_type_s... https://towardsliberty.com/_astro/ZapModal.astro_astro_type_script_index_0_lang.B1aIAS2o.js — 200 — 1.7 KiB — 43 ms — h2https://towardsliberty.com/_astro/Base.astro_astro_type_script_index_0_lang.B86LJwd1.js/_astro/Base.astro_astro_type_scrip... https://towardsliberty.com/_astro/Base.astro_astro_type_script_index_0_lang.B86LJwd1.js — 200 — 442 B — 43 ms — h2https://towardsliberty.com/_astro/Base.astro_astro_type_script_index_1_lang.A5eoScdu.js/_astro/Base.astro_astro_type_scrip... https://towardsliberty.com/_astro/Base.astro_astro_type_script_index_1_lang.A5eoScdu.js — 200 — 194 B — 43 ms — h2https://media.block.xyz/logos/block-jewel_black-on-white.jpgmedia.block.xyz/logos/block-jewel_b... https://media.block.xyz/logos/block-jewel_black-on-white.jpg — 200 — 49.4 KiB — 987 ms — h2https://towardsliberty.com/_astro/client.ax_QIWSw.js/_astro/client.ax_QIWSw.js https://towardsliberty.com/_astro/client.ax_QIWSw.js — 200 — 9.6 KiB — 46 ms — h3https://relay.towardsliberty.com/9c7c4cd28d6afd3d0e378aa1a7e93938d84db0f01472fd38e0b27f85e56f7f08.jpgrelay.towardsliberty.com/9c7c4cd28d... https://relay.towardsliberty.com/9c7c4cd28d6afd3d0e378aa1a7e93938d84db0f01472fd38e0b27f85e56f7f08.jpg — 200 — 91.0 KiB — 431 ms — h2https://image.nostr.build/resp/720p/11634d2402a4c037cced83c58387271e1777e3f1099bf5c03d05b83817ce5ee5.jpgimage.nostr.build/resp/720p/11634d2... https://image.nostr.build/resp/720p/11634d2402a4c037cced83c58387271e1777e3f1099bf5c03d05b83817ce5ee5.jpg — 200 — 5.2 KiB — 74 ms — h3https://image.nostr.build/resp/720p/a45cd91548e9d6e587da80b43ad7d3686898b9a10bb710f8b820aaae28020bd0.jpgimage.nostr.build/resp/720p/a45cd91... https://image.nostr.build/resp/720p/a45cd91548e9d6e587da80b43ad7d3686898b9a10bb710f8b820aaae28020bd0.jpg — 200 — 6.8 KiB — 55 ms — h3https://r2a.primal.net/uploads2/b/09/13/b0913fcdc2004c2b26b88c309340c2436ca7d73af0c9b03f9ff747a27120c596.pngr2a.primal.net/uploads2/b/09/13/b09... https://r2a.primal.net/uploads2/b/09/13/b0913fcdc2004c2b26b88c309340c2436ca7d73af0c9b03f9ff747a27120c596.png — 200 — 1.8 MiB — 360 ms — h2https://r2a.primal.net/uploads2/8/73/2b/8732b3f504df751c4f4523252d959177f1a1aef152cf6078f531eb6517c8b2db.pngr2a.primal.net/uploads2/8/73/2b/873... https://r2a.primal.net/uploads2/8/73/2b/8732b3f504df751c4f4523252d959177f1a1aef152cf6078f531eb6517c8b2db.png — 200 — 13.9 KiB — 285 ms — h2https://r2a.primal.net/uploads2/5/f8/f1/5f8f1fa16e7ecf76dd3c7f010041481ae790c8b0f3c448507d91abe4d0a51941.binr2a.primal.net/uploads2/5/f8/f1/5f8... https://r2a.primal.net/uploads2/5/f8/f1/5f8f1fa16e7ecf76dd3c7f010041481ae790c8b0f3c448507d91abe4d0a51941.bin — 200 — 45.1 KiB — 297 ms — h2https://image.nostr.build/b13d0a66e1c1b3f351852b029976f4eff8cb5fbf37c3248fca363db6857ca116.pngimage.nostr.build/b13d0a66e1c1b3f35... https://image.nostr.build/b13d0a66e1c1b3f351852b029976f4eff8cb5fbf37c3248fca363db6857ca116.png — 307 — 498 B — 36 ms — h3https://image.nostr.build/resp/720p/b13d0a66e1c1b3f351852b029976f4eff8cb5fbf37c3248fca363db6857ca116.pngimage.nostr.build/resp/720p/b13d0a6... https://image.nostr.build/resp/720p/b13d0a66e1c1b3f351852b029976f4eff8cb5fbf37c3248fca363db6857ca116.png — 200 — 9.6 KiB — 375 ms — h3https://towardsliberty.com/favicon.png/favicon.png https://towardsliberty.com/favicon.png — 200 — 1.6 KiB — 38 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
26 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

26

Total Size

0 KB

Oversized

10

26 missing dimensions 23 missing lazy loading
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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