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https://voidlogue.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
0
REVIEW
5
PASS
9
INFO
2

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

Mobile Desktop
68
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
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.

3.60 s

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

3.90 s

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

304 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.135

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

3.60 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
16
9 PASS 5 REVIEW
B
Third-Party Impact
57% third-party, 0 ms blocking
REVIEW
57% third-party, 0 ms blocking
Warning::
Third-party code accounts for 57% of page weight (348.6 KiB of 611.0 KiB)
Info::
Third-party blocking time is low (0 ms)
43%
57%
First-party Third-party
C
JS Execution Cost
Action
1962ms total JS execution
REVIEW
1962ms total JS execution
Warning::
https://voidlogue.com/: 1132ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-VT5N...: 548ms CPU time
Warning::
Unattributable: 283ms CPU time
Info::
Third-party scripts: 831ms (42% of total)

Main Thread Breakdown

Style & Layout 37% Other 26% Script Evaluation 19% Script Parsing & Compilation 10% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://voidlogue.com/1132ms15ms5ms1st
https://www.googletagmanager.com/gtag/js?id=G-VT5N58FXGH548ms322ms199ms3rd
Unattributable283ms34ms0ms3rd
B
JS Bundles
2 scripts, 132 KB unused
REVIEW
2 scripts, 132 KB unused
Warning::
https://voidlogue.com/assets/app-1bb3c371e679d2024...: 67 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-VT5N...: 65 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 132 KB
132 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://voidlogue.com/assets/app-1bb3c371e679d20248ae22d7b9f16f71.js?vsn=d96 KB67 KB (70%)✓1st
https://www.googletagmanager.com/gtag/js?id=G-VT5N58FXGH157 KB65 KB (41%)✓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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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

max-age=0, private, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
private—Only browser cache, not CDN/proxy
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
611 KB transferred, 14 requests
PASS
611 KB transferred, 14 requests
Info::
Page weighs 1.4 MB (611 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
611 KB / 2.4 MB budget
611 KB transferred
14 requests
0.13 g CO2 per page load
JavaScript 252.2 KiB 41%
Fonts 190.3 KiB 31%
Images 107.3 KiB 18%
CSS 30.2 KiB 5%
Other 20.3 KiB 3%
HTML 9.4 KiB 2%
Other 713 B 0%
Other 546 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 107 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
4 fonts (190 KB)
PASS
4 fonts (190 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

190 KB total

Render-blocking

0

of 4

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 FCP 3.6 s LCP 3.9 shttps://fonts.gstatic.com/s/dmsans/v17/rP2Yp2ywxg089UriI5-g4vlH9VoD8Cmcqbu0-K6z9mXg.woff2rP2Yp2ywxg089UriI5-g4vl... https://fonts.gstatic.com/s/dmsans/v17/rP2Yp2ywxg089UriI5-g4vlH9VoD8Cmcqbu0-K6z9mXg.woff2 — 36.1 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/fraunces/v38/6NU58FyLNQOQZAnv9ZwNjucMHVn85Ni7emAe9lKqZTnbB-gzTK0K1ChjeveQ7ZXk8g.woff26NU58FyLNQOQZAnv9ZwNjuc... https://fonts.gstatic.com/s/fraunces/v38/6NU58FyLNQOQZAnv9ZwNjucMHVn85Ni7emAe9lKqZTnbB-gzTK0K1ChjeveQ7ZXk8g.woff2 — 79.8 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/fraunces/v38/6NU78FyLNQOQZAnv9bYEvDiIdE9Ea92uemAk_WBq8U_9v0c2Wa0KxC9TeP2Xz5c.woff26NU78FyLNQOQZAnv9bYEvDi... https://fonts.gstatic.com/s/fraunces/v38/6NU78FyLNQOQZAnv9bYEvDiIdE9Ea92uemAk_WBq8U_9v0c2Wa0KxC9TeP2Xz5c.woff2 — 65.8 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/dmmono/v16/aFTU7PB1QTsUX8KYthqQBK6PYK0.woff2aFTU7PB1QTsUX8KYthqQBK6... https://fonts.gstatic.com/s/dmmono/v16/aFTU7PB1QTsUX8KYthqQBK6PYK0.woff2 — 8.5 KiB — 0 ms — font-display: swap
rP2Yp2ywxg089UriI5-g4vl... woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
6NU58FyLNQOQZAnv9ZwNjuc... woff2 swap
Size 80 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
6NU78FyLNQOQZAnv9bYEvDi... woff2 swap
Size 66 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
aFTU7PB1QTsUX8KYthqQBK6... woff2 swap
Size 9 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
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
4
preload
—
dns-prefetch
—
prefetch
—

4 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
14 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
42% of JavaScript execution is third-party
First-party Third-party 831ms · 157KB · $11/mo
Google Tag Manager
Tag Manager
Costly
Execution 548ms
Transfer 157 KB
Unused 41%
Monthly Cost $7/mo
Unattributable
Other
Costly
Execution 283ms
Transfer 0 KB
Monthly Cost $4/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 548ms and costs ~$7/month
  • Unattributable adds 283ms and costs ~$4/month

42% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Google Tag Manager takes 548ms 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 283ms 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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