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https://overheadgame.com

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
0
REVIEW
7
PASS
12
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.
95
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.

256 ms

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

529 ms

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

42 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.

504 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.

529 ms

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
22
12 PASS 7 REVIEW
B
JS Execution Cost
949ms total JS execution
REVIEW
949ms total JS execution
Warning::
https://overheadgame.com/_next/static/chunks/0ckmw...: 610ms CPU time
Info::
https://overheadgame.com/_next/static/chunks/05rgw...: 191ms CPU time
Info::
Unattributable: 88ms CPU time
Info::
https://overheadgame.com/: 60ms CPU time
Info::
Third-party scripts: 88ms (9% of total)

Main Thread Breakdown

Other 69% Script Evaluation 21% Script Parsing & Compilation 4% Style & Layout 3%
ScriptTotalScriptingParse/CompileParty
https://overheadgame.com/_next/static/chunks/0ckmwdinhsmkh.js610ms24ms1ms1st
https://overheadgame.com/_next/static/chunks/05rgwsld0z.fz.js191ms164ms14ms1st
Unattributable88ms4ms0ms3rd
https://overheadgame.com/60ms3ms3ms1st
B
JS Bundles
8 scripts, 52 KB unused
REVIEW
8 scripts, 52 KB unused
Warning::
https://overheadgame.com/_next/static/chunks/05rgw...: 29 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://overheadgame.com/_next/static/chunks/16nwd...: 22 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 52 KB
52 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://overheadgame.com/_next/static/chunks/05rgwsld0z.fz.js71 KB29 KB (42%)✓1st
https://overheadgame.com/_next/static/chunks/16nwd95-vqx.2.js39 KB22 KB (58%)✓1st
https://overheadgame.com/_next/static/chunks/171hxc0u17_8b.js8 KB—✓1st
https://overheadgame.com/_next/static/chunks/14qv0zyfqj203.js11 KB—✓1st
https://overheadgame.com/_next/static/chunks/turbopack-0hzwfrdrein8z.js5 KB—✓1st
https://overheadgame.com/_next/static/chunks/031ki__yyhwdn.js2 KB—✓1st
https://overheadgame.com/_next/static/chunks/15s4cd8bhy3a2.js13 KB—✓1st
https://overheadgame.com/_next/static/chunks/0ckmwdinhsmkh.js8 KB—✓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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
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

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::
ETag present — enables conditional (304) responses
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
231 KB transferred, 14 requests
PASS
231 KB transferred, 14 requests
Info::
Page weighs 622 KB (231 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.05 g CO2 per page load
231 KB / 2.4 MB budget
231 KB transferred
14 requests
0.05 g CO2 per page load
JavaScript 156.2 KiB 68%
Fonts 58.8 KiB 25%
Images 6.1 KiB 3%
HTML 6.0 KiB 3%
CSS 3.8 KiB 2%
Other 404 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-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+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 6 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
2 fonts (59 KB)
PASS
2 fonts (59 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

59 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 256 ms LCP 529 mshttps://overheadgame.com/_next/static/media/797e433ab948586e-s.p.0.q-h669a_dqa.woff2797e433ab948586e-s.p.0.... https://overheadgame.com/_next/static/media/797e433ab948586e-s.p.0.q-h669a_dqa.woff2 — 30.8 KiB — 19 ms — font-display: swaphttps://overheadgame.com/_next/static/media/caa3a2e1cccd8315-s.p.16t1db8_9y2o~.woff2caa3a2e1cccd8315-s.p.16... https://overheadgame.com/_next/static/media/caa3a2e1cccd8315-s.p.16t1db8_9y2o~.woff2 — 27.9 KiB — 24 ms — font-display: swap
797e433ab948586e-s.p.0.... woff2 swap
Size 31 KB
Load time 19 ms
Start 70 ms
Risk FOUT — text flashes from fallback to web font
caa3a2e1cccd8315-s.p.16... woff2 swap
Size 28 KB
Load time 24 ms
Start 72 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch
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::
`ETag` present -- conditional GET supported
A+
Page Weight Inventory
14 resources · 231 KB · 52 KB savings available
PASS
14 resources · 231 KB · 52 KB savings available
Info::
Within 1MB page-weight target
Got: 231 KB
Info::
~52 KB of savings available
14 resources · 231.2 KiB · 0 third-party Within 1MB page-weight target
JavaScript 68% · 156.2 KiB
Font 25% · 58.8 KiB
Image 3% · 6.5 KiB
Document 3% · 6.0 KiB
CSS 2% · 3.8 KiB

~51.8 KiB of savings available

Remove unused JavaScript: 51.8 KiB
Network Waterfall
14 requests over 357ms
INFO
0 ms 200 ms 400 ms FCP 256 ms LCP 529 mshttps://overheadgame.com// https://overheadgame.com/ — 200 — 6.0 KiB — 47 ms — h2https://overheadgame.com/_next/static/media/797e433ab948586e-s.p.0.q-h669a_dqa.woff2/_next/static/media/797e433ab948586... https://overheadgame.com/_next/static/media/797e433ab948586e-s.p.0.q-h669a_dqa.woff2 — 200 — 30.8 KiB — 19 ms — h2https://overheadgame.com/_next/static/media/caa3a2e1cccd8315-s.p.16t1db8_9y2o~.woff2/_next/static/media/caa3a2e1cccd831... https://overheadgame.com/_next/static/media/caa3a2e1cccd8315-s.p.16t1db8_9y2o~.woff2 — 200 — 27.9 KiB — 24 ms — h2https://overheadgame.com/_next/static/chunks/0owszf9mu.q1z.css/_next/static/chunks/0owszf9mu.q1z.... https://overheadgame.com/_next/static/chunks/0owszf9mu.q1z.css — 200 — 3.8 KiB — 37 ms — h2https://overheadgame.com/_next/image?url=%2Fhero.png&w=1920&q=75/_next/image?url=%2Fhero.png&w=1920... https://overheadgame.com/_next/image?url=%2Fhero.png&w=1920&q=75 — 200 — 6.1 KiB — 222 ms — h2https://overheadgame.com/_next/static/chunks/171hxc0u17_8b.js/_next/static/chunks/171hxc0u17_8b.... https://overheadgame.com/_next/static/chunks/171hxc0u17_8b.js — 200 — 7.9 KiB — 29 ms — h2https://overheadgame.com/_next/static/chunks/14qv0zyfqj203.js/_next/static/chunks/14qv0zyfqj203.... https://overheadgame.com/_next/static/chunks/14qv0zyfqj203.js — 200 — 10.9 KiB — 50 ms — h2https://overheadgame.com/_next/static/chunks/05rgwsld0z.fz.js/_next/static/chunks/05rgwsld0z.fz.... https://overheadgame.com/_next/static/chunks/05rgwsld0z.fz.js — 200 — 70.8 KiB — 75 ms — h2https://overheadgame.com/_next/static/chunks/16nwd95-vqx.2.js/_next/static/chunks/16nwd95-vqx.2.... https://overheadgame.com/_next/static/chunks/16nwd95-vqx.2.js — 200 — 39.3 KiB — 65 ms — h2https://overheadgame.com/_next/static/chunks/turbopack-0hzwfrdrein8z.js/_next/static/chunks/turbopack-0hzw... https://overheadgame.com/_next/static/chunks/turbopack-0hzwfrdrein8z.js — 200 — 4.7 KiB — 71 ms — h2https://overheadgame.com/_next/static/chunks/031ki__yyhwdn.js/_next/static/chunks/031ki__yyhwdn.... https://overheadgame.com/_next/static/chunks/031ki__yyhwdn.js — 200 — 1.6 KiB — 48 ms — h2https://overheadgame.com/_next/static/chunks/15s4cd8bhy3a2.js/_next/static/chunks/15s4cd8bhy3a2.... https://overheadgame.com/_next/static/chunks/15s4cd8bhy3a2.js — 200 — 13.3 KiB — 32 ms — h2https://overheadgame.com/_next/static/chunks/0ckmwdinhsmkh.js/_next/static/chunks/0ckmwdinhsmkh.... https://overheadgame.com/_next/static/chunks/0ckmwdinhsmkh.js — 200 — 7.8 KiB — 32 ms — h2https://overheadgame.com/favicon.svg/favicon.svg https://overheadgame.com/favicon.svg — 200 — 404 B — 19 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
9% of JavaScript execution is third-party
First-party Third-party 88ms · 0KB · €1/mo
Unattributable
Other
Optional
Execution 88ms
Transfer 0 KB
Monthly Cost €1/mo

How third-party costs are calculated

Image Optimization
1 images, 1 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

1 KB

1 missing alt text 1 missing dimensions
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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