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https://coduf.com

Performance

· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
1
REVIEW
5
PASS
13
INFO
4

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.
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.

495 ms

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

535 ms

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.

495 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.

539 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
23
13 PASS 5 REVIEW 1 FIX
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store
Info::
ETag present — enables conditional (304) responses
Cache-Control

no-store

DirectiveValueMeaning
no-store—Never cache this response
B
Third-Party Impact
54% third-party, 0 ms blocking
REVIEW
54% third-party, 0 ms blocking
Warning::
Third-party code accounts for 54% of page weight (190.9 KiB of 350.7 KiB)
Info::
Third-party blocking time is low (0 ms)
46%
54%
First-party Third-party
B
JS Bundles
3 scripts, 116 KB unused
REVIEW
3 scripts, 116 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-746N...: 75 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://coduf.com/assets/vendor-IIVtdmKT.js: 41 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 116 KB
116 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-746NB401PH178 KB75 KB (42%)✓3rd
https://coduf.com/assets/vendor-IIVtdmKT.js83 KB41 KB (50%)✓1st
https://coduf.com/assets/index-Dtysm3xu.js22 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.
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+
Page Weight Budget
351 KB transferred, 21 requests
PASS
351 KB transferred, 21 requests
Info::
Page weighs 1000 KB (351 KB transferred)
Info::
21 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
351 KB / 2.4 MB budget
351 KB transferred
21 requests
0.07 g CO2 per page load
JavaScript 283.0 KiB 81%
Images 41.2 KiB 12%
CSS 13.5 KiB 4%
HTML 10.1 KiB 3%
Other 1.6 KiB 0%
Other 835 B 0%
Other 543 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
5 images, 0 KB saveable
PASS
5 images, 0 KB saveable
Info::
All images are well-optimized
5 images 33 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
195ms total JS execution
PASS
195ms total JS execution
Info::
https://www.googletagmanager.com/gtag/js?id=G-746N...: 75ms CPU time
Info::
https://coduf.com/: 60ms CPU time
Info::
Unattributable: 60ms CPU time
Info::
Third-party scripts: 75ms (38% of total)

Main Thread Breakdown

Script Evaluation 43% Other 28% Style & Layout 17% Script Parsing & Compilation 4% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-746NB401PH75ms61ms10ms3rd
https://coduf.com/60ms2ms1ms1st
Unattributable60ms2ms0ms1st
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+
Document Compression
Document response uses brotli
PASS
Document 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 uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-store
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::
`ETag` present -- conditional GET supported
A
Page Weight Inventory
21 resources · 351 KB · 116 KB savings available
PASS
21 resources · 351 KB · 116 KB savings available
Info::
Within 1MB page-weight target
Got: 351 KB
Info::
~116 KB of savings available
Warning::
11 third-party resources (54% of weight)
21 resources · 350.7 KiB · 11 third-party Within 1MB page-weight target
JavaScript 81% · 283.0 KiB
Image 12% · 42.0 KiB
CSS 4% · 13.5 KiB
Document 3% · 10.1 KiB
Other 1% · 2.1 KiB

~115.6 KiB of savings available

Remove unused JavaScript: 115.6 KiB
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
21 requests over 845ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 495 ms LCP 535 mshttps://coduf.com// https://coduf.com/ — 200 — 10.1 KiB — 201 ms — h2https://coduf.com/assets/index-Dtysm3xu.js/assets/index-Dtysm3xu.js https://coduf.com/assets/index-Dtysm3xu.js — 200 — 22.1 KiB — 137 ms — h2https://coduf.com/assets/index-CVqTlJwv.css/assets/index-CVqTlJwv.css https://coduf.com/assets/index-CVqTlJwv.css — 200 — 13.5 KiB — 75 ms — h2https://coduf.com/images/desktop/workspace-1200.webp/images/desktop/workspace-1200.webp https://coduf.com/images/desktop/workspace-1200.webp — 200 — 10.5 KiB — 73 ms — h2https://coduf.com/assets/vendor-IIVtdmKT.js/assets/vendor-IIVtdmKT.js https://coduf.com/assets/vendor-IIVtdmKT.js — 200 — 82.6 KiB — 192 ms — h2https://coduf.com/site.webmanifest/site.webmanifest https://coduf.com/site.webmanifest — 200 — 1.6 KiB — 195 ms — h2https://coduf.com/coduf-icon-v2.svg/coduf-icon-v2.svg https://coduf.com/coduf-icon-v2.svg — 200 — 1.0 KiB — 114 ms — h2data:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:…data:image/svg+xml,%3csvg%20fill='c... data:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:… — 200 — 1.6 KiB — 39 ms — datadata:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:…data:image/svg+xml,%3csvg%20fill='c... data:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:… — 200 — 368 B — 41 ms — datadata:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20…data:image/svg+xml,%3csvg%20height=... data:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20… — 200 — 2.1 KiB — 42 ms — datadata:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20…data:image/svg+xml,%3csvg%20height=... data:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20… — 200 — 2.8 KiB — 43 ms — datadata:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:…data:image/svg+xml,%3csvg%20fill='c... data:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:… — 200 — 372 B — 45 ms — datadata:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:…data:image/svg+xml,%3csvg%20fill='c... data:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:… — 200 — 568 B — 46 ms — datadata:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20…data:image/svg+xml,%3csvg%20height=... data:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20… — 200 — 655 B — 46 ms — datadata:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20…data:image/svg+xml,%3csvg%20height=... data:image/svg+xml,%3csvg%20height='1em'%20style='flex:none;line-height:1'%20viewBox='0%200%2024%20… — 200 — 357 B — 47 ms — datadata:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:…data:image/svg+xml,%3csvg%20fill='c... data:image/svg+xml,%3csvg%20fill='currentColor'%20fill-rule='evenodd'%20height='1em'%20style='flex:… — 200 — 3.2 KiB — 48 ms — datahttps://coduf.com/images/desktop/sidebar-1200.webp/images/desktop/sidebar-1200.webp https://coduf.com/images/desktop/sidebar-1200.webp — 200 — 17.6 KiB — 74 ms — h2https://coduf.com/coduf-icon-v2.svg/coduf-icon-v2.svg https://coduf.com/coduf-icon-v2.svg — 200 — 417 B — 67 ms — h2https://coduf.com/coduf-icon-v2.svg/coduf-icon-v2.svg https://coduf.com/coduf-icon-v2.svg — 200 — 418 B — 129 ms — h2https://www.googletagmanager.com/gtag/js?id=G-746NB401PHwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-746NB401PH — 200 — 178.3 KiB — 203 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-746NB401PH&gtm=45je6b21v9283538298za208zd9283538298xf1&_p=1793786560810&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=248880250.1793786561&frm=0&ngs=1&pscdl=noapi&rcb=9&sr=800x600&uaa=x86&uab=64&uafvl=Not%253AA-Brand%3B8.0.0.0%7CChromium%3B156.0.8078.79&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=115938465~115938468~118897920~118897930~119860442~120213116~120385423~120412528~120420414~120469145~120469153~121246026~121246034~123691370~123814184~123814946&sid=1793786561&sct=1&seg=0&dl=https%3A%2F%2Fcoduf.com%2F&dt=Coduf%20%E2%80%94%20Give%20your%20ideas%20shape.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.anonymize_ip=true&tfd=777region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-746NB401PH&gtm=45je6b21v9283538298za208zd9283538298xf1&_p=1793786560810&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=248880250.1793786561&frm=0&ngs=1&pscdl=noapi&rcb=9&sr=800x600&uaa=x86&uab=64&uafvl=Not%253AA-Brand%3B8.0.0.0%7CChromium%3B156.0.8078.79&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=115938465~115938468~118897920~118897930~119860442~120213116~120385423~120412528~120420414~120469145~120469153~121246026~121246034~123691370~123814184~123814946&sid=1793786561&sct=1&seg=0&dl=https%3A%2F%2Fcoduf.com%2F&dt=Coduf%20%E2%80%94%20Give%20your%20ideas%20shape.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.anonymize_ip=true&tfd=777 — 204 — 543 B — 68 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
38% of JavaScript execution is third-party
First-party Third-party 75ms · 178KB · ₺3/mo
Google Tag Manager
Tag Manager
Optional
Execution 75ms
Transfer 178 KB
Unused 42%
Monthly Cost ₺3/mo

How third-party costs are calculated

Image Optimization
22 images, 19 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

22

Total Size

19 KB

18 missing dimensions 11 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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