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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
97
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.
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.

564 ms

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

1.15 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.

1.07 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.

1.16 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
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
55% third-party, 0 ms blocking
REVIEW
55% third-party, 0 ms blocking
Warning::
Third-party code accounts for 55% of page weight (190.9 KiB of 349.8 KiB)
Info::
Third-party blocking time is low (0 ms)
45%
55%
First-party Third-party
B
JS Bundles
3 scripts, 114 KB unused
REVIEW
3 scripts, 114 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-746N...: 74 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://coduf.com/assets/vendor-IIVtdmKT.js: 40 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 114 KB
114 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-746NB401PH178 KB74 KB (42%)✓3rd
https://coduf.com/assets/vendor-IIVtdmKT.js83 KB40 KB (49%)✓1st
https://coduf.com/assets/index-D2Nat8q0.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
350 KB transferred, 23 requests
PASS
350 KB transferred, 23 requests
Info::
Page weighs 996 KB (350 KB transferred)
Info::
23 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
350 KB / 2.4 MB budget
350 KB transferred
23 requests
0.07 g CO2 per page load
JavaScript 282.4 KiB 81%
Images 41.6 KiB 12%
CSS 13.5 KiB 4%
HTML 9.1 KiB 3%
Other 2.4 KiB 1%
Other 863 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 32 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
217ms total JS execution
PASS
217ms total JS execution
Info::
https://www.googletagmanager.com/gtag/js?id=G-746N...: 99ms CPU time
Info::
https://coduf.com/: 61ms CPU time
Info::
Unattributable: 57ms CPU time
Info::
Third-party scripts: 99ms (46% of total)

Main Thread Breakdown

Script Evaluation 45% Other 27% Style & Layout 14% Script Parsing & Compilation 6% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-746NB401PH99ms76ms15ms3rd
https://coduf.com/61ms2ms0ms1st
Unattributable57ms2ms0ms1st
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
23 resources · 350 KB · 114 KB savings available
PASS
23 resources · 350 KB · 114 KB savings available
Info::
Within 1MB page-weight target
Got: 350 KB
Info::
~114 KB of savings available
Warning::
11 third-party resources (55% of weight)
23 resources · 349.8 KiB · 11 third-party Within 1MB page-weight target
JavaScript 81% · 282.4 KiB
Image 12% · 41.9 KiB
CSS 4% · 13.5 KiB
Document 3% · 9.1 KiB
Other 1% · 2.9 KiB

~114.4 KiB of savings available

Remove unused JavaScript: 114.4 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
23 requests over 1457ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 564 ms LCP 1.2 shttps://coduf.com// https://coduf.com/ — 200 — 9.1 KiB — 207 ms — h2https://coduf.com/assets/index-D2Nat8q0.js/assets/index-D2Nat8q0.js https://coduf.com/assets/index-D2Nat8q0.js — 200 — 21.5 KiB — 143 ms — h2https://coduf.com/assets/index-CVqTlJwv.css/assets/index-CVqTlJwv.css https://coduf.com/assets/index-CVqTlJwv.css — 200 — 13.5 KiB — 141 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 — 80 ms — h2https://coduf.com/assets/vendor-IIVtdmKT.js/assets/vendor-IIVtdmKT.js https://coduf.com/assets/vendor-IIVtdmKT.js — 200 — 82.5 KiB — 205 ms — h2https://coduf.com/coduf-icon-v2.svg/coduf-icon-v2.svg https://coduf.com/coduf-icon-v2.svg — 200 — 1.0 KiB — 97 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 — 33 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 — 36 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 — 37 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 — 38 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 — 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 — 568 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 — 655 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 — 357 B — 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 — 3.2 KiB — 44 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 — 73 ms — h2https://coduf.com/api/auth/session/api/auth/session https://coduf.com/api/auth/session — 200 — 722 B — 896 ms — h2https://coduf.com/api/site/public-config/api/site/public-config https://coduf.com/api/site/public-config — 200 — 1.2 KiB — 134 ms — h2https://coduf.com/coduf-icon-v2.svg/coduf-icon-v2.svg https://coduf.com/coduf-icon-v2.svg — 200 — 394 B — 71 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://coduf.com/api/csp-report/api/csp-report https://coduf.com/api/csp-report — 204 — 469 B — 825 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-746NB401PH&gtm=45je6b21v9283538298za208zd9283538298xf1&_p=1793778316098&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=238656167.1793778316&frm=0&ngs=1&pscdl=noapi&rcb=12&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=115938466~115938468~118897920~118897930~120213116~120385422~120412528~120420416~120469145~120469153~121246026~121246034~123691370~123814944&sid=1793778316&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=797region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-746NB401PH&gtm=45je6b21v9283538298za208zd9283538298xf1&_p=1793778316098&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=238656167.1793778316&frm=0&ngs=1&pscdl=noapi&rcb=12&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=115938466~115938468~118897920~118897930~120213116~120385422~120412528~120420416~120469145~120469153~121246026~121246034~123691370~123814944&sid=1793778316&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=797 — 204 — 543 B — 72 ms — h2https://coduf.com/coduf-icon-v2.svg/coduf-icon-v2.svg https://coduf.com/coduf-icon-v2.svg — 200 — 462 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
46% of JavaScript execution is third-party
First-party Third-party 99ms · 178KB · ₺4/mo
Google Tag Manager
Tag Manager
Optional
Execution 99ms
Transfer 178 KB
Unused 42%
Monthly Cost ₺4/mo

46% 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

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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