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https://kocumbenim.org

Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
5
PASS
17
INFO
3

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

Mobile Desktop
88
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
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.
90
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.

2.63 s

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

3.37 s

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

56 ms

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

0.023

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

2.68 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.

3.88 s

Page Load Progression

415 ms
830 ms
1.2 s
1.7 s
2.1 s
2.5 s
2.9 s
3.3 s
Checks
26
17 PASS 5 REVIEW 1 FIX
D
Third-Party Impact
Action
85% third-party, 0 ms blocking
FIX
85% third-party, 0 ms blocking
Warning::
Third-party code accounts for 85% of page weight (249.7 KiB of 292.6 KiB)
Info::
Third-party blocking time is low (0 ms)
85%
First-party Third-party
B
JS Execution Cost
958ms total JS execution
REVIEW
958ms total JS execution
Warning::
https://kocumbenim.org/: 579ms CPU time
Info::
Unattributable: 243ms CPU time
Info::
https://esm.sh/@supabase/auth-js@2.119.0/es2022/au...: 136ms CPU time
Info::
Third-party scripts: 136ms (14% of total)

Main Thread Breakdown

Other 53% Style & Layout 30% Script Evaluation 6% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://kocumbenim.org/579ms4ms12ms1st
Unattributable243ms5ms0ms1st
https://esm.sh/@supabase/auth-js@2.119.0/es2022/auth-js.mjs136ms50ms0ms3rd
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

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
293 KB transferred, 19 requests
PASS
293 KB transferred, 19 requests
Info::
Page weighs 586 KB (293 KB transferred)
Info::
19 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
293 KB / 2.4 MB budget
293 KB transferred
19 requests
0.06 g CO2 per page load
Fonts 152.5 KiB 52%
JavaScript 95.9 KiB 33%
HTML 41.7 KiB 14%
Other 1.3 KiB 0%
CSS 1.3 KiB 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
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
3 fonts (152 KB)
PASS
3 fonts (152 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

152 KB total

Render-blocking

0

of 3

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 FCP 2.6 s LCP 3.4 shttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 84 ms — font-display: swaphttps://fonts.gstatic.com/s/spacegrotesk/v22/V8mDoQDjQSkFtoMM3T6r8E7mPbF4C_k3HqU.woff2V8mDoQDjQSkFtoMM3T6r8E7... https://fonts.gstatic.com/s/spacegrotesk/v22/V8mDoQDjQSkFtoMM3T6r8E7mPbF4C_k3HqU.woff2 — 21.8 KiB — 75 ms — font-display: swaphttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7W0Q5n-wU.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7W0Q5n-wU.woff2 — 83.3 KiB — 91 ms — font-display: swap
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 84 ms
Start 752 ms
Risk FOUT — text flashes from fallback to web font
V8mDoQDjQSkFtoMM3T6r8E7... woff2 swap
Size 22 KB
Load time 75 ms
Start 753 ms
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 83 KB
Load time 91 ms
Start 755 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+
JS Bundles
13 scripts, 28 KB unused
PASS
13 scripts, 28 KB unused
Warning::
https://esm.sh/@supabase/auth-js@2.119.0/es2022/au...: 28 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 28 KB
28 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://esm.sh/@supabase/auth-js@2.119.0/es2022/auth-js.mjs33 KB28 KB (83%)✓3rd
https://esm.sh/@supabase/supabase-js@2.119.0/es2022/dist/tracingRegistry.mjs0 KB—✓3rd
https://esm.sh/@supabase/functions-js@2.119.0/es2022/functions-js.mjs2 KB—✓3rd
https://esm.sh/@supabase/postgrest-js@2.119.0/es2022/postgrest-js.mjs7 KB—✓3rd
https://esm.sh/@supabase/realtime-js@2.119.0/es2022/realtime-js.mjs13 KB—✓3rd
https://esm.sh/@supabase/storage-js@2.119.0/es2022/storage-js.mjs8 KB—✓3rd
https://esm.sh/@supabase/supabase-js@21 KB—✓3rd
https://esm.sh/@supabase/supabase-js@2.119.0/es2022/supabase-js.mjs5 KB—✓3rd
https://esm.sh/tslib@2.8.1/es2022/tslib.mjs5 KB—✓3rd
https://esm.sh/node/buffer.mjs10 KB—✓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

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 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
3 server-response signal(s) detected
PASS
3 server-response signal(s) detected
Info::
`Cache-Status` header present (RFC 9211): "Netlify Edge"; fwd=miss; fwd-status=200; stored
The page returns a `Cache-Status` header -- the standardized way for CDNs and caches to communicate per-hop cache state to debugging tools. Format: `Cache-Status: cdn-name; hit; ttl=300` (or `; fwd=miss` / `; fwd=stale`). Standard alternative to vendor-specific `X-Cache` patterns each CDN had historically. Cloudflare, Fastly, and Akamai all support emitting it.
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
19 resources · 293 KB · 28 KB savings available
PASS
19 resources · 293 KB · 28 KB savings available
Info::
Within 1MB page-weight target
Got: 293 KB
Warning::
17 third-party resources (85% of weight)
19 resources · 292.6 KiB · 17 third-party Within 1MB page-weight target
Font 52% · 152.5 KiB
JavaScript 33% · 95.9 KiB
Document 15% · 43.0 KiB
CSS 0% · 1.3 KiB

~27.5 KiB of savings available

Remove unused JavaScript: 27.5 KiB
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
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
Page uses document.write() -- disables Chrome's preload scanner
`document.write()` blocks all parallel resource discovery while it executes. Chrome explicitly disables the preload scanner on connections it judges slow when document.write is detected, serializing the entire subtree load. Almost always third-party ad / analytics legacy code; replacing with createElement + appendChild (or refusing to integrate the offending vendor) recovers significant load-time on mobile.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
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
19 requests over 1003ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 2.6 s LCP 3.4 shttps://kocumbenim.org// https://kocumbenim.org/ — 200 — 41.7 KiB — 130 ms — h2https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@500;600;700&display=swapfonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@500;600;700&display=swap — 200 — 1.3 KiB — 109 ms — h2https://esm.sh/@supabase/supabase-js@2esm.sh/@supabase/supabase-js@2 https://esm.sh/@supabase/supabase-js@2 — 200 — 580 B — 173 ms — h3https://esm.sh/@supabase/auth-js@2.119.0/es2022/auth-js.mjsesm.sh/@supabase/auth-js@2.119.0/es... https://esm.sh/@supabase/auth-js@2.119.0/es2022/auth-js.mjs — 200 — 33.3 KiB — 129 ms — h3https://esm.sh/@supabase/functions-js@2.119.0/es2022/functions-js.mjsesm.sh/@supabase/functions-js@2.119... https://esm.sh/@supabase/functions-js@2.119.0/es2022/functions-js.mjs — 200 — 1.8 KiB — 123 ms — h3https://esm.sh/@supabase/postgrest-js@2.119.0/es2022/postgrest-js.mjsesm.sh/@supabase/postgrest-js@2.119... https://esm.sh/@supabase/postgrest-js@2.119.0/es2022/postgrest-js.mjs — 200 — 6.7 KiB — 138 ms — h3https://esm.sh/@supabase/realtime-js@2.119.0/es2022/realtime-js.mjsesm.sh/@supabase/realtime-js@2.119.... https://esm.sh/@supabase/realtime-js@2.119.0/es2022/realtime-js.mjs — 200 — 12.8 KiB — 129 ms — h3https://esm.sh/@supabase/storage-js@2.119.0/es2022/storage-js.mjsesm.sh/@supabase/storage-js@2.119.0... https://esm.sh/@supabase/storage-js@2.119.0/es2022/storage-js.mjs — 200 — 7.5 KiB — 128 ms — h3https://esm.sh/@supabase/supabase-js@2.119.0/es2022/dist/tracingRegistry.mjsesm.sh/@supabase/supabase-js@2.119.... https://esm.sh/@supabase/supabase-js@2.119.0/es2022/dist/tracingRegistry.mjs — 200 — 378 B — 127 ms — h3https://esm.sh/@supabase/supabase-js@2.119.0/es2022/supabase-js.mjsesm.sh/@supabase/supabase-js@2.119.... https://esm.sh/@supabase/supabase-js@2.119.0/es2022/supabase-js.mjs — 200 — 5.4 KiB — 284 ms — h3https://esm.sh/tslib@2.8.1/es2022/tslib.mjsesm.sh/tslib@2.8.1/es2022/tslib.mjs https://esm.sh/tslib@2.8.1/es2022/tslib.mjs — 200 — 4.9 KiB — 123 ms — h3https://esm.sh/node/buffer.mjsesm.sh/node/buffer.mjs https://esm.sh/node/buffer.mjs — 200 — 10.3 KiB — 112 ms — h3https://esm.sh/iceberg-js@%5E0.8.1?target=es2022esm.sh/iceberg-js@%5E0.8.1?target=e... https://esm.sh/iceberg-js@%5E0.8.1?target=es2022 — 200 — 418 B — 117 ms — h3https://esm.sh/@supabase/phoenix@0.4.5/es2022/phoenix.mjsesm.sh/@supabase/phoenix@0.4.5/es20... https://esm.sh/@supabase/phoenix@0.4.5/es2022/phoenix.mjs — 200 — 9.5 KiB — 124 ms — h3https://esm.sh/iceberg-js@0.8.1/es2022/iceberg-js.mjsesm.sh/iceberg-js@0.8.1/es2022/iceb... https://esm.sh/iceberg-js@0.8.1/es2022/iceberg-js.mjs — 200 — 2.3 KiB — 120 ms — h3https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2fonts.gstatic.com/s/inter/v20/UcC73... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 200 — 47.3 KiB — 84 ms — h3https://fonts.gstatic.com/s/spacegrotesk/v22/V8mDoQDjQSkFtoMM3T6r8E7mPbF4C_k3HqU.woff2fonts.gstatic.com/s/spacegrotesk/v2... https://fonts.gstatic.com/s/spacegrotesk/v22/V8mDoQDjQSkFtoMM3T6r8E7mPbF4C_k3HqU.woff2 — 200 — 21.8 KiB — 75 ms — h3https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7W0Q5n-wU.woff2fonts.gstatic.com/s/inter/v20/UcC73... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7W0Q5n-wU.woff2 — 200 — 83.3 KiB — 91 ms — h3https://kocumbenim.org/favicon.ico/favicon.ico https://kocumbenim.org/favicon.ico — 404 — 1.3 KiB — 131 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
14% of JavaScript execution is third-party
First-party Third-party 136ms · 33KB · ₺5/mo
esm.sh
Other
Optional
Execution 136ms
Transfer 33 KB
Unused 83%
Monthly Cost ₺5/mo

83% of esm.sh's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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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