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Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
2
REVIEW
9
PASS
8
INFO
5

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

Mobile Desktop
82
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
69
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
70
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
82
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.

593 ms

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

1.14 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.

0.217

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

2.28 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.

1.14 s

Page Load Progression

442 ms
884 ms
1.3 s
1.8 s
2.2 s
2.7 s
3.1 s
3.5 s
Checks
24
8 PASS 9 REVIEW 2 FIX
F
Page Weight Budget
Action
10.2 MB transferred, 63 requests
FIX
10.2 MB transferred, 63 requests
Critical::
Page weighs 10.6 MB (10.2 MB transferred)
Warning::
Images are 10.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 10.1 MB
Info::
63 HTTP requests
Info::
Estimated 2.1 g CO2 per page load
10.2 MB / 2.4 MB budget
10.2 MB transferred
63 requests
2.1 g CO2 per page load
Images 10.1 MiB 98%
JavaScript 158.9 KiB 2%
HTML 31.6 KiB 0%
Other 547 B 0%
Other 492 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

D
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
57 images, 0 KB saveable
REVIEW
57 images, 0 KB saveable
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20131125_2058... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20131203_1634... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1832... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140907_0911... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/p8270220.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130829_2015... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130901_1231... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130828_1634... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20131220_1845... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1129... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150423_1817... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150418_1210... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130828_1633... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140209_1326... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140903_2136... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150419_1601... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20131127_1859... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1815... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140209_1531... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140903_2036... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150419_1525... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130828_1633... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140611_1921... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150703_1730... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150422_2221... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130901_1147... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/SNAK0033.JPG is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130905_2110... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140902_1905... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130829_1811... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1831... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140611_1841... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140906_1804... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130901_1150... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20131218_1105... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140209_1339... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150422_2226... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150702_1857... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130901_1147... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20131203_1815... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1831... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140209_1131... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130829_1845... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130901_1156... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150418_1143... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130828_1719... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/SNAK0032.JPG is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1814... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140209_1521... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150422_2147... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150702_2108... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150703_1256... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/SNAK0029.JPG is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20130905_1812... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150422_2147... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20150425_1954... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka/gfx/20140206_1832... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
57 images 10.1 MB
0 oversized -0 KB
57 legacy format
57 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Execution Cost
544ms total JS execution
REVIEW
544ms total JS execution
Warning::
Unattributable: 306ms CPU time
Info::
http://wonk.sytes.net/76s/pratka/index.html: 174ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-GSWF...: 64ms CPU time
Info::
Third-party scripts: 64ms (12% of total)

Main Thread Breakdown

Other 64% Rendering 12% Script Evaluation 11% Style & Layout 11%
ScriptTotalScriptingParse/CompileParty
Unattributable306ms2ms0ms1st
http://wonk.sytes.net/76s/pratka/index.html174ms4ms0ms1st
https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4X64ms54ms9ms3rd
B
JS Bundles
1 scripts, 70 KB unused
REVIEW
1 scripts, 70 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-GSWF...: 70 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 70 KB
70 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4X159 KB70 KB (44%)✓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

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
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
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
Page Weight Inventory
Action
63 resources · 10.2 MB · 70 KB savings available
REVIEW
63 resources · 10.2 MB · 70 KB savings available
Warning::
Page weight 10.2 MB exceeds 1 MB target by 9.2 MB
Got: 10.2 MB Expected: ≤ 1 MB
Info::
~70 KB of savings available
Info::
2 third-party resources (2% of weight)
Info::
23 resources over 200KB
63 resources · 10.2 MiB · 2 third-party 9.2 MiB over 1MB target
Image 98% · 10.1 MiB
JavaScript 2% · 158.9 KiB
Document 0% · 32.1 KiB
Other 0% · 547 B

~70.5 KiB of savings available

Remove unused JavaScript: 70.5 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
2% third-party, 0 ms blocking
PASS
2% third-party, 0 ms blocking
Info::
Third-party code accounts for 2% of page weight (159.4 KiB of 10.2 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-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+
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+
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+
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::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
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
63 requests over 6124ms
INFO
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http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140206_181517.jpg/76s/pratka/gfx/20140206_181517.jpg http://wonk.sytes.net/76s/pratka/gfx/20140206_181517.jpg — 200 — 138.2 KiB — 185 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140209_113140.jpg/76s/pratka/gfx/20140209_113140.jpg http://wonk.sytes.net/76s/pratka/gfx/20140209_113140.jpg — 200 — 120.1 KiB — 116 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140209_153159_14.jpg/76s/pratka/gfx/20140209_153159_14.... http://wonk.sytes.net/76s/pratka/gfx/20140209_153159_14.jpg — 200 — 142.5 KiB — 230 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140209_132618.jpg/76s/pratka/gfx/20140209_132618.jpg http://wonk.sytes.net/76s/pratka/gfx/20140209_132618.jpg — 200 — 232.2 KiB — 222 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140209_133913.jpg/76s/pratka/gfx/20140209_133913.jpg http://wonk.sytes.net/76s/pratka/gfx/20140209_133913.jpg — 200 — 235.6 KiB — 362 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140209_152150.jpg/76s/pratka/gfx/20140209_152150.jpg http://wonk.sytes.net/76s/pratka/gfx/20140209_152150.jpg — 200 — 155.5 KiB — 225 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140611_184118.jpg/76s/pratka/gfx/20140611_184118.jpg http://wonk.sytes.net/76s/pratka/gfx/20140611_184118.jpg — 200 — 206.4 KiB — 354 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140611_192155.jpg/76s/pratka/gfx/20140611_192155.jpg http://wonk.sytes.net/76s/pratka/gfx/20140611_192155.jpg — 200 — 179.0 KiB — 270 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140902_190505.jpg/76s/pratka/gfx/20140902_190505.jpg http://wonk.sytes.net/76s/pratka/gfx/20140902_190505.jpg — 200 — 256.1 KiB — 363 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140903_213601.jpg/76s/pratka/gfx/20140903_213601.jpg http://wonk.sytes.net/76s/pratka/gfx/20140903_213601.jpg — 200 — 167.4 KiB — 124 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140903_203629.jpg/76s/pratka/gfx/20140903_203629.jpg http://wonk.sytes.net/76s/pratka/gfx/20140903_203629.jpg — 200 — 225.7 KiB — 242 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140906_180445.jpg/76s/pratka/gfx/20140906_180445.jpg http://wonk.sytes.net/76s/pratka/gfx/20140906_180445.jpg — 200 — 197.1 KiB — 199 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20140907_091159.jpg/76s/pratka/gfx/20140907_091159.jpg http://wonk.sytes.net/76s/pratka/gfx/20140907_091159.jpg — 200 — 171.3 KiB — 241 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150418_114353_resize.jpg/76s/pratka/gfx/20150418_114353_res... http://wonk.sytes.net/76s/pratka/gfx/20150418_114353_resize.jpg — 200 — 182.8 KiB — 240 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150418_121037_resize.jpg/76s/pratka/gfx/20150418_121037_res... http://wonk.sytes.net/76s/pratka/gfx/20150418_121037_resize.jpg — 200 — 83.1 KiB — 104 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150419_152517_resize.jpg/76s/pratka/gfx/20150419_152517_res... http://wonk.sytes.net/76s/pratka/gfx/20150419_152517_resize.jpg — 200 — 237.4 KiB — 257 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150419_160117_resize.jpg/76s/pratka/gfx/20150419_160117_res... http://wonk.sytes.net/76s/pratka/gfx/20150419_160117_resize.jpg — 200 — 250.6 KiB — 422 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150422_214708_resize.jpg/76s/pratka/gfx/20150422_214708_res... http://wonk.sytes.net/76s/pratka/gfx/20150422_214708_resize.jpg — 200 — 223.1 KiB — 278 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150422_214700_resize.jpg/76s/pratka/gfx/20150422_214700_res... http://wonk.sytes.net/76s/pratka/gfx/20150422_214700_resize.jpg — 200 — 223.7 KiB — 391 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150422_222125_resize.jpg/76s/pratka/gfx/20150422_222125_res... http://wonk.sytes.net/76s/pratka/gfx/20150422_222125_resize.jpg — 200 — 204.7 KiB — 253 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150422_222615_resize.jpg/76s/pratka/gfx/20150422_222615_res... http://wonk.sytes.net/76s/pratka/gfx/20150422_222615_resize.jpg — 200 — 176.5 KiB — 296 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150423_181725.jpg/76s/pratka/gfx/20150423_181725.jpg http://wonk.sytes.net/76s/pratka/gfx/20150423_181725.jpg — 200 — 172.3 KiB — 207 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150425_195405.jpg/76s/pratka/gfx/20150425_195405.jpg http://wonk.sytes.net/76s/pratka/gfx/20150425_195405.jpg — 200 — 191.0 KiB — 139 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150702_210805_resize.jpg/76s/pratka/gfx/20150702_210805_res... http://wonk.sytes.net/76s/pratka/gfx/20150702_210805_resize.jpg — 200 — 292.2 KiB — 366 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150702_185738_resize.jpg/76s/pratka/gfx/20150702_185738_res... http://wonk.sytes.net/76s/pratka/gfx/20150702_185738_resize.jpg — 200 — 257.6 KiB — 274 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150703_173042_resize.jpg/76s/pratka/gfx/20150703_173042_res... http://wonk.sytes.net/76s/pratka/gfx/20150703_173042_resize.jpg — 200 — 248.3 KiB — 276 ms — http/1.1http://wonk.sytes.net/76s/pratka/gfx/20150703_125633_resize.jpg/76s/pratka/gfx/20150703_125633_res... http://wonk.sytes.net/76s/pratka/gfx/20150703_125633_resize.jpg — 200 — 147.1 KiB — 143 ms — http/1.1http://wonk.sytes.net/favicon.ico/favicon.ico http://wonk.sytes.net/favicon.ico — 404 — 492 B — 82 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
12% of JavaScript execution is third-party
First-party Third-party 64ms · 159KB · €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 64ms
Transfer 159 KB
Unused 44%
Monthly Cost €1/mo

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-09-07 — 2026-10-04)

LCP (p75)

3698 ms

46% good

INP (p75)

0 ms

0% good

CLS (p75)

0.040

80% good

FCP (p75)

3439 ms

TTFB (p75)

3253 ms

Image Optimization
57 images, 10282 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

57

Total Size

10282 KB

56 missing alt text 57 missing dimensions 56 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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