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http://wonk.sytes.net/76s/pratka2/2015.html

Performance

· 28 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
2
REVIEW
9
PASS
12
INFO
5

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

Mobile Desktop
61
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
63
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
67
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.

1.56 s

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

11.51 s

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

108 ms

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

0.191

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

5.33 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.

11.63 s

Page Load Progression

477 ms
954 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.3 s
3.8 s
Checks
28
12 PASS 9 REVIEW 2 FIX
F
Page Weight Budget
Action
12.0 MB transferred, 88 requests
FIX
12.0 MB transferred, 88 requests
Critical::
Page weighs 18.7 MB (12.0 MB transferred)
Warning::
Images are 10.8 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 10.8 MB
Warning::
JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Info::
88 HTTP requests
Info::
Estimated 2.5 g CO2 per page load
12.0 MB / 2.4 MB budget
12.0 MB transferred
88 requests
2.5 g CO2 per page load
Images 10.8 MiB 89%
JavaScript 1.0 MiB 9%
HTML 149.7 KiB 1%
CSS 60.4 KiB 0%
Fonts 33.9 KiB 0%
Other 909 B 0%
Other 547 B 0%
Other 538 B 0%
Other 0 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

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

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
53 images, 0 KB saveable
REVIEW
53 images, 0 KB saveable
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150928_194... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/jetf.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150624_181... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150702_171... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150718_150... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150718_141... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/pellinkireis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/neoseasy.bmp is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150701_181... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150702_201... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150713_194... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150719_153... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150719_160... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/2015-08-22_1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150909_173... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/speed.gif is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150618_004... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/silentpro.jp... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150702_134... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150718_125... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150718_140... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150718_143... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/2015-08-22_1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150617_124... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150624_182... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150624_195... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150718_143... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150818_204... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/fuel.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150928_194... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150928_194... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150624_181... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150624_183... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/speed.bmp is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150826_182... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150909_170... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150909_172... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150928_191... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/nrgnettimoto... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150720_185... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/2015-08-13_1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150818_210... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150702_133... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150713_183... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/0041656414_h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150623_194... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150624_182... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150701_203... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
http://wonk.sytes.net/76s/pratka2/gfx/20150719_155... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
53 images 10.8 MB
0 oversized -0 KB
51 legacy format
49 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

C
JS Execution Cost
Action
1632ms total JS execution
REVIEW
1632ms total JS execution
Warning::
http://wonk.sytes.net/76s/pratka2/2015.html: 717ms CPU time
Warning::
Unattributable: 603ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-GSWF...: 312ms CPU time
Info::
Third-party scripts: 312ms (19% of total)

Main Thread Breakdown

Other 48% Script Evaluation 18% Style & Layout 16% Rendering 14%
ScriptTotalScriptingParse/CompileParty
http://wonk.sytes.net/76s/pratka2/2015.html717ms18ms1ms1st
Unattributable603ms7ms0ms1st
https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4X312ms268ms40ms3rd
B
JS Bundles
12 scripts, 70 KB unused
REVIEW
12 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
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/am=AAAAQADG/d=1/excm=base,root/br=1/rs=AGKMywGfC6XrY4bub98J-QjNqg90yDckYg/m=root,base160 KB—✓3rd
https://www.youtube.com/s/player/1f293754/player_embed_es6.vflset/en_US/base.js473 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/am=AAAAQADG/d=1/excm=base,root/br=1/rs=AGKMywGfC6XrY4bub98J-QjNqg90yDckYg/m=root,base0 KB—✓3rd
https://www.youtube.com/s/player/1f293754/player_embed_es6.vflset/en_US/base.js0 KB—✓3rd
https://static.doubleclick.net/instream/ad_status.js0 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/ck=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/exm=base,root/excm=base,root/ed=1/br=1/rs=AGKMywFfYh6hPkMgZC-eD0LxeAcENOCylg/m=r78Drb220 KB—✓3rd
https://static.doubleclick.net/instream/ad_status.js0 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/ck=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/exm=base,root/excm=base,root/ed=1/br=1/rs=AGKMywFfYh6hPkMgZC-eD0LxeAcENOCylg/m=r78Drb0 KB—✓3rd
https://www.google.com/js/th/X7cviWXG6eOMwuvFNR9THWLtHBbQNaxLixVsuWNy4oM.js24 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

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
88 resources · 12.0 MB · 70 KB savings available
REVIEW
88 resources · 12.0 MB · 70 KB savings available
Warning::
Page weight 12.0 MB exceeds 1 MB target by 11.0 MB
Got: 12.0 MB Expected: ≤ 1 MB
Info::
~70 KB of savings available
Info::
35 third-party resources (10% of weight)
Info::
24 resources over 200KB
88 resources · 12.0 MiB · 35 third-party 11.0 MiB over 1MB target
Image 89% · 10.8 MiB
JavaScript 9% · 1.0 MiB
Document 1% · 150.2 KiB
CSS 0% · 60.4 KiB
Font 0% · 33.9 KiB
Other 0% · 1.4 KiB

~70.4 KiB of savings available

Remove unused JavaScript: 70.4 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
10% third-party, 0 ms blocking
PASS
10% third-party, 0 ms blocking
Info::
Third-party code accounts for 10% of page weight (1.3 MiB of 12.0 MiB)
Info::
Third-party blocking time is low (0 ms)
90%
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
2 fonts (34 KB)
PASS
2 fonts (34 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

34 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 1.6 s LCP 11.5 shttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 100 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 53 ms — font-display: swap
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 100 ms
Start 3.4 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 0 KB
Load time 53 ms
Start 3.4 s
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+
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).
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
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
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
88 requests over 7012ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 1.6 s LCP 11.5 shttp://wonk.sytes.net/76s/pratka2/2015.html/76s/pratka2/2015.html http://wonk.sytes.net/76s/pratka2/2015.html — 307 — 0 B — 3 ms — http/1.1https://wonk.sytes.net/76s/pratka2/2015.html/76s/pratka2/2015.html https://wonk.sytes.net/76s/pratka2/2015.html — 307 — 0 B — 3.0 s — http/1.1http://wonk.sytes.net/76s/pratka2/2015.html/76s/pratka2/2015.html http://wonk.sytes.net/76s/pratka2/2015.html — 200 — 26.3 KiB — 118 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/jetf.jpg/76s/pratka2/gfx/jetf.jpg http://wonk.sytes.net/76s/pratka2/gfx/jetf.jpg — 200 — 356.0 KiB — 278 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/neoseasy.bmp/76s/pratka2/gfx/neoseasy.bmp http://wonk.sytes.net/76s/pratka2/gfx/neoseasy.bmp — 200 — 394.3 KiB — 266 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/nrgnettimoto.jpg/76s/pratka2/gfx/nrgnettimoto.jpg http://wonk.sytes.net/76s/pratka2/gfx/nrgnettimoto.jpg — 200 — 291.9 KiB — 366 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150617_124311.jpg/76s/pratka2/gfx/20150617_124311.jp... http://wonk.sytes.net/76s/pratka2/gfx/20150617_124311.jpg — 200 — 269.7 KiB — 340 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150618_004727.jpg/76s/pratka2/gfx/20150618_004727.jp... http://wonk.sytes.net/76s/pratka2/gfx/20150618_004727.jpg — 200 — 95.3 KiB — 227 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150623_194437_resize.jpg/76s/pratka2/gfx/20150623_194437_re... http://wonk.sytes.net/76s/pratka2/gfx/20150623_194437_resize.jpg — 200 — 181.3 KiB — 281 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4Xwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4X — 200 — 158.9 KiB — 169 ms — h2https://www.youtube.com/embed/7jay3t3pDDcwww.youtube.com/embed/7jay3t3pDDc https://www.youtube.com/embed/7jay3t3pDDc — 200 — 62.0 KiB — 230 ms — h2https://www.youtube.com/embed/ewfRWiqG-akwww.youtube.com/embed/ewfRWiqG-ak https://www.youtube.com/embed/ewfRWiqG-ak — 200 — 61.4 KiB — 232 ms — h2http://wonk.sytes.net/76s/pratka2/gfx/20150624_181237_resize.jpg/76s/pratka2/gfx/20150624_181237_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_181237_resize.jpg — 200 — 276.6 KiB — 190 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150624_182025_resize.jpg/76s/pratka2/gfx/20150624_182025_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_182025_resize.jpg — 200 — 132.0 KiB — 60 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150624_181525_resize.jpg/76s/pratka2/gfx/20150624_181525_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_181525_resize.jpg — 200 — 146.0 KiB — 104 ms — http/1.1https://www.youtube.com/s/player/1f293754/www-player.csswww.youtube.com/s/player/1f293754/w... https://www.youtube.com/s/player/1f293754/www-player.css — 200 — 57.7 KiB — 62 ms — h2https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/br=1/rs=AGKMywGVImc_6BhuBKEL_FdmXRjGUKCuog/m=root,basewww.youtube.com/s/_/ytembeds/_/ss/k... https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/br=1/rs=AGKMywGVImc_6BhuBKEL_FdmXRjGUKCuog/m=root,base — 200 — 2.7 KiB — 46 ms — h2http://wonk.sytes.net/76s/pratka2/gfx/20150624_182349_resize.jpg/76s/pratka2/gfx/20150624_182349_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_182349_resize.jpg — 200 — 268.4 KiB — 130 ms — http/1.1https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 33.9 KiB — 100 ms — h3https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/am=AAAAQADG/d=1/excm=base,root/br=1/rs=AGKMywGfC6XrY4bub98J-QjNqg90yDckYg/m=root,basewww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/am=AAAAQADG/d=1/excm=base,root/br=1/rs=AGKMywGfC6XrY4bub98J-QjNqg90yDckYg/m=root,base — 200 — 159.7 KiB — 115 ms — h2https://www.youtube.com/s/player/1f293754/player_embed_es6.vflset/en_US/base.jswww.youtube.com/s/player/1f293754/p... https://www.youtube.com/s/player/1f293754/player_embed_es6.vflset/en_US/base.js — 200 — 472.7 KiB — 133 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-GSWFZK5K4X&gtm=45je6a21v9130883679za200zd9130883679xf1&_p=1791293527108&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=1305379287.1791293527&frm=0&ngs=1&pscdl=noapi&rcb=17&sr=412x823&ul=en-us&_s=1&tag_exp=115938465~115938468~118897920~118897930~120213116~120385423~120412527~120469145~120469153~121046263~121046271~121125486&sid=1791293527&sct=1&seg=0&dl=http%3A%2F%2Fwonk.sytes.net%2F76s%2Fpratka2%2F2015.html&dt=Piaggio%20NRG%20DD%20Special%20edition%202013&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=3399region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-GSWFZK5K4X&gtm=45je6a21v9130883679za200zd9130883679xf1&_p=1791293527108&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=1305379287.1791293527&frm=0&ngs=1&pscdl=noapi&rcb=17&sr=412x823&ul=en-us&_s=1&tag_exp=115938465~115938468~118897920~118897930~120213116~120385423~120412527~120469145~120469153~121046263~121046271~121125486&sid=1791293527&sct=1&seg=0&dl=http%3A%2F%2Fwonk.sytes.net%2F76s%2Fpratka2%2F2015.html&dt=Piaggio%20NRG%20DD%20Special%20edition%202013&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=3399 — 204 — 547 B — 144 ms — h2http://wonk.sytes.net/76s/pratka2/gfx/20150624_183011_resize.jpg/76s/pratka2/gfx/20150624_183011_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_183011_resize.jpg — 200 — 314.7 KiB — 88 ms — http/1.1https://www.youtube.com/s/player/1f293754/www-player.csswww.youtube.com/s/player/1f293754/w... https://www.youtube.com/s/player/1f293754/www-player.css — 200 — 0 B — 41 ms — h2https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/br=1/rs=AGKMywGVImc_6BhuBKEL_FdmXRjGUKCuog/m=root,basewww.youtube.com/s/_/ytembeds/_/ss/k... https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/br=1/rs=AGKMywGVImc_6BhuBKEL_FdmXRjGUKCuog/m=root,base — 200 — 0 B — 36 ms — h2https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/am=AAAAQADG/d=1/excm=base,root/br=1/rs=AGKMywGfC6XrY4bub98J-QjNqg90yDckYg/m=root,basewww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.Fn5Xnw-N0p8.2021.O/am=AAAAQADG/d=1/excm=base,root/br=1/rs=AGKMywGfC6XrY4bub98J-QjNqg90yDckYg/m=root,base — 200 — 0 B — 78 ms — h2https://www.youtube.com/s/player/1f293754/player_embed_es6.vflset/en_US/base.jswww.youtube.com/s/player/1f293754/p... https://www.youtube.com/s/player/1f293754/player_embed_es6.vflset/en_US/base.js — 200 — 0 B — 95 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 0 B — 53 ms — h3http://wonk.sytes.net/76s/pratka2/gfx/20150624_195241_resize.jpg/76s/pratka2/gfx/20150624_195241_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_195241_resize.jpg — 200 — 314.4 KiB — 131 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150701_181738_resize.jpg/76s/pratka2/gfx/20150701_181738_re... http://wonk.sytes.net/76s/pratka2/gfx/20150701_181738_resize.jpg — 200 — 190.3 KiB — 63 ms — http/1.1
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 1.6 s LCP 11.5 shttp://wonk.sytes.net/76s/pratka2/2015.html/76s/pratka2/2015.html http://wonk.sytes.net/76s/pratka2/2015.html — 307 — 0 B — 3 ms — http/1.1https://wonk.sytes.net/76s/pratka2/2015.html/76s/pratka2/2015.html https://wonk.sytes.net/76s/pratka2/2015.html — 307 — 0 B — 3.0 s — http/1.1http://wonk.sytes.net/76s/pratka2/2015.html/76s/pratka2/2015.html http://wonk.sytes.net/76s/pratka2/2015.html — 200 — 26.3 KiB — 118 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/jetf.jpg/76s/pratka2/gfx/jetf.jpg http://wonk.sytes.net/76s/pratka2/gfx/jetf.jpg — 200 — 356.0 KiB — 278 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/neoseasy.bmp/76s/pratka2/gfx/neoseasy.bmp http://wonk.sytes.net/76s/pratka2/gfx/neoseasy.bmp — 200 — 394.3 KiB — 266 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/nrgnettimoto.jpg/76s/pratka2/gfx/nrgnettimoto.jpg http://wonk.sytes.net/76s/pratka2/gfx/nrgnettimoto.jpg — 200 — 291.9 KiB — 366 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150617_124311.jpg/76s/pratka2/gfx/20150617_124311.jp... http://wonk.sytes.net/76s/pratka2/gfx/20150617_124311.jpg — 200 — 269.7 KiB — 340 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150618_004727.jpg/76s/pratka2/gfx/20150618_004727.jp... http://wonk.sytes.net/76s/pratka2/gfx/20150618_004727.jpg — 200 — 95.3 KiB — 227 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150623_194437_resize.jpg/76s/pratka2/gfx/20150623_194437_re... http://wonk.sytes.net/76s/pratka2/gfx/20150623_194437_resize.jpg — 200 — 181.3 KiB — 281 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4Xwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-GSWFZK5K4X — 200 — 158.9 KiB — 169 ms — h2https://www.youtube.com/embed/7jay3t3pDDcwww.youtube.com/embed/7jay3t3pDDc https://www.youtube.com/embed/7jay3t3pDDc — 200 — 62.0 KiB — 230 ms — h2https://www.youtube.com/embed/ewfRWiqG-akwww.youtube.com/embed/ewfRWiqG-ak https://www.youtube.com/embed/ewfRWiqG-ak — 200 — 61.4 KiB — 232 ms — h2http://wonk.sytes.net/76s/pratka2/gfx/20150624_181237_resize.jpg/76s/pratka2/gfx/20150624_181237_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_181237_resize.jpg — 200 — 276.6 KiB — 190 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150624_182025_resize.jpg/76s/pratka2/gfx/20150624_182025_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_182025_resize.jpg — 200 — 132.0 KiB — 60 ms — http/1.1http://wonk.sytes.net/76s/pratka2/gfx/20150624_181525_resize.jpg/76s/pratka2/gfx/20150624_181525_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_181525_resize.jpg — 200 — 146.0 KiB — 104 ms — http/1.1https://www.youtube.com/s/player/1f293754/www-player.csswww.youtube.com/s/player/1f293754/w... https://www.youtube.com/s/player/1f293754/www-player.css — 200 — 57.7 KiB — 62 ms — h2https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/br=1/rs=AGKMywGVImc_6BhuBKEL_FdmXRjGUKCuog/m=root,basewww.youtube.com/s/_/ytembeds/_/ss/k... https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.T_le-qGe-a8.L.W.O/am=AAAAQADG/d=1/br=1/rs=AGKMywGVImc_6BhuBKEL_FdmXRjGUKCuog/m=root,base — 200 — 2.7 KiB — 46 ms — h2http://wonk.sytes.net/76s/pratka2/gfx/20150624_182349_resize.jpg/76s/pratka2/gfx/20150624_182349_re... http://wonk.sytes.net/76s/pratka2/gfx/20150624_182349_resize.jpg — 200 — 268.4 KiB — 130 ms — http/1.1https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 33.9 KiB — 100 ms — 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Monthly Cost €3/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 312ms and costs ~€3/month

Google Tag Manager takes 312ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

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
49 images, 10984 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

49

Total Size

10984 KB

49 missing alt text 49 missing dimensions 49 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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