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https://www.bleriotpardubice.cz

Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
4
REVIEW
7
PASS
12
INFO
3

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

Mobile Desktop
46
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

12.51 s

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

35.57 s

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

374 ms

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

0.000

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

12.51 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.

36.85 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
26
12 PASS 7 REVIEW 4 FIX
F
Page Weight Budget
Action
9.1 MB transferred, 67 requests
FIX
9.1 MB transferred, 67 requests
Critical::
Page weighs 13.7 MB (9.1 MB transferred)
Warning::
Images are 7.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 7.1 MB
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
CSS is 506 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 506 KB
Info::
Fonts are 269 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 269 KB
Info::
67 HTTP requests
Info::
Estimated 1.9 g CO2 per page load
9.1 MB / 2.4 MB budget
9.1 MB transferred
67 requests
1.9 g CO2 per page load
Images 7.1 MiB 78%
JavaScript 1.2 MiB 13%
CSS 506.2 KiB 5%
Fonts 269.4 KiB 3%
HTML 51.6 KiB 1%
Other 14.8 KiB 0%
Other 45 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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

F
JS Execution Cost
Action
3629ms total JS execution
FIX
3629ms total JS execution
Warning::
https://www.gstatic.com/recaptcha/releases/A7KpaEA...: 1363ms CPU time
Warning::
https://img.wedos.website/bundles/WEDOS_skeleton.b...: 825ms CPU time
Warning::
Unattributable: 709ms CPU time
Warning::
https://www.bleriotpardubice.cz/: 406ms CPU time
Info::
https://maps.googleapis.com/maps/api/js?key=AIzaSy...: 217ms CPU time
Warning::
Third-party scripts: 2514ms (69% of total)

Main Thread Breakdown

Script Evaluation 50% Other 21% Style & Layout 14% Script Parsing & Compilation 8% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js1363ms1148ms149ms3rd
https://img.wedos.website/bundles/WEDOS_skeleton.bundle.js825ms349ms91ms3rd
Unattributable709ms10ms0ms1st
https://www.bleriotpardubice.cz/406ms65ms4ms1st
https://maps.googleapis.com/maps/api/js?key=AIzaSyDo5XtRqXPE2-rQGDJ_tug8WI1xeZd0Qcc&callback=initMap217ms157ms49ms3rd
https://img.wedos.website/bundles/WEDOS_skeleton.css109ms0ms0ms3rd
F
JS Bundles
Action
11 scripts, 773 KB unused
FIX
11 scripts, 773 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/A7KpaEA...: 178 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/A7KpaEA...: 178 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/A7KpaEA...: 178 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/A7KpaEA...: 178 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://maps.googleapis.com/maps/api/js?key=AIzaSy...: 62 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 773 KB
773 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js374 KB178 KB (48%)✓3rd
https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js374 KB178 KB (48%)✓3rd
https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js0 KB178 KB (48%)✓3rd
https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js0 KB178 KB (48%)✓3rd
https://maps.googleapis.com/maps/api/js?key=AIzaSyDo5XtRqXPE2-rQGDJ_tug8WI1xeZd0Qcc&callback=initMap100 KB62 KB (62%)✓3rd
https://img.wedos.website/bundles/WEDOS_skeleton.bundle.js141 KB—✓3rd
https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit1 KB—✓3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js33 KB—✓3rd
https://www.menicka.cz/js/js.jquery.magnific-popup.min.js?v=6.13620 KB—✓3rd
https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=A7KpaEASfhDcK0nXxgQEyyYv0 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

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

D
Page Weight Inventory
Action
67 resources · 9.1 MB · 773 KB savings available
FIX
67 resources · 9.1 MB · 773 KB savings available
Warning::
Page weight 9.1 MB exceeds 1 MB target by 8.1 MB
Got: 9.1 MB Expected: ≤ 1 MB
Info::
~773 KB of savings available
Info::
31 third-party resources (22% of weight)
Info::
21 resources over 200KB
67 resources · 9.1 MiB · 31 third-party 8.1 MiB over 1MB target
Image 78% · 7.1 MiB
JavaScript 13% · 1.2 MiB
CSS 5% · 506.2 KiB
Font 3% · 269.4 KiB
Document 1% · 51.6 KiB
Other 0% · 45 B

~773.3 KiB of savings available

Remove unused JavaScript: 773.3 KiB
C
Image Optimization
Action
37 images, 0 KB saveable
REVIEW
37 images, 0 KB saveable
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bleriotpardubice.cz/images/uploads/862... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
37 images 7.1 MB
0 oversized -0 KB
35 legacy format
31 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

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
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main 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
Main HTML max-age=360 (~6min)
REVIEW
Main HTML max-age=360 (~6min)
Info::
Main HTML cached for 6 minutes -- mild staleness risk
Got: private, max-age=360, must-revalidate
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.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
2 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
Warning::
Total JS execution time is 3.6 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Third-Party Impact
22% third-party, 0 ms blocking
PASS
22% third-party, 0 ms blocking
Info::
Third-party code accounts for 22% of page weight (2.0 MiB of 9.1 MiB)
Info::
Third-party blocking time is low (0 ms)
78%
22%
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
7 fonts (269 KB)
PASS
7 fonts (269 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

269 KB total

Render-blocking

0

of 7

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 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s FCP 12.5 s LCP 35.6 sdata:application/font-woff;base64,d09GRgABAAAAAHQ0ABQAAAABC0AAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAHQ0ABQAAAABC0AAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA… — 29.1 KiB — 137 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAHS0ABQAAAABCHwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAHS0ABQAAAABCHwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA… — 29.2 KiB — 116 ms — font-display: swaphttps://img.wedos.website/bundles/af7ae505a9eed503f8b8e6982036873e.woff2af7ae505a9eed503f8b8e69... https://img.wedos.website/bundles/af7ae505a9eed503f8b8e6982036873e.woff2 — 75.9 KiB — 538 ms — font-display: swaphttps://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2JTUSjIg1_i6t8kCHKm459Wl... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 34.7 KiB — 18 ms — font-display: swaphttps://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WdhyyTh89ZNpQ.woff2JTUSjIg1_i6t8kCHKm459Wd... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WdhyyTh89ZNpQ.woff2 — 66.7 KiB — 23 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 23 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 0 ms — font-display: swap
font-woff;base64,d09GRg... woff swap
Size 29 KB
Load time 137 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
font-woff;base64,d09GRg... woff swap
Size 29 KB
Load time 116 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
af7ae505a9eed503f8b8e69... woff2 swap
Size 76 KB
Load time 538 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
JTUSjIg1_i6t8kCHKm459Wl... woff2 swap
Size 35 KB
Load time 18 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
JTUSjIg1_i6t8kCHKm459Wd... woff2 swap
Size 67 KB
Load time 23 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 23 ms
Start 2.3 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 0 KB
Load time 0 ms
Start 3.5 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)

Fixing the unchecked items could save ~17 KB and ~34 ms

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: User-Agent,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+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+
HTTP Caching
max-age=360 (6 minutes)
PASS
max-age=360 (6 minutes)
Info::
Cache-Control header is set
Got: private, max-age=360, must-revalidate
Info::
Effective TTL: 6 minutes (max-age=360)
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

private, max-age=360, must-revalidate

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
max-age360Cache for 6 minutes
must-revalidate—Must recheck with server after expiry
Effective TTL: 360 seconds
Network Waterfall
67 requests over 3463ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s FCP 12.5 s LCP 35.6 shttps://www.bleriotpardubice.cz// https://www.bleriotpardubice.cz/ — 200 — 7.4 KiB — 345 ms — h2https://img.wedos.website/bundles/WEDOS_skeleton.cssimg.wedos.website/bundles/WEDOS_ske... https://img.wedos.website/bundles/WEDOS_skeleton.css — 200 — 443.8 KiB — 842 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536a95c89f_Menu01.jpeg?0.8101522828562706/images/uploads/8621/660536a95c89f_... https://www.bleriotpardubice.cz/images/uploads/8621/660536a95c89f_Menu01.jpeg?0.8101522828562706 — 200 — 176.9 KiB — 674 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605372e2b92e_Menu04.jpeg?0.9066317069237162/images/uploads/8621/6605372e2b92e_... https://www.bleriotpardubice.cz/images/uploads/8621/6605372e2b92e_Menu04.jpeg?0.9066317069237162 — 200 — 228.7 KiB — 953 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605376a61859_Menu07.jpeg?0.3535754608509083/images/uploads/8621/6605376a61859_... https://www.bleriotpardubice.cz/images/uploads/8621/6605376a61859_Menu07.jpeg?0.3535754608509083 — 200 — 220.5 KiB — 927 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537a856819_Menu10.jpeg?0.6591023638497486/images/uploads/8621/660537a856819_... https://www.bleriotpardubice.cz/images/uploads/8621/660537a856819_Menu10.jpeg?0.6591023638497486 — 200 — 239.6 KiB — 942 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605380a4d62b_Menu13.jpeg?0.395757143733213/images/uploads/8621/6605380a4d62b_... https://www.bleriotpardubice.cz/images/uploads/8621/6605380a4d62b_Menu13.jpeg?0.395757143733213 — 200 — 143.5 KiB — 838 ms — h2https://img.wedos.website/bundles/WEDOS_skeleton.bundle.jsimg.wedos.website/bundles/WEDOS_ske... https://img.wedos.website/bundles/WEDOS_skeleton.bundle.js — 200 — 140.5 KiB — 712 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/66053865f0b5a_Menu16.jpeg?0.29381932297853197/images/uploads/8621/66053865f0b5a_... https://www.bleriotpardubice.cz/images/uploads/8621/66053865f0b5a_Menu16.jpeg?0.29381932297853197 — 200 — 272.7 KiB — 961 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.8665693067074356/images/uploads/8621/660536c5c7e51_... https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.8665693067074356 — 200 — 203.0 KiB — 939 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537436629c_Menu05.jpeg?0.07922914331214881/images/uploads/8621/660537436629c_... https://www.bleriotpardubice.cz/images/uploads/8621/660537436629c_Menu05.jpeg?0.07922914331214881 — 200 — 276.5 KiB — 957 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605377e96ca9_Menu08.jpeg?0.7613425981697357/images/uploads/8621/6605377e96ca9_... https://www.bleriotpardubice.cz/images/uploads/8621/6605377e96ca9_Menu08.jpeg?0.7613425981697357 — 200 — 227.2 KiB — 923 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537d237b08_Menu11.jpeg?0.7648099983121488/images/uploads/8621/660537d237b08_... https://www.bleriotpardubice.cz/images/uploads/8621/660537d237b08_Menu11.jpeg?0.7648099983121488 — 200 — 231.1 KiB — 952 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605382172224_Menu14.jpeg?0.9725510279331899/images/uploads/8621/6605382172224_... https://www.bleriotpardubice.cz/images/uploads/8621/6605382172224_Menu14.jpeg?0.9725510279331899 — 200 — 275.7 KiB — 954 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.12427469639817246/images/uploads/8621/660536c5c7e51_... https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.12427469639817246 — 200 — 203.0 KiB — 935 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536dceb6b9_Menu03.jpeg?0.05032101934372313/images/uploads/8621/660536dceb6b9_... https://www.bleriotpardubice.cz/images/uploads/8621/660536dceb6b9_Menu03.jpeg?0.05032101934372313 — 200 — 239.5 KiB — 953 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/66053756178e1_Menu06.jpeg?0.7141229036769823/images/uploads/8621/66053756178e1_... https://www.bleriotpardubice.cz/images/uploads/8621/66053756178e1_Menu06.jpeg?0.7141229036769823 — 200 — 233.5 KiB — 948 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605379441eed_Menu09.jpeg?0.05033650806636025/images/uploads/8621/6605379441eed_... https://www.bleriotpardubice.cz/images/uploads/8621/6605379441eed_Menu09.jpeg?0.05033650806636025 — 200 — 208.3 KiB — 935 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537ec4b17a_Menu12.jpeg?0.4751264595204612/images/uploads/8621/660537ec4b17a_... https://www.bleriotpardubice.cz/images/uploads/8621/660537ec4b17a_Menu12.jpeg?0.4751264595204612 — 200 — 205.0 KiB — 937 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605384385d69_Menu15.jpeg?0.9351405717791601/images/uploads/8621/6605384385d69_... https://www.bleriotpardubice.cz/images/uploads/8621/6605384385d69_Menu15.jpeg?0.9351405717791601 — 200 — 204.6 KiB — 938 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.8453039368174589/images/uploads/8621/6551c5b77b2a2_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.8453039368174589 — 200 — 175.1 KiB — 920 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.6157722873725298/images/uploads/8621/6551c5b77b2a2_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.6157722873725298 — 200 — 175.1 KiB — 879 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5fa9dc81_38980ec6-4456-46aa-a06d-273900ca74ee.jpeg?0.9894869160464725/images/uploads/8621/6551c5fa9dc81_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5fa9dc81_38980ec6-4456-46aa-a06d-273900ca74ee.jpeg?0.9894869160464725 — 200 — 182.0 KiB — 921 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca10b9fc8_7c139eae-8527-425b-b0d5-006e93f1f1d1.jpeg?0.5758826137373652/images/uploads/8621/6551ca10b9fc8_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca10b9fc8_7c139eae-8527-425b-b0d5-006e93f1f1d1.jpeg?0.5758826137373652 — 200 — 185.3 KiB — 925 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/655b5387238a1_536053be-db29-4363-96ee-a0cdaab2e41a.jpeg?0.07499209787168803/images/uploads/8621/655b5387238a1_... https://www.bleriotpardubice.cz/images/uploads/8621/655b5387238a1_536053be-db29-4363-96ee-a0cdaab2e41a.jpeg?0.07499209787168803 — 200 — 188.2 KiB — 925 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c9c0014fd_0e2ed154-0405-4ef0-97de-0949fe94f4ed.jpeg?0.6460699404012054/images/uploads/8621/6551c9c0014fd_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c9c0014fd_0e2ed154-0405-4ef0-97de-0949fe94f4ed.jpeg?0.6460699404012054 — 200 — 218.0 KiB — 942 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca3b37234_26df5991-42d4-46d1-b8df-bc7df3a42aed.jpeg?0.5738459635088513/images/uploads/8621/6551ca3b37234_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca3b37234_26df5991-42d4-46d1-b8df-bc7df3a42aed.jpeg?0.5738459635088513 — 200 — 191.5 KiB — 876 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca59a1dc7_09718a1a-e359-4bbc-ba26-cc4fca1bd448.jpeg?0.28643133575705626/images/uploads/8621/6551ca59a1dc7_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca59a1dc7_09718a1a-e359-4bbc-ba26-cc4fca1bd448.jpeg?0.28643133575705626 — 200 — 169.3 KiB — 918 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca7ae5424_25753e9c-d395-43b7-a8a1-3ab4df756edb.jpeg?0.5364816206965719/images/uploads/8621/6551ca7ae5424_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca7ae5424_25753e9c-d395-43b7-a8a1-3ab4df756edb.jpeg?0.5364816206965719 — 200 — 142.1 KiB — 882 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca9789130_abc29908-763a-462b-8d03-e4fdd34cbe0d.jpeg?0.8246447370190386/images/uploads/8621/6551ca9789130_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca9789130_abc29908-763a-462b-8d03-e4fdd34cbe0d.jpeg?0.8246447370190386 — 200 — 176.7 KiB — 918 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s FCP 12.5 s LCP 35.6 shttps://www.bleriotpardubice.cz// https://www.bleriotpardubice.cz/ — 200 — 7.4 KiB — 345 ms — h2https://img.wedos.website/bundles/WEDOS_skeleton.cssimg.wedos.website/bundles/WEDOS_ske... https://img.wedos.website/bundles/WEDOS_skeleton.css — 200 — 443.8 KiB — 842 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536a95c89f_Menu01.jpeg?0.8101522828562706/images/uploads/8621/660536a95c89f_... https://www.bleriotpardubice.cz/images/uploads/8621/660536a95c89f_Menu01.jpeg?0.8101522828562706 — 200 — 176.9 KiB — 674 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605372e2b92e_Menu04.jpeg?0.9066317069237162/images/uploads/8621/6605372e2b92e_... https://www.bleriotpardubice.cz/images/uploads/8621/6605372e2b92e_Menu04.jpeg?0.9066317069237162 — 200 — 228.7 KiB — 953 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605376a61859_Menu07.jpeg?0.3535754608509083/images/uploads/8621/6605376a61859_... https://www.bleriotpardubice.cz/images/uploads/8621/6605376a61859_Menu07.jpeg?0.3535754608509083 — 200 — 220.5 KiB — 927 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537a856819_Menu10.jpeg?0.6591023638497486/images/uploads/8621/660537a856819_... https://www.bleriotpardubice.cz/images/uploads/8621/660537a856819_Menu10.jpeg?0.6591023638497486 — 200 — 239.6 KiB — 942 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605380a4d62b_Menu13.jpeg?0.395757143733213/images/uploads/8621/6605380a4d62b_... https://www.bleriotpardubice.cz/images/uploads/8621/6605380a4d62b_Menu13.jpeg?0.395757143733213 — 200 — 143.5 KiB — 838 ms — h2https://img.wedos.website/bundles/WEDOS_skeleton.bundle.jsimg.wedos.website/bundles/WEDOS_ske... https://img.wedos.website/bundles/WEDOS_skeleton.bundle.js — 200 — 140.5 KiB — 712 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/66053865f0b5a_Menu16.jpeg?0.29381932297853197/images/uploads/8621/66053865f0b5a_... https://www.bleriotpardubice.cz/images/uploads/8621/66053865f0b5a_Menu16.jpeg?0.29381932297853197 — 200 — 272.7 KiB — 961 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.8665693067074356/images/uploads/8621/660536c5c7e51_... https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.8665693067074356 — 200 — 203.0 KiB — 939 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537436629c_Menu05.jpeg?0.07922914331214881/images/uploads/8621/660537436629c_... https://www.bleriotpardubice.cz/images/uploads/8621/660537436629c_Menu05.jpeg?0.07922914331214881 — 200 — 276.5 KiB — 957 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605377e96ca9_Menu08.jpeg?0.7613425981697357/images/uploads/8621/6605377e96ca9_... https://www.bleriotpardubice.cz/images/uploads/8621/6605377e96ca9_Menu08.jpeg?0.7613425981697357 — 200 — 227.2 KiB — 923 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537d237b08_Menu11.jpeg?0.7648099983121488/images/uploads/8621/660537d237b08_... https://www.bleriotpardubice.cz/images/uploads/8621/660537d237b08_Menu11.jpeg?0.7648099983121488 — 200 — 231.1 KiB — 952 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605382172224_Menu14.jpeg?0.9725510279331899/images/uploads/8621/6605382172224_... https://www.bleriotpardubice.cz/images/uploads/8621/6605382172224_Menu14.jpeg?0.9725510279331899 — 200 — 275.7 KiB — 954 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.12427469639817246/images/uploads/8621/660536c5c7e51_... https://www.bleriotpardubice.cz/images/uploads/8621/660536c5c7e51_Menu02.jpeg?0.12427469639817246 — 200 — 203.0 KiB — 935 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660536dceb6b9_Menu03.jpeg?0.05032101934372313/images/uploads/8621/660536dceb6b9_... https://www.bleriotpardubice.cz/images/uploads/8621/660536dceb6b9_Menu03.jpeg?0.05032101934372313 — 200 — 239.5 KiB — 953 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/66053756178e1_Menu06.jpeg?0.7141229036769823/images/uploads/8621/66053756178e1_... https://www.bleriotpardubice.cz/images/uploads/8621/66053756178e1_Menu06.jpeg?0.7141229036769823 — 200 — 233.5 KiB — 948 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605379441eed_Menu09.jpeg?0.05033650806636025/images/uploads/8621/6605379441eed_... https://www.bleriotpardubice.cz/images/uploads/8621/6605379441eed_Menu09.jpeg?0.05033650806636025 — 200 — 208.3 KiB — 935 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/660537ec4b17a_Menu12.jpeg?0.4751264595204612/images/uploads/8621/660537ec4b17a_... https://www.bleriotpardubice.cz/images/uploads/8621/660537ec4b17a_Menu12.jpeg?0.4751264595204612 — 200 — 205.0 KiB — 937 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6605384385d69_Menu15.jpeg?0.9351405717791601/images/uploads/8621/6605384385d69_... https://www.bleriotpardubice.cz/images/uploads/8621/6605384385d69_Menu15.jpeg?0.9351405717791601 — 200 — 204.6 KiB — 938 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.8453039368174589/images/uploads/8621/6551c5b77b2a2_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.8453039368174589 — 200 — 175.1 KiB — 920 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.6157722873725298/images/uploads/8621/6551c5b77b2a2_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5b77b2a2_a3b06e57-c481-4a60-ac38-abba7bbff7d5.jpeg?0.6157722873725298 — 200 — 175.1 KiB — 879 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5fa9dc81_38980ec6-4456-46aa-a06d-273900ca74ee.jpeg?0.9894869160464725/images/uploads/8621/6551c5fa9dc81_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5fa9dc81_38980ec6-4456-46aa-a06d-273900ca74ee.jpeg?0.9894869160464725 — 200 — 182.0 KiB — 921 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca10b9fc8_7c139eae-8527-425b-b0d5-006e93f1f1d1.jpeg?0.5758826137373652/images/uploads/8621/6551ca10b9fc8_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca10b9fc8_7c139eae-8527-425b-b0d5-006e93f1f1d1.jpeg?0.5758826137373652 — 200 — 185.3 KiB — 925 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/655b5387238a1_536053be-db29-4363-96ee-a0cdaab2e41a.jpeg?0.07499209787168803/images/uploads/8621/655b5387238a1_... https://www.bleriotpardubice.cz/images/uploads/8621/655b5387238a1_536053be-db29-4363-96ee-a0cdaab2e41a.jpeg?0.07499209787168803 — 200 — 188.2 KiB — 925 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c9c0014fd_0e2ed154-0405-4ef0-97de-0949fe94f4ed.jpeg?0.6460699404012054/images/uploads/8621/6551c9c0014fd_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c9c0014fd_0e2ed154-0405-4ef0-97de-0949fe94f4ed.jpeg?0.6460699404012054 — 200 — 218.0 KiB — 942 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca3b37234_26df5991-42d4-46d1-b8df-bc7df3a42aed.jpeg?0.5738459635088513/images/uploads/8621/6551ca3b37234_... https://www.bleriotpardubice.cz/images/uploads/8621/6551ca3b37234_26df5991-42d4-46d1-b8df-bc7df3a42aed.jpeg?0.5738459635088513 — 200 — 191.5 KiB — 876 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551ca59a1dc7_09718a1a-e359-4bbc-ba26-cc4fca1bd448.jpeg?0.28643133575705626/images/uploads/8621/6551ca59a1dc7_... 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https://www.bleriotpardubice.cz/images/uploads/8621/6551cd04f23f0_facebook-icon.png?0.8151575600607568 — 200 — 3.2 KiB — 559 ms — h2https://maps.googleapis.com/maps/api/js?key=AIzaSyDo5XtRqXPE2-rQGDJ_tug8WI1xeZd0Qcc&callback=initMapmaps.googleapis.com/maps/api/js?key... https://maps.googleapis.com/maps/api/js?key=AIzaSyDo5XtRqXPE2-rQGDJ_tug8WI1xeZd0Qcc&callback=initMap — 200 — 100.4 KiB — 118 ms — h2https://fonts.googleapis.com/css?family=Montserrat:300,400,700,900fonts.googleapis.com/css?family=Mon... https://fonts.googleapis.com/css?family=Montserrat:300,400,700,900 — 200 — 1.1 KiB — 42 ms — h2https://fonts.googleapis.com/css?family=Faster+One|Gruppo|Montserrat+Subrayada:400,700|Open+Sans:100,300,400,700,800|Poiret+One|Raleway:100,200,300,400,700,900fonts.googleapis.com/css?family=Fas... https://fonts.googleapis.com/css?family=Faster+One|Gruppo|Montserrat+Subrayada:400,700|Open+Sans:100,300,400,700,800|Poiret+One|Raleway:100,200,300,400,700,900 — 200 — 2.5 KiB — 48 ms — h2https://www.menicka.cz/api/iframe/?id=8705www.menicka.cz/api/iframe/?id=8705 https://www.menicka.cz/api/iframe/?id=8705 — 200 — 14.4 KiB — 903 ms — http/1.1https://www.bleriotpardubice.cz/images/uploads/8621/6544f505bb8c7_2023-10-26-10.53.05.jpg/images/uploads/8621/6544f505bb8c7_... https://www.bleriotpardubice.cz/images/uploads/8621/6544f505bb8c7_2023-10-26-10.53.05.jpg — 200 — 699.6 KiB — 183 ms — h2data:application/font-woff;base64,d09GRgABAAAAAHQ0ABQAAAABC0AAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA…data:application/font-woff;base64,d... data:application/font-woff;base64,d09GRgABAAAAAHQ0ABQAAAABC0AAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA… — 200 — 29.1 KiB — 137 ms — datadata:application/font-woff;base64,d09GRgABAAAAAHS0ABQAAAABCHwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA…data:application/font-woff;base64,d... data:application/font-woff;base64,d09GRgABAAAAAHS0ABQAAAABCHwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABCQVNFA… — 200 — 29.2 KiB — 116 ms — datahttps://img.wedos.website/bundles/af7ae505a9eed503f8b8e6982036873e.woff2img.wedos.website/bundles/af7ae505a... https://img.wedos.website/bundles/af7ae505a9eed503f8b8e6982036873e.woff2 — 200 — 75.9 KiB — 538 ms — h3https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2fonts.gstatic.com/s/montserrat/v31/... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 200 — 34.7 KiB — 18 ms — h3https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WdhyyTh89ZNpQ.woff2fonts.gstatic.com/s/montserrat/v31/... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WdhyyTh89ZNpQ.woff2 — 200 — 66.7 KiB — 23 ms — h3https://www.google.com/recaptcha/api.js?onload=onloadCallback&amp;render=explicitwww.google.com/recaptcha/api.js?onl... https://www.google.com/recaptcha/api.js?onload=onloadCallback&amp;render=explicit — 200 — 1.0 KiB — 42 ms — h3https://www.bleriotpardubice.cz/images/uploads/8621/6551c3b2a3a24_41b0cd83-7e32-443b-b1a8-a0095bcf0c73.jpeg/images/uploads/8621/6551c3b2a3a24_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c3b2a3a24_41b0cd83-7e32-443b-b1a8-a0095bcf0c73.jpeg — 200 — 204.6 KiB — 155 ms — h2https://www.bleriotpardubice.cz/images/uploads/8621/6551c5fa9dc81_38980ec6-4456-46aa-a06d-273900ca74ee.jpeg/images/uploads/8621/6551c5fa9dc81_... https://www.bleriotpardubice.cz/images/uploads/8621/6551c5fa9dc81_38980ec6-4456-46aa-a06d-273900ca74ee.jpeg — 200 — 182.0 KiB — 147 ms — h2https://maps.googleapis.com/maps/api/mapsjs/gen_204?csp_test=truemaps.googleapis.com/maps/api/mapsjs... https://maps.googleapis.com/maps/api/mapsjs/gen_204?csp_test=true — 200 — 45 B — 42 ms — h3https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js — 200 — 374.0 KiB — 39 ms 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373.5 KiB — 37 ms — h2https://www.menicka.cz/css/css.magnific-popup.css?v=6.136www.menicka.cz/css/css.magnific-pop... https://www.menicka.cz/css/css.magnific-popup.css?v=6.136 — 200 — 16.8 KiB — 269 ms — http/1.1https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js — 200 — 32.9 KiB — 26 ms — h2https://www.menicka.cz/js/js.jquery.magnific-popup.min.js?v=6.136www.menicka.cz/js/js.jquery.magnifi... https://www.menicka.cz/js/js.jquery.magnific-popup.min.js?v=6.136 — 200 — 20.0 KiB — 424 ms — http/1.1data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFQAAANICAYAAABZl8i8AAAAIGNIUk0AAHomAACAhAAA+gAAAIDoA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFQAAANICAYAAABZl8i8AAAAIGNIUk0AAHomAACAhAAA+gAAAIDoA… — 200 — 0 B — 1 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
69% of JavaScript execution is third-party
First-party Third-party 2514ms · 685KB · Kč310/mo
www.gstatic.com
Other
Costly
Execution 1363ms
Transfer 0 KB
Unused 48%
Monthly Cost Kč168/mo
img.wedos.website
Other
Costly
Execution 825ms
Transfer 141 KB
Monthly Cost Kč102/mo
maps.googleapis.com
Other
Costly
Execution 217ms
Transfer 100 KB
Unused 62%
Monthly Cost Kč27/mo
img.wedos.website
Other
Optional
Execution 109ms
Transfer 444 KB
Monthly Cost Kč13/mo

These scripts may cost more than they're worth

  • www.gstatic.com adds 1363ms and costs ~Kč168/month
  • img.wedos.website adds 825ms and costs ~Kč102/month
  • maps.googleapis.com adds 217ms and costs ~Kč27/month

69% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

www.gstatic.com takes 1363ms 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

img.wedos.website takes 825ms 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

maps.googleapis.com takes 217ms 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

62% of maps.googleapis.com'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

Image Optimization
33 images, 6529 KB total, 2100 KB wasted
INFO

Image Optimization Audit

Total Images

33

Total Size

6529 KB

Oversized

15

Wasted

2100 KB

2 missing alt text 33 missing dimensions 31 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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