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https://phoca.cz

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
78
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
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.

854 ms

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

3.37 s

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

0 ms

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

0.082

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

1.50 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

3.38 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
15
5 PASS 3 REVIEW 5 FIX
D
Page Weight Budget
Action
2.3 MB transferred, 88 requests
FIX
2.3 MB transferred, 88 requests
Info::
Page weighs 4.4 MB (2.3 MB transferred)
Warning::
JavaScript is 746 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 746 KB
Info::
Fonts are 501 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 501 KB
Info::
88 HTTP requests
Info::
Estimated 0.48 g CO2 per page load
2.3 MB / 2.4 MB budget
2.3 MB transferred
88 requests
0.48 g CO2 per page load
Images 839.2 KiB 36%
JavaScript 746.1 KiB 32%
Fonts 501.2 KiB 21%
CSS 177.3 KiB 8%
HTML 71.7 KiB 3%
Other 8.1 KiB 0%
Other 5.2 KiB 0%
Other 547 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.3 MiB of 2.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
28 scripts, 354 KB unused
FIX
28 scripts, 354 KB unused
Warning::
https://pagead2.googlesyndication.com/pagead/manag...: 148 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-K1Z2...: 64 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.google.com/cse/static/element/dc329f57...: 52 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://fundingchoicesmessages.google.com/i/ca-pub...: 36 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cse.google.com/adsense/search/async-ads.js: 32 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 354 KB
354 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604200101/show_ads_impl_fy2021.js?bust=31098019177 KB148 KB (83%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-K1Z2G5152Y154 KB64 KB (42%)✓3rd
https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__es.js?usqp=CAM%3D103 KB52 KB (51%)✓3rd
https://fundingchoicesmessages.google.com/i/ca-pub-8548720326871505?href=https%3A%2F%2Fwww.phoca.cz&ers=270 KB36 KB (52%)✓3rd
https://cse.google.com/adsense/search/async-ads.js44 KB32 KB (73%)✓3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-854872032687150555 KB22 KB (41%)✓3rd
https://www.phoca.cz/media/vendor/bootstrap/js/carousel.min.js?5.3.82 KB—✓3rd
https://cse.google.com/cse.js?cx=67e6dbb0e341944c04 KB—✓3rd
https://www.phoca.cz/media/vendor/bootstrap/js/collapse.min.js?5.3.82 KB—✓3rd
https://www.phoca.cz/media/vendor/bootstrap/js/dropdown.min.js?5.3.82 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
88 resources · 2.3 MB · 354 KB savings available
FIX
88 resources · 2.3 MB · 354 KB savings available
Warning::
Page weight 1.3 MB over 1MB target
Got: 2.3 MB Expected: ≤ 1 MB
Info::
~354 KB of savings available
Warning::
87 third-party resources (100% of weight)
Info::
2 resources over 200KB
88 resources · 2.3 MiB · 87 third-party 1.3 MiB over 1MB target
Image 36% · 844.3 KiB
JavaScript 32% · 746.1 KiB
Font 21% · 501.2 KiB
CSS 8% · 177.3 KiB
Document 3% · 72.1 KiB
Other 0% · 8.5 KiB

~354.0 KiB of savings available

Remove unused JavaScript: 354.0 KiB
F
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.

No Cache-Control header

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

C
Image Optimization
Action
44 images, 0 KB saveable
REVIEW
44 images, 0 KB saveable
Warning::
https://www.phoca.cz//images/projects/phoca-guestb... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz/images/article/phoca-cart-shi... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-cart-r... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-sef-r.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-font-r... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-photo-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-pdf-r.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-maps-r... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-instal... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-galler... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-favico... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-downlo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-comman... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-docume... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-panora... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-email-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz/images/phoca-seal.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz/images/ecommerce/phoca-cart-w... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz/images/blog/phoca-ai.jpg#joom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.phoca.cz//images/projects/phoca-restau... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
44 images 839 KB
0 oversized -0 KB
24 legacy format
20 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

B
JS Execution Cost
523ms total JS execution
REVIEW
523ms total JS execution
Info::
https://www.phoca.cz/: 171ms CPU time
Info::
Unattributable: 115ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-K1Z2...: 69ms CPU time
Info::
https://pagead2.googlesyndication.com/pagead/manag...: 59ms CPU time
Info::
https://fundingchoicesmessages.google.com/f/AGSKWx...: 58ms CPU time
Warning::
Third-party scripts: 523ms (100% of total)

Main Thread Breakdown

Script Evaluation 34% Style & Layout 23% Other 22% Script Parsing & Compilation 10% Rendering 5% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.phoca.cz/171ms1ms0ms3rd
Unattributable115ms4ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-K1Z2G5152Y69ms53ms13ms3rd
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604200101/show_ads_impl_fy2021.js?bust=3109801959ms29ms9ms3rd
https://fundingchoicesmessages.google.com/f/AGSKWxWnDKg85Lq4gDZvoxB0oNiLCUXAqIlMe1eGWjX3-BVh9uF9DPFgZPC_WSlm9zqgEHShweGb6io_8XXkFeJ6Tzz6VmdkjxWRz_SsSs8ZjMTGaz__VAdFOQC4LBuws6puOKCrk4kiHg==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODIwMTMzLDE1NDAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly93d3cucGhvY2EuY3ovIixudWxsLFtbOCwiRHNLR04tcXFmclEiXSxbOSwiZW4tVVMiXSxbMTgsIltbW251bGwsODY0XV1dIl0sWzM1LCIxNzc2ODIwMTMzIl0sWzE5LCIxIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyOSwiZmFsc2UiXV1d58ms29ms9ms3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-854872032687150552ms28ms20ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
8 fonts (501 KB)
PASS
8 fonts (501 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

8

501 KB total

Render-blocking

0

of 8

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 854 ms LCP 3.4 shttps://www.phoca.cz/media/templates/site/phoca_phoca/fonts/inter-v13-latin_latin-ext-regular.woff2inter-v13-latin_latin-e... https://www.phoca.cz/media/templates/site/phoca_phoca/fonts/inter-v13-latin_latin-ext-regular.woff2 — 43.5 KiB — 134 ms — font-display: swaphttps://www.phoca.cz/media/templates/site/phoca_phoca/fonts/inter-v13-latin_latin-ext-700.woff2inter-v13-latin_latin-e... https://www.phoca.cz/media/templates/site/phoca_phoca/fonts/inter-v13-latin_latin-ext-700.woff2 — 47.5 KiB — 135 ms — font-display: swaphttps://www.phoca.cz/media/templates/site/phoca_phoca/fonts/inter-v13-latin_latin-ext-900.woff2inter-v13-latin_latin-e... https://www.phoca.cz/media/templates/site/phoca_phoca/fonts/inter-v13-latin_latin-ext-900.woff2 — 45.9 KiB — 139 ms — font-display: swaphttps://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-brands-400.woff2?v=cbcf42fa-brands-400.woff2 https://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-brands-400.woff2?v=cbcf42 — 116.0 KiB — 47 ms — font-display: swaphttps://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591fa-solid-900.woff2 https://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591 — 154.6 KiB — 50 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2KFOMCnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2 — 14.8 KiB — 60 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.1 KiB — 60 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 27 ms — font-display: swap
inter-v13-latin_latin-e... woff2 swap
Size 44 KB
Load time 134 ms
Start 541 ms
Risk FOUT — text flashes from fallback to web font
inter-v13-latin_latin-e... woff2 swap
Size 47 KB
Load time 135 ms
Start 542 ms
Risk FOUT — text flashes from fallback to web font
inter-v13-latin_latin-e... woff2 swap
Size 46 KB
Load time 139 ms
Start 542 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 116 KB
Load time 47 ms
Start 873 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-solid-900.woff2 woff2 swap
Size 155 KB
Load time 50 ms
Start 873 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
KFOMCnqEu92Fr1ME7kSn66a... woff2 swap
Size 15 KB
Load time 60 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 60 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 27 ms
Start 1.3 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 ~135 KB and ~270 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
Network Waterfall
88 requests over 2223ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 854 ms LCP 3.4 shttps://phoca.cz// https://phoca.cz/ — 301 — 168 B — 126 ms — h2https://www.phoca.cz/www.phoca.cz/ https://www.phoca.cz/ — 200 — 66.0 KiB — 201 ms — h2https://www.phoca.cz/media/com_phocadocumentation/css/main.css?6c71c8www.phoca.cz/media/com_phocadocumen... https://www.phoca.cz/media/com_phocadocumentation/css/main.css?6c71c8 — 200 — 2.8 KiB — 76 ms — h2https://www.phoca.cz/media/templates/site/phoca_phoca/css/fonts/inter.css?6c71c8www.phoca.cz/media/templates/site/p... https://www.phoca.cz/media/templates/site/phoca_phoca/css/fonts/inter.css?6c71c8 — 200 — 2.1 KiB — 76 ms — h2https://www.phoca.cz/media/templates/site/phoca_phoca/css/template.min.css?6c71c8www.phoca.cz/media/templates/site/p... https://www.phoca.cz/media/templates/site/phoca_phoca/css/template.min.css?6c71c8 — 200 — 39.4 KiB — 120 ms — h2https://www.phoca.cz/media/mod_phocaparticles/css/style.css?6c71c8www.phoca.cz/media/mod_phocaparticl... 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h3https://clients1.google.com/generate_204clients1.google.com/generate_204 https://clients1.google.com/generate_204 — 204 — 117 B — 69 ms — h2https://fundingchoicesmessages.google.com/i/ca-pub-8548720326871505?href=https%3A%2F%2Fwww.phoca.cz&ers=2fundingchoicesmessages.google.com/i... https://fundingchoicesmessages.google.com/i/ca-pub-8548720326871505?href=https%3A%2F%2Fwww.phoca.cz&ers=2 — 200 — 70.1 KiB — 130 ms — h2https://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-brands-400.woff2?v=cbcf42www.phoca.cz/media/vendor/fontaweso... https://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-brands-400.woff2?v=cbcf42 — 200 — 116.0 KiB — 47 ms — h2https://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591www.phoca.cz/media/vendor/fontaweso... https://www.phoca.cz/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591 — 200 — 154.6 KiB — 50 ms — h2https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ==fundingchoicesmessages.google.com/e... https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ== — 204 — 28 B — 77 ms — h3https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ==fundingchoicesmessages.google.com/e... https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ== — 204 — 28 B — 71 ms — h3https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ==fundingchoicesmessages.google.com/e... https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ== — 204 — 28 B — 65 ms — h3https://fundingchoicesmessages.google.com/f/AGSKWxWnDKg85Lq4gDZvoxB0oNiLCUXAqIlMe1eGWjX3-BVh9uF9DPFgZPC_WSlm9zqgEHShweGb6io_8XXkFeJ6Tzz6VmdkjxWRz_SsSs8ZjMTGaz__VAdFOQC4LBuws6puOKCrk4kiHg==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODIwMTMzLDE1NDAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly93d3cucGhvY2EuY3ovIixudWxsLFtbOCwiRHNLR04tcXFmclEiXSxbOSwiZW4tVVMiXSxbMTgsIltbW251bGwsODY0XV1dIl0sWzM1LCIxNzc2ODIwMTMzIl0sWzE5LCIxIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyOSwiZmFsc2UiXV1dfundingchoicesmessages.google.com/f... https://fundingchoicesmessages.google.com/f/AGSKWxWnDKg85Lq4gDZvoxB0oNiLCUXAqIlMe1eGWjX3-BVh9uF9DPFgZPC_WSlm9zqgEHShweGb6io_8XXkFeJ6Tzz6VmdkjxWRz_SsSs8ZjMTGaz__VAdFOQC4LBuws6puOKCrk4kiHg==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODIwMTMzLDE1NDAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly93d3cucGhvY2EuY3ovIixudWxsLFtbOCwiRHNLR04tcXFmclEiXSxbOSwiZW4tVVMiXSxbMTgsIltbW251bGwsODY0XV1dIl0sWzM1LCIxNzc2ODIwMTMzIl0sWzE5LCIxIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyOSwiZmFsc2UiXV1d — 200 — 68.0 KiB — 98 ms — h2https://fonts.googleapis.com/css?family=Archivo:400,500|Arimo:400,500|Bitter:400,500|EB+Garamond:400,500|Lato|Libre+Baskervill|Libre+Franklin:400,500|Lora:400,500|Google+Sans:regular,medium:400,500|Material+Icons|Google+Symbols|Merriweather|Montserrat:400,500|Mukta:400,500|Muli:400,500|Nunito:400,500|Open+Sans:400,500,600|Open+Sans+Condensed:400,600|Oswald:500|Playfair+Display:400,500|Poppins:400,500|Raleway:400,500|Roboto:400,500|Roboto+Condensed:400,500|Roboto+Slab:400,500|Slabo+27px|Source+Sans+Pro|Ubuntu:400,500|Volkhov&display=swapfonts.googleapis.com/css?family=Arc... https://fonts.googleapis.com/css?family=Archivo:400,500|Arimo:400,500|Bitter:400,500|EB+Garamond:400,500|Lato|Libre+Baskervill|Libre+Franklin:400,500|Lora:400,500|Google+Sans:regular,medium:400,500|Material+Icons|Google+Symbols|Merriweather|Montserrat:400,500|Mukta:400,500|Muli:400,500|Nunito:400,500|Open+Sans:400,500,600|Open+Sans+Condensed:400,600|Oswald:500|Playfair+Display:400,500|Poppins:400,500|Raleway:400,500|Roboto:400,500|Roboto+Condensed:400,500|Roboto+Slab:400,500|Slabo+27px|Source+Sans+Pro|Ubuntu:400,500|Volkhov&display=swap — 200 — 6.6 KiB — 88 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2fonts.gstatic.com/s/roboto/v48/KFOM... https://fonts.gstatic.com/s/roboto/v48/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2 — 200 — 14.8 KiB — 60 ms — 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h3https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ==fundingchoicesmessages.google.com/e... https://fundingchoicesmessages.google.com/el/AGSKWxWA_YrfOw3KjppnMhrHzTIAjbbGtCGOv9Nl93cQryDUKHs4VG-YBSDIJwN2sghy_O1puNKPM0jM0s_chYbrbbP7Tr21KiKD3tUYvSbz4nrmgJqzkr0-lJ2bfEPlS4_EsdyNl_n6cQ== — 204 — 28 B — 29 ms — h3https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2fonts.gstatic.com/s/opensans/v40/me... https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 200 — 42.1 KiB — 60 ms — h3https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=afs&tv=1234567890&st=env&sjk=FQtaU92US5epVAQaGgRtCQ==&sde=1ep1.adtrafficquality.google/getconf... https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=afs&tv=1234567890&st=env&sjk=FQtaU92US5epVAQaGgRtCQ==&sde=1 — 200 — 7.9 KiB — 55 ms — h3https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v51/KFO7... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 36.7 KiB — 27 ms — h3https://www.phoca.cz/images/favicon/favicon.svgwww.phoca.cz/images/favicon/favicon... https://www.phoca.cz/images/favicon/favicon.svg — 200 — 745 B — 44 ms — h2https://ep2.adtrafficquality.google/sodar/sodar2.jsep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2.js — 200 — 7.9 KiB — 72 ms — h2https://www.phoca.cz/media/templates/site/phoca_phoca/images/favicon.icowww.phoca.cz/media/templates/site/p... https://www.phoca.cz/media/templates/site/phoca_phoca/images/favicon.ico — 200 — 1.2 KiB — 45 ms — h2https://ep2.adtrafficquality.google/sodar/sodar2/254/runner.htmlep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2/254/runner.html — 200 — 5.8 KiB — 70 ms — h2https://pagead2.googlesyndication.com/bg/dj12lhpBI2WR1GQ6n5lcmp69XlpHOiTAWO7c9b6NTo0.jspagead2.googlesyndication.com/bg/dj... https://pagead2.googlesyndication.com/bg/dj12lhpBI2WR1GQ6n5lcmp69XlpHOiTAWO7c9b6NTo0.js — 200 — 21.6 KiB — 78 ms — h3https://ep2.adtrafficquality.google/generate_204?3EZjfgep2.adtrafficquality.google/generat... https://ep2.adtrafficquality.google/generate_204?3EZjfg — 204 — 40 B — 24 ms — h2https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=afs_1234567890&jk=FQtaU92US5epVAQaGgRtCQ%3D%3D&bg=!QkGlQSPNAAY2C5OeFgs7AEcBe5WfOKWjONi4butRm24cx2rqDUoqWbqAU9S8DNqRiipv9mMTMqdEFSbbOqwuffwkdJ8zXn6R7LNdWoPLoH8bHbVIun4HNgIAAABFUgAAAAJoAQd-ABvvEymQo4thT3Q-5JCuDT7x2xxS_vqr3k2_k2YKAB7y7zOAkgQ_Zqs5IpLt1xFy3EGxE5hxy4y6jO3M6XCZAgl5vMhQI_ry33P39UWR3DG5YEzLJ5PkE4RTkfhaR1onqAufWKyYOeec3Wfgh_9Q-l7bWing39Qwa7kzgdTOvfkEb0uYqVlEwaZlvJpF6p5mpHaX0gHkRpbGcLfOus2XKbNNLhTw2C6lrvIbQw1nuZvFdZYp57WJE1lKGgUrizOlByFv5Kc6WKl_cG_qQZprmVuEH6AubDRD_3v0R0mn__Oc1MxmQM0qrE8ehtKlbbedZR3guOZZkdjAhQw9sTOueZp8AEk8jK5bI3JfLLm9SqKC7CK5LLsgiLOqiAv1gmtA2VbMyfljx57vCwQd95F8Hzvq2tMmr3-7yhNRl6unO4t3DhnlPoyG2Fyi_vWPcOQnoYRdQvoMeXzD88LZLAkpbA3tb3ltNKChgf_2j3nAVG6EiXJ5jhxUF1zaAbBYS2YpYhr-PU9vY_1n4l26lm--7z3iFhrw14nNJLSHAXFlin6D1lf0eFRyC1aYwX9cvGjxNd5rRM99qjZTkra97BwS0n6oXALKENU-yCYLNcWK9WxTCnRha9Y65796UiZ-2BcQKnLNL-faYwSRiFnDclEaIT1YhgvErRXnll3nIpV7dvlHGdHlHCOn2t9lEcTqezOHQjf-T3P114pfxIOCk15De9G0mHQ_4qcY0VvYTb5uTXzmIAGKUu8PBTgN9I6x4sLrnNLBmjICZMilMwep1.adtrafficquality.google/pagead/... https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=afs_1234567890&jk=FQtaU92US5epVAQaGgRtCQ%3D%3D&bg=!QkGlQSPNAAY2C5OeFgs7AEcBe5WfOKWjONi4butRm24cx2rqDUoqWbqAU9S8DNqRiipv9mMTMqdEFSbbOqwuffwkdJ8zXn6R7LNdWoPLoH8bHbVIun4HNgIAAABFUgAAAAJoAQd-ABvvEymQo4thT3Q-5JCuDT7x2xxS_vqr3k2_k2YKAB7y7zOAkgQ_Zqs5IpLt1xFy3EGxE5hxy4y6jO3M6XCZAgl5vMhQI_ry33P39UWR3DG5YEzLJ5PkE4RTkfhaR1onqAufWKyYOeec3Wfgh_9Q-l7bWing39Qwa7kzgdTOvfkEb0uYqVlEwaZlvJpF6p5mpHaX0gHkRpbGcLfOus2XKbNNLhTw2C6lrvIbQw1nuZvFdZYp57WJE1lKGgUrizOlByFv5Kc6WKl_cG_qQZprmVuEH6AubDRD_3v0R0mn__Oc1MxmQM0qrE8ehtKlbbedZR3guOZZkdjAhQw9sTOueZp8AEk8jK5bI3JfLLm9SqKC7CK5LLsgiLOqiAv1gmtA2VbMyfljx57vCwQd95F8Hzvq2tMmr3-7yhNRl6unO4t3DhnlPoyG2Fyi_vWPcOQnoYRdQvoMeXzD88LZLAkpbA3tb3ltNKChgf_2j3nAVG6EiXJ5jhxUF1zaAbBYS2YpYhr-PU9vY_1n4l26lm--7z3iFhrw14nNJLSHAXFlin6D1lf0eFRyC1aYwX9cvGjxNd5rRM99qjZTkra97BwS0n6oXALKENU-yCYLNcWK9WxTCnRha9Y65796UiZ-2BcQKnLNL-faYwSRiFnDclEaIT1YhgvErRXnll3nIpV7dvlHGdHlHCOn2t9lEcTqezOHQjf-T3P114pfxIOCk15De9G0mHQ_4qcY0VvYTb5uTXzmIAGKUu8PBTgN9I6x4sLrnNLBmjICZMilMw — 204 — 17 B — 46 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 523ms · 520KB · Kč65/mo
www.phoca.cz
Other
Optional
Execution 171ms
Transfer 66 KB
Monthly Cost Kč21/mo
Unattributable
Other
Optional
Execution 115ms
Transfer 0 KB
Monthly Cost Kč14/mo
Google Tag Manager
Tag Manager
Optional
Execution 69ms
Transfer 154 KB
Unused 42%
Monthly Cost Kč8/mo
pagead2.googlesyndication.com
Other
Optional
Execution 59ms
Transfer 177 KB
Unused 83%
Monthly Cost Kč7/mo
fundingchoicesmessages.google.com
Other
Optional
Execution 58ms
Transfer 68 KB
Monthly Cost Kč7/mo
pagead2.googlesyndication.com
Other
Optional
Execution 52ms
Transfer 55 KB
Unused 41%
Monthly Cost Kč6/mo

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

83% of pagead2.googlesyndication.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

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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