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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
2
REVIEW
2
PASS
11
INFO
2

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

Mobile Desktop
80
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.

3.32 s

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

3.70 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.

0.077

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

3.84 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.

3.70 s

Page Load Progression

471 ms
941 ms
1.4 s
1.9 s
2.4 s
2.8 s
3.3 s
3.8 s
Checks
17
11 PASS 2 REVIEW 2 FIX
F
JS Execution Cost
Action
4396ms total JS execution
FIX
4396ms total JS execution
Warning::
https://cutt.ly/: 3797ms CPU time
Warning::
Unattributable: 453ms CPU time
Info::
https://cutt.ly/scripts/jquery.js?v=03112023: 146ms CPU time
Info::
Third-party scripts: 453ms (10% of total)

Main Thread Breakdown

Other 40% Style & Layout 40% Rendering 12% Script Evaluation 5%
ScriptTotalScriptingParse/CompileParty
https://cutt.ly/3797ms65ms12ms1st
Unattributable453ms7ms0ms3rd
https://cutt.ly/scripts/jquery.js?v=03112023146ms117ms11ms1st
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store, no-cache, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-store, no-cache, must-revalidate

DirectiveValueMeaning
no-store—Never cache this response
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
B
Third-Party Impact
46% third-party, 0 ms blocking
REVIEW
46% third-party, 0 ms blocking
Info::
Third-party code accounts for 46% of page weight (162.6 KiB of 353.5 KiB)
Info::
Third-party blocking time is low (0 ms)
54%
46%
First-party Third-party
B
Image Optimization
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Info::
All images are well-optimized
8 images 6 KB
0 oversized -0 KB
6 legacy format
0 missing dimensions CLS risk
A+
Page Weight Budget
353 KB transferred, 27 requests
PASS
353 KB transferred, 27 requests
Info::
Page weighs 907 KB (353 KB transferred)
Info::
27 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
353 KB / 2.4 MB budget
353 KB transferred
27 requests
0.07 g CO2 per page load
Fonts 162.6 KiB 46%
JavaScript 62.2 KiB 18%
CSS 54.8 KiB 16%
HTML 52.1 KiB 15%
Other 14.5 KiB 4%
Images 6.3 KiB 2%
Other 638 B 0%
Other 411 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
5 fonts (163 KB)
PASS
5 fonts (163 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

163 KB total

Render-blocking

0

of 5

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 3.3 s LCP 3.7 shttps://fonts.gstatic.com/s/ubuntu/v20/4iCs6KVjbNBYlgoKfw72.woff24iCs6KVjbNBYlgoKfw72.woff2 https://fonts.gstatic.com/s/ubuntu/v20/4iCs6KVjbNBYlgoKfw72.woff2 — 34.1 KiB — 13 ms — font-display: swaphttps://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoC1CzjsGyN.woff24iCv6KVjbNBYlgoC1CzjsGy... https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoC1CzjsGyN.woff2 — 37.9 KiB — 16 ms — font-display: swaphttps://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCxCvjsGyN.woff24iCv6KVjbNBYlgoCxCvjsGy... https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCxCvjsGyN.woff2 — 29.1 KiB — 14 ms — font-display: swaphttps://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCjC3jsGyN.woff24iCv6KVjbNBYlgoCjC3jsGy... https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCjC3jsGyN.woff2 — 29.8 KiB — 15 ms — font-display: swaphttps://fonts.gstatic.com/s/ubuntu/v20/4iCp6KVjbNBYlgoKejYHtFyPN4E.woff24iCp6KVjbNBYlgoKejYHtFy... https://fonts.gstatic.com/s/ubuntu/v20/4iCp6KVjbNBYlgoKejYHtFyPN4E.woff2 — 31.8 KiB — 6 ms — font-display: swap
4iCs6KVjbNBYlgoKfw72.woff2 woff2 swap
Size 34 KB
Load time 13 ms
Start 362 ms
Risk FOUT — text flashes from fallback to web font
4iCv6KVjbNBYlgoC1CzjsGy... woff2 swap
Size 38 KB
Load time 16 ms
Start 362 ms
Risk FOUT — text flashes from fallback to web font
4iCv6KVjbNBYlgoCxCvjsGy... woff2 swap
Size 29 KB
Load time 14 ms
Start 363 ms
Risk FOUT — text flashes from fallback to web font
4iCv6KVjbNBYlgoCjC3jsGy... woff2 swap
Size 30 KB
Load time 15 ms
Start 366 ms
Risk FOUT — text flashes from fallback to web font
4iCp6KVjbNBYlgoKejYHtFy... woff2 swap
Size 32 KB
Load time 6 ms
Start 567 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
JS Bundles
6 scripts, 0 KB unused
PASS
6 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cutt.ly/scripts/jquery.js?v=0311202329 KB—✓1st
https://cutt.ly/scripts/bootstrap.min.js?v=230220230121 KB—✓1st
https://cutt.ly/scripts/url.js?v=28122024012 KB—✓1st
https://cutt.ly/scripts/classie.js?v=22102024011 KB—✓1st
https://cutt.ly/scripts/main.js?v=27062025013 KB—✓1st
https://cutt.ly/scripts/cookieconsent.js?v=18112023207 KB—✓1st
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
7 hints, 0 missing preconnects
PASS
7 hints, 0 missing preconnects
Info::
Page uses 7 resource hint(s)

Current Resource Hints

preconnect
2
preload
3
dns-prefetch
2
prefetch
—

7 resource hints configured

A
Page Weight Inventory
27 resources · 353 KB · 0 KB savings available
PASS
27 resources · 353 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 353 KB
Warning::
7 third-party resources (46% of weight)
27 resources · 353.5 KiB · 7 third-party Within 1MB page-weight target
Font 46% · 162.6 KiB
JavaScript 18% · 62.2 KiB
CSS 16% · 54.8 KiB
Document 15% · 52.5 KiB
Image 6% · 20.8 KiB
Other 0% · 638 B
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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
27 requests over 884ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 3.3 s LCP 3.7 shttps://cutt.ly// https://cutt.ly/ — 200 — 52.1 KiB — 400 ms — h2https://cutt.ly/scripts/jquery.js?v=03112023/scripts/jquery.js?v=03112023 https://cutt.ly/scripts/jquery.js?v=03112023 — 200 — 29.2 KiB — 24 ms — h2https://cutt.ly/scripts/bootstrap.min.js?v=2302202301/scripts/bootstrap.min.js?v=2302202... https://cutt.ly/scripts/bootstrap.min.js?v=2302202301 — 200 — 20.9 KiB — 22 ms — h2https://cutt.ly/css/style_c.css?v=1204202601/css/style_c.css?v=1204202601 https://cutt.ly/css/style_c.css?v=1204202601 — 200 — 49.8 KiB — 24 ms — h2https://cutt.ly/site.webmanifest/site.webmanifest https://cutt.ly/site.webmanifest — 200 — 638 B — 212 ms — h3https://cutt.ly/scripts/url.js?v=2812202401/scripts/url.js?v=2812202401 https://cutt.ly/scripts/url.js?v=2812202401 — 200 — 1.8 KiB — 17 ms — h3https://cutt.ly/css/print.css?v=0412202201/css/print.css?v=0412202201 https://cutt.ly/css/print.css?v=0412202201 — 200 — 614 B — 18 ms — h3https://cutt.ly/img/link_bg.svg/img/link_bg.svg https://cutt.ly/img/link_bg.svg — 200 — 795 B — 16 ms — h3https://cutt.ly/img/link_bg_2.svg/img/link_bg_2.svg https://cutt.ly/img/link_bg_2.svg — 200 — 899 B — 17 ms — h3data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter i…www.w3.org/2000/svg' width='140' he... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter i… — 200 — 0 B — 0 ms — datahttps://fonts.gstatic.com/s/ubuntu/v20/4iCs6KVjbNBYlgoKfw72.woff2fonts.gstatic.com/s/ubuntu/v20/4iCs... https://fonts.gstatic.com/s/ubuntu/v20/4iCs6KVjbNBYlgoKfw72.woff2 — 200 — 34.1 KiB — 13 ms — h3https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoC1CzjsGyN.woff2fonts.gstatic.com/s/ubuntu/v20/4iCv... https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoC1CzjsGyN.woff2 — 200 — 37.9 KiB — 16 ms — h3https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCxCvjsGyN.woff2fonts.gstatic.com/s/ubuntu/v20/4iCv... https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCxCvjsGyN.woff2 — 200 — 29.1 KiB — 14 ms — h3https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCjC3jsGyN.woff2fonts.gstatic.com/s/ubuntu/v20/4iCv... https://fonts.gstatic.com/s/ubuntu/v20/4iCv6KVjbNBYlgoCjC3jsGyN.woff2 — 200 — 29.8 KiB — 15 ms — h3https://cutt.ly/img/favicon-32x32.png/img/favicon-32x32.png https://cutt.ly/img/favicon-32x32.png — 200 — 2.0 KiB — 15 ms — h3data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxN…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxN… — 200 — 0 B — 0 ms — datahttps://cutt.ly/surv_bg/star_1_main_a.svg/surv_bg/star_1_main_a.svg https://cutt.ly/surv_bg/star_1_main_a.svg — 200 — 959 B — 17 ms — h3https://cutt.ly/img/c_tick_2_g_w.svg/img/c_tick_2_g_w.svg https://cutt.ly/img/c_tick_2_g_w.svg — 200 — 966 B — 14 ms — h3https://fonts.gstatic.com/s/ubuntu/v20/4iCp6KVjbNBYlgoKejYHtFyPN4E.woff2fonts.gstatic.com/s/ubuntu/v20/4iCp... https://fonts.gstatic.com/s/ubuntu/v20/4iCp6KVjbNBYlgoKejYHtFyPN4E.woff2 — 200 — 31.8 KiB — 6 ms — h3https://cutt.ly/img/wrs.svg/img/wrs.svg https://cutt.ly/img/wrs.svg — 200 — 766 B — 16 ms — h3https://cutt.ly/scripts/classie.js?v=2210202401/scripts/classie.js?v=2210202401 https://cutt.ly/scripts/classie.js?v=2210202401 — 200 — 778 B — 14 ms — h3https://cutt.ly/scripts/main.js?v=2706202501/scripts/main.js?v=2706202501 https://cutt.ly/scripts/main.js?v=2706202501 — 200 — 2.9 KiB — 15 ms — h3https://cutt.ly/css/cookieconsent.css?v=2210202407/css/cookieconsent.css?v=2210202407 https://cutt.ly/css/cookieconsent.css?v=2210202407 — 200 — 4.4 KiB — 19 ms — h3https://cutt.ly/scripts/cookieconsent.js?v=1811202320/scripts/cookieconsent.js?v=1811202... https://cutt.ly/scripts/cookieconsent.js?v=1811202320 — 200 — 6.5 KiB — 18 ms — h3https://cutt.ly/scripts/getCookies.php/scripts/getCookies.php https://cutt.ly/scripts/getCookies.php — 200 — 411 B — 203 ms — h3https://cutt.ly/img/favicon-32x32.png/img/favicon-32x32.png https://cutt.ly/img/favicon-32x32.png — 200 — 0 B — 3 ms — h3https://cutt.ly/img/android-chrome-192x192.png/img/android-chrome-192x192.png https://cutt.ly/img/android-chrome-192x192.png — 200 — 14.5 KiB — 17 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
10% of JavaScript execution is third-party
First-party Third-party 453ms · 0KB · zł34/mo
Unattributable
Other
Costly
Execution 453ms
Transfer 0 KB
Monthly Cost zł34/mo

These scripts may cost more than they're worth

  • Unattributable adds 453ms and costs ~zł34/month

Unattributable takes 453ms 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

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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