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https://colorlib.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
1
REVIEW
3
PASS
11
INFO
2

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

Mobile Desktop
93
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.

1.79 s

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

2.63 s

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

192 ms

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

0.002

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

1.79 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.

5.86 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
17
11 PASS 3 REVIEW 1 FIX
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.
Info::
Last-Modified header present

No Cache-Control header

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

B
Third-Party Impact
54% third-party, 0 ms blocking
REVIEW
54% third-party, 0 ms blocking
Warning::
Third-party code accounts for 54% of page weight (392.8 KiB of 727.5 KiB)
Info::
Third-party blocking time is low (0 ms)
46%
54%
First-party Third-party
C
JS Execution Cost
Action
1464ms total JS execution
REVIEW
1464ms total JS execution
Warning::
https://colorlib.com/: 626ms CPU time
Warning::
https://colorlib.com/s9cc/: 397ms CPU time
Info::
Unattributable: 205ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-SEKJ...: 103ms CPU time
Info::
https://cdn-cookieyes.com/client_data/0247949250d4...: 78ms CPU time
Info::
Third-party scripts: 441ms (30% of total)

Main Thread Breakdown

Script Evaluation 34% Style & Layout 31% Other 16% Script Parsing & Compilation 11% Parse HTML & CSS 5% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://colorlib.com/626ms15ms4ms1st
https://colorlib.com/s9cc/397ms316ms77ms1st
Unattributable205ms10ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4H103ms32ms71ms3rd
https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/script.js78ms71ms4ms3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451656ms31ms4ms3rd
C
JS Bundles
Action
6 scripts, 186 KB unused
REVIEW
6 scripts, 186 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-SEKJ...: 115 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://colorlib.com/s9cc/: 72 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 186 KB
186 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4H170 KB115 KB (67%)✓3rd
https://colorlib.com/s9cc/178 KB72 KB (40%)✓1st
https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/script.js9 KB—✓3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 KB—✓3rd
https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/banner.js8 KB—✓3rd
https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4H&gtg_health=10 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

A
Page Weight Budget
728 KB transferred, 25 requests
PASS
728 KB transferred, 25 requests
Info::
Page weighs 1.7 MB (728 KB transferred)
Info::
25 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
728 KB / 2.4 MB budget
728 KB transferred
25 requests
0.15 g CO2 per page load
JavaScript 376.4 KiB 52%
Fonts 175.5 KiB 24%
Images 113.6 KiB 16%
CSS 45.7 KiB 6%
HTML 8.6 KiB 1%
Other 4.0 KiB 1%
Other 2.5 KiB 0%
Other 814 B 0%
Other 496 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+
Image Optimization
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 114 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
2 fonts (175 KB)
PASS
2 fonts (175 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

175 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.8 s LCP 2.6 shttps://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/fonts/bootstrap-icons.woff2?dd67030699838ea613ee6dbda90effa6bootstrap-icons.woff2 https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/fonts/bootstrap-icons.woff2?dd67030699838ea613ee6dbda90effa6 — 128.1 KiB — 23 ms — font-display: swaphttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 8 ms — font-display: swap
bootstrap-icons.woff2 woff2 swap
Size 128 KB
Load time 23 ms
Start 247 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
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 8 ms
Start 247 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)

Fixing the unchecked items could save ~64 KB and ~128 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
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
4
preload
—
dns-prefetch
—
prefetch
—

4 resource hints configured

A
Page Weight Inventory
25 resources · 728 KB · 186 KB savings available
PASS
25 resources · 728 KB · 186 KB savings available
Info::
Within 1MB page-weight target
Got: 728 KB
Info::
~186 KB of savings available
Warning::
15 third-party resources (54% of weight)
25 resources · 727.5 KiB · 15 third-party Within 1MB page-weight target
JavaScript 52% · 376.4 KiB
Font 24% · 175.5 KiB
Image 16% · 115.6 KiB
CSS 6% · 45.7 KiB
Document 1% · 8.6 KiB
Other 1% · 5.8 KiB

~186.4 KiB of savings available

Remove unused JavaScript: 186.4 KiB
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
25 requests over 617ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.8 s LCP 2.6 shttps://colorlib.com// https://colorlib.com/ — 200 — 8.6 KiB — 37 ms — h3https://colorlib.com/cdn-cgi/speculation/cdn-cgi/speculation https://colorlib.com/cdn-cgi/speculation — 200 — 581 B — 5 ms — h3https://colorlib.com/s9cc//s9cc/ https://colorlib.com/s9cc/ — 200 — 178.4 KiB — 52 ms — h3https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/script.jscdn-cookieyes.com/client_data/02479... https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/script.js — 200 — 9.1 KiB — 38 ms — h2https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swapfonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap — 200 — 1.2 KiB — 21 ms — h2https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.csscdn.jsdelivr.net/npm/bootstrap-icon... https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css — 200 — 13.8 KiB — 34 ms — h2https://colorlib.com/wp-content/themes/sparkling-child/assets/css/style.css/wp-content/themes/sparkling-child/... https://colorlib.com/wp-content/themes/sparkling-child/assets/css/style.css — 200 — 30.6 KiB — 23 ms — h3https://colorlib.com/lib/img/colorlib-logo.png/lib/img/colorlib-logo.png https://colorlib.com/lib/img/colorlib-logo.png — 200 — 3.5 KiB — 21 ms — h3https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4Hwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4H — 200 — 170.2 KiB — 42 ms — h2https://log.cookieyes.com/api/v1/loglog.cookieyes.com/api/v1/log https://log.cookieyes.com/api/v1/log — 200 — 260 B — 49 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 33 ms — h2https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/banner.jscdn-cookieyes.com/client_data/02479... https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/banner.js — 200 — 7.8 KiB — 19 ms — h2data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/…www.w3.org/2000/… data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/… — 200 — 0 B — 0 ms — datahttps://colorlib.com/img/flexible-wordpress-theme.webp/img/flexible-wordpress-theme.webp https://colorlib.com/img/flexible-wordpress-theme.webp — 200 — 55.0 KiB — 19 ms — h3https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/fonts/bootstrap-icons.woff2?dd67030699838ea613ee6dbda90effa6cdn.jsdelivr.net/npm/bootstrap-icon... https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/fonts/bootstrap-icons.woff2?dd67030699838ea613ee6dbda90effa6 — 200 — 128.1 KiB — 23 ms — h3https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2fonts.gstatic.com/s/inter/v20/UcC73... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 200 — 47.3 KiB — 8 ms — h3https://colorlib.com/img/illdy.webp/img/illdy.webp https://colorlib.com/img/illdy.webp — 200 — 55.1 KiB — 17 ms — h3https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4H&gtg_health=1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-SEKJ4E9T4H&gtg_health=1 — 200 — 207 B — 5 ms — h2https://colorlib.com/s9cc/ga/g/c?v=2&tid=G-SEKJ4E9T4H&gtm=45g92e64h1v884953958za204zd884953958&_p=1776800985334&gcd=13l3l3l3l1l1&npa=0&dma=0&gdid=dYzg1YT.dNzQzZD&_uip=%3A%3A&are=1&cid=1753295080.1776800986&fp=1&frm=0&pscdl=noapi&rcb=19&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&ur=MY-11&_gsid=Mqn4VX0LhjXYYieI6iG8iVCEw-duW7f_-w&_s=1&tag_exp=0~115616986~115938466~115938468~117266401~117384406&sid=1776800985&sct=1&seg=0&dl=https%3A%2F%2Fcolorlib.com%2F&dt=WordPress%20Themes%20%26%20Website%20Templates%20-%20Colorlib&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&gap.gtb=1&tfd=379/s9cc/ga/g/c?v=2&tid=G-SEKJ4E9T4H&g... https://colorlib.com/s9cc/ga/g/c?v=2&tid=G-SEKJ4E9T4H&gtm=45g92e64h1v884953958za204zd884953958&_p=1776800985334&gcd=13l3l3l3l1l1&npa=0&dma=0&gdid=dYzg1YT.dNzQzZD&_uip=%3A%3A&are=1&cid=1753295080.1776800986&fp=1&frm=0&pscdl=noapi&rcb=19&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&ur=MY-11&_gsid=Mqn4VX0LhjXYYieI6iG8iVCEw-duW7f_-w&_s=1&tag_exp=0~115616986~115938466~115938468~117266401~117384406&sid=1776800985&sct=1&seg=0&dl=https%3A%2F%2Fcolorlib.com%2F&dt=WordPress%20Themes%20%26%20Website%20Templates%20-%20Colorlib&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&gap.gtb=1&tfd=379 — 204 — 587 B — 42 ms — h3https://www.google-analytics.com/g/s/collect?v=2&_gsid=Mqn4VX0LhjXYYieI6iG8iVCEw-duW7f_-w&gtm=45g92e64h1v884953958za204zd884953958www.google-analytics.com/g/s/collec... https://www.google-analytics.com/g/s/collect?v=2&_gsid=Mqn4VX0LhjXYYieI6iG8iVCEw-duW7f_-w&gtm=45g92e64h1v884953958za204zd884953958 — 204 — 554 B — 11 ms — h2https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/OKeY50e9.jsoncdn-cookieyes.com/client_data/02479... https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/OKeY50e9.json — 200 — 351 B — 32 ms — h2https://colorlib.com/cdn-cgi/rum?/cdn-cgi/rum? https://colorlib.com/cdn-cgi/rum? — 204 — 496 B — 7 ms — h3https://colorlib.com/wp/wp-content/uploads/sites/2/2014/05/colorlib-favicon.png/wp/wp-content/uploads/sites/2/2014... https://colorlib.com/wp/wp-content/uploads/sites/2/2014/05/colorlib-favicon.png — 200 — 2.0 KiB — 189 ms — h3https://directory.cookieyes.com/api/v1/ipdirectory.cookieyes.com/api/v1/ip https://directory.cookieyes.com/api/v1/ip — 200 — 409 B — 22 ms — h3https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/audit-table/hNDSOouj.jsoncdn-cookieyes.com/client_data/02479... https://cdn-cookieyes.com/client_data/0247949250d42d6556b720aa/audit-table/hNDSOouj.json — 200 — 2.7 KiB — 14 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
30% of JavaScript execution is third-party
First-party Third-party 441ms · 190KB · €5/mo
Unattributable
Other
Costly
Execution 205ms
Transfer 0 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 103ms
Transfer 170 KB
Unused 67%
Monthly Cost €1/mo
cdn-cookieyes.com
Other
Optional
Execution 78ms
Transfer 9 KB
Monthly Cost €1/mo
static.cloudflareinsights.com
Other
Optional
Execution 56ms
Transfer 11 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 205ms and costs ~€2/month

Unattributable takes 205ms 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

67% of Google Tag Manager'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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