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https://colorlib.com

Performance

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

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

Mobile Desktop
100
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.

456 ms

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

759 ms

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

2 ms

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

0.010

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

521 ms

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

1.35 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
11 PASS 1 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.

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
989 KB transferred, 29 requests
PASS
989 KB transferred, 29 requests
Info::
Page weighs 2.0 MB (989 KB transferred)
Info::
29 HTTP requests
Info::
Estimated 0.20 g CO2 per page load
989 KB / 2.4 MB budget
989 KB transferred
29 requests
0.20 g CO2 per page load
JavaScript 376.4 KiB 38%
Images 375.5 KiB 38%
Fonts 175.4 KiB 18%
CSS 45.7 KiB 5%
HTML 8.6 KiB 1%
Other 4.0 KiB 0%
Other 2.5 KiB 0%
Other 814 B 0%
Other 497 B 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
40% third-party, 0 ms blocking
PASS
40% third-party, 0 ms blocking
Info::
Third-party code accounts for 40% of page weight (392.8 KiB of 989.4 KiB)
Info::
Third-party blocking time is low (0 ms)
60%
40%
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+
Image Optimization
8 images, 0 KB saveable
PASS
8 images, 0 KB saveable
Info::
All images are well-optimized
8 images 375 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
353ms total JS execution
PASS
353ms total JS execution
Info::
https://colorlib.com/: 182ms CPU time
Info::
https://colorlib.com/s9cc/: 111ms CPU time
Info::
Unattributable: 60ms CPU time
Info::
Third-party scripts: 60ms (17% of total)

Main Thread Breakdown

Style & Layout 35% Script Evaluation 33% Other 16% Script Parsing & Compilation 10% Parse HTML & CSS 3% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://colorlib.com/182ms4ms2ms1st
https://colorlib.com/s9cc/111ms88ms19ms1st
Unattributable60ms3ms0ms3rd
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 FCP 456 ms LCP 759 mshttps://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 — 31 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 — 13 ms — font-display: swap
bootstrap-icons.woff2 woff2 swap
Size 128 KB
Load time 31 ms
Start 283 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 13 ms
Start 288 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Page Weight Inventory
29 resources · 989 KB · 186 KB savings available
PASS
29 resources · 989 KB · 186 KB savings available
Info::
Within 1MB page-weight target
Got: 989 KB
Info::
~186 KB of savings available
Info::
15 third-party resources (40% of weight)
29 resources · 989.4 KiB · 15 third-party Within 1MB page-weight target
Image 38% · 377.4 KiB
JavaScript 38% · 376.4 KiB
Font 18% · 175.4 KiB
CSS 5% · 45.7 KiB
Document 1% · 8.6 KiB
Other 1% · 5.8 KiB

~186.3 KiB of savings available

Remove unused JavaScript: 186.3 KiB
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
29 requests over 523ms
INFO
0 ms 200 ms 400 ms 600 ms FCP 456 ms LCP 759 mshttps://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 — 580 B — 10 ms — h3https://colorlib.com/s9cc//s9cc/ https://colorlib.com/s9cc/ — 200 — 178.4 KiB — 40 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 — 53 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 — 37 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 — 42 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 — 16 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 — 41 ms — h2https://log.cookieyes.com/api/v1/loglog.cookieyes.com/api/v1/log https://log.cookieyes.com/api/v1/log — 200 — 260 B — 44 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 38 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 — 20 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 — 1 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 — 43 ms — h3https://colorlib.com/img/illdy.webp/img/illdy.webp https://colorlib.com/img/illdy.webp — 200 — 55.2 KiB — 49 ms — h3https://colorlib.com/img/activello.webp/img/activello.webp https://colorlib.com/img/activello.webp — 200 — 63.8 KiB — 54 ms — h3https://colorlib.com/img/sparkling.webp/img/sparkling.webp https://colorlib.com/img/sparkling.webp — 200 — 61.4 KiB — 48 ms — h3https://colorlib.com/img/dazzling.webp/img/dazzling.webp https://colorlib.com/img/dazzling.webp — 200 — 66.0 KiB — 46 ms — h3https://colorlib.com/img/travelify.webp/img/travelify.webp https://colorlib.com/img/travelify.webp — 200 — 70.6 KiB — 47 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 — 31 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 — 13 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 — 6 ms — h2https://colorlib.com/s9cc/ga/g/c?v=2&tid=G-SEKJ4E9T4H&gtm=45g92e64h1v884953958za204zd884953958&_p=1776801002095&gcd=13l3l3l3l1l1&npa=0&dma=0&gdid=dYzg1YT.dNzQzZD&_uip=%3A%3A&are=1&cid=1879896967.1776801002&fp=1&frm=0&pscdl=noapi&rcb=15&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&ur=MY-11&_gsid=iBZOOWlqSzp6JRcnM7FRDIHpz3_4jL9R8g&_s=1&tag_exp=0~115938465~115938469~117266400~117512543&sid=1776801002&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=431/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=1776801002095&gcd=13l3l3l3l1l1&npa=0&dma=0&gdid=dYzg1YT.dNzQzZD&_uip=%3A%3A&are=1&cid=1879896967.1776801002&fp=1&frm=0&pscdl=noapi&rcb=15&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&ur=MY-11&_gsid=iBZOOWlqSzp6JRcnM7FRDIHpz3_4jL9R8g&_s=1&tag_exp=0~115938465~115938469~117266400~117512543&sid=1776801002&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=431 — 204 — 587 B — 40 ms — h3https://www.google-analytics.com/g/s/collect?v=2&_gsid=iBZOOWlqSzp6JRcnM7FRDIHpz3_4jL9R8g&gtm=45g92e64h1v884953958za204zd884953958www.google-analytics.com/g/s/collec... https://www.google-analytics.com/g/s/collect?v=2&_gsid=iBZOOWlqSzp6JRcnM7FRDIHpz3_4jL9R8g&gtm=45g92e64h1v884953958za204zd884953958 — 204 — 554 B — 15 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 — 17 ms — h2https://directory.cookieyes.com/api/v1/ipdirectory.cookieyes.com/api/v1/ip https://directory.cookieyes.com/api/v1/ip — 200 — 409 B — 38 ms — h3https://colorlib.com/cdn-cgi/rum?/cdn-cgi/rum? https://colorlib.com/cdn-cgi/rum? — 204 — 497 B — 6 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 — 14 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 — 10 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
17% of JavaScript execution is third-party
First-party Third-party 60ms · 0KB · €1/mo
Unattributable
Other
Optional
Execution 60ms
Transfer 0 KB
Monthly Cost €1/mo

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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