Skip to content
https://azlyrics.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
3
REVIEW
2
PASS
10
INFO
2

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

Mobile Desktop
64
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
54
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.

5.86 s

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

5.86 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.

0.007

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

5.86 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
10 PASS 2 REVIEW 3 FIX
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 (997.6 KiB of 997.7 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
9 scripts, 787 KB unused
FIX
9 scripts, 787 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 177 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://code.jquery.com/ui/1.12.1/jquery-ui.min.js: 59 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 787 KB
787 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB177 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB177 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js0 KB177 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js0 KB177 KB (49%)✓3rd
https://code.jquery.com/ui/1.12.1/jquery-ui.min.js66 KB59 KB (89%)✓3rd
https://code.jquery.com/jquery-1.12.4.min.js33 KB21 KB (63%)✓3rd
https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js11 KB—✓3rd
https://www.google.com/recaptcha/api.js?onload=az_recaptcha_loaded1 KB—✓3rd
https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=gTpTIWhbKpxADzTzkcabhXN40 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

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
JS Execution Cost
Action
1662ms total JS execution
REVIEW
1662ms total JS execution
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 1108ms CPU time
Info::
Unattributable: 233ms CPU time
Info::
https://b.azlyrics.com/?u=/: 152ms CPU time
Info::
https://code.jquery.com/jquery-1.12.4.min.js: 90ms CPU time
Info::
https://code.jquery.com/ui/1.12.1/jquery-ui.min.js: 80ms CPU time
Warning::
Third-party scripts: 1662ms (100% of total)

Main Thread Breakdown

Script Evaluation 67% Other 17% Script Parsing & Compilation 8% Style & Layout 4%
ScriptTotalScriptingParse/CompileParty
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js1108ms976ms104ms3rd
Unattributable233ms7ms0ms3rd
https://b.azlyrics.com/?u=/152ms5ms2ms3rd
https://code.jquery.com/jquery-1.12.4.min.js90ms63ms12ms3rd
https://code.jquery.com/ui/1.12.1/jquery-ui.min.js80ms51ms27ms3rd
B
Page Weight Inventory
27 resources · 998 KB · 787 KB savings available
REVIEW
27 resources · 998 KB · 787 KB savings available
Info::
Within 1MB page-weight target
Got: 998 KB
Info::
~787 KB of savings available
Warning::
26 third-party resources (100% of weight)
Info::
2 resources over 200KB
27 resources · 997.7 KiB · 26 third-party Within 1MB page-weight target
JavaScript 84% · 835.5 KiB
CSS 7% · 72.5 KiB
Font 5% · 52.0 KiB
Document 3% · 32.8 KiB
Image 0% · 4.9 KiB

~786.9 KiB of savings available

Remove unused JavaScript: 786.9 KiB
A
Page Weight Budget
998 KB transferred, 27 requests
PASS
998 KB transferred, 27 requests
Info::
Page weighs 4.2 MB (998 KB transferred)
Warning::
JavaScript is 836 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 836 KB
Info::
27 HTTP requests
Info::
Estimated 0.20 g CO2 per page load
998 KB / 2.4 MB budget
998 KB transferred
27 requests
0.20 g CO2 per page load
JavaScript 835.5 KiB 84%
CSS 72.5 KiB 7%
Fonts 52.0 KiB 5%
HTML 32.0 KiB 3%
Images 4.9 KiB 0%
Other 771 B 0%
0 2.4 MB 4.9 MB
Under budget

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

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
Warning::
https://b.azlyrics.com/az_logo_tr.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
4 images 5 KB
0 oversized -0 KB
2 legacy format
1 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

A+
Font Loading
3 fonts (52 KB)
PASS
3 fonts (52 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

52 KB total

Render-blocking

0

of 3

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 4.0 s 5.0 s 6.0 s FCP 5.9 s LCP 5.9 shttps://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff2glyphicons-halflings-re... https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff2 — 18.1 KiB — 16 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 40 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
glyphicons-halflings-re... woff2 swap
Size 18 KB
Load time 16 ms
Start 1.8 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 40 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 3.1 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)
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+
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: Leaseweb Global BV

Network Waterfall
27 requests over 3717ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 5.9 s LCP 5.9 shttps://azlyrics.com// https://azlyrics.com/ — 301 — 80 B — 422 ms — h2https://www.azlyrics.com/www.azlyrics.com/ https://www.azlyrics.com/ — 302 — 80 B — 148 ms — h2https://b.azlyrics.com/?u=/b.azlyrics.com/?u=/ https://b.azlyrics.com/?u=/ — 200 — 2.3 KiB — 158 ms — h2https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.cssmaxcdn.bootstrapcdn.com/bootstrap/3... https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css — 200 — 20.3 KiB — 35 ms — h3https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.min.csscode.jquery.com/ui/1.12.1/themes/ba... https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.min.css — 200 — 7.7 KiB — 19 ms — h2https://b.azlyrics.com/bsaz.cssb.azlyrics.com/bsaz.css https://b.azlyrics.com/bsaz.css — 200 — 2.4 KiB — 971 ms — h2https://code.jquery.com/jquery-1.12.4.min.jscode.jquery.com/jquery-1.12.4.min.j... https://code.jquery.com/jquery-1.12.4.min.js — 200 — 33.3 KiB — 26 ms — h2https://code.jquery.com/ui/1.12.1/jquery-ui.min.jscode.jquery.com/ui/1.12.1/jquery-ui... https://code.jquery.com/ui/1.12.1/jquery-ui.min.js — 200 — 66.4 KiB — 28 ms — h2https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.jsmaxcdn.bootstrapcdn.com/bootstrap/3... https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js — 200 — 10.6 KiB — 35 ms — h3https://b.azlyrics.com/az_logo_tr.pngb.azlyrics.com/az_logo_tr.png https://b.azlyrics.com/az_logo_tr.png — 200 — 2.5 KiB — 2.0 s — h2https://www.google.com/recaptcha/api.js?onload=az_recaptcha_loadedwww.google.com/recaptcha/api.js?onl... https://www.google.com/recaptcha/api.js?onload=az_recaptcha_loaded — 200 — 1.0 KiB — 56 ms — h3https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff2maxcdn.bootstrapcdn.com/bootstrap/3... https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff2 — 200 — 18.1 KiB — 16 ms — h3https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js — 200 — 362.4 KiB — 55 ms — h2https://www.google.com/recaptcha/api2/anchor?ar=1&k=6Le3KzMUAAAAAILzez0f7PnFiFboGPKt0qpkINXw&co=aHR0cHM6Ly9iLmF6bHlyaWNzLmNvbTo0NDM.&hl=en&v=gTpTIWhbKpxADzTzkcabhXN4&size=normal&anchor-ms=20000&execute-ms=30000&cb=yw7dneg2835cwww.google.com/recaptcha/api2/ancho... https://www.google.com/recaptcha/api2/anchor?ar=1&k=6Le3KzMUAAAAAILzez0f7PnFiFboGPKt0qpkINXw&co=aHR0cHM6Ly9iLmF6bHlyaWNzLmNvbTo0NDM.&hl=en&v=gTpTIWhbKpxADzTzkcabhXN4&size=normal&anchor-ms=20000&execute-ms=30000&cb=yw7dneg2835c — 200 — 27.5 KiB — 60 ms — h3https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/styles__ltr.csswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/styles__ltr.css — 200 — 42.1 KiB — 27 ms — h2https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js — 200 — 361.9 KiB — 40 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFQAAANICAYAAABZl8i8AAAAIGNIUk0AAHomAACAhAAA+gAAAIDoA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFQAAANICAYAAABZl8i8AAAAIGNIUk0AAHomAACAhAAA+gAAAIDoA… — 200 — 0 B — 1 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACYAAATsCAMAAADb3wBdAAAAIGNIUk0AAHomAACAhAAA+gAAAIDoA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACYAAATsCAMAAADb3wBdAAAAIGNIUk0AAHomAACAhAAA+gAAAIDoA… — 200 — 0 B — 0 ms — datahttps://www.gstatic.com/recaptcha/api2/logo_48.pngwww.gstatic.com/recaptcha/api2/logo... https://www.gstatic.com/recaptcha/api2/logo_48.png — 200 — 2.3 KiB — 6 ms — h2https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=gTpTIWhbKpxADzTzkcabhXN4www.google.com/recaptcha/api2/webwo... https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=gTpTIWhbKpxADzTzkcabhXN4 — 200 — 23 B — 248 ms — h3https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 33.9 KiB — 40 ms — h3https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js — 200 — 0 B — 24 ms — h2https://b.azlyrics.com/favicon.icob.azlyrics.com/favicon.ico https://b.azlyrics.com/favicon.ico — 404 — 611 B — 978 ms — h2https://www.google.com/recaptcha/api2/bframe?hl=en&v=gTpTIWhbKpxADzTzkcabhXN4&k=6Le3KzMUAAAAAILzez0f7PnFiFboGPKt0qpkINXw&bft=0dAFcWeA4uqcY4m5RzWhr1l8DNhfaTaBTH4YQdC1033JzQmxzijSOJppDDu0A_tGVk0ED83m-g8l6qDtISywCXAvGgqftGbjqBWQwww.google.com/recaptcha/api2/bfram... https://www.google.com/recaptcha/api2/bframe?hl=en&v=gTpTIWhbKpxADzTzkcabhXN4&k=6Le3KzMUAAAAAILzez0f7PnFiFboGPKt0qpkINXw&bft=0dAFcWeA4uqcY4m5RzWhr1l8DNhfaTaBTH4YQdC1033JzQmxzijSOJppDDu0A_tGVk0ED83m-g8l6qDtISywCXAvGgqftGbjqBWQ — 200 — 2.2 KiB — 28 ms — h3https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/styles__ltr.csswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/styles__ltr.css — 200 — 0 B — 0 ms — h2https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js — 200 — 0 B — 0 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 0 B — 0 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 1662ms · 102KB · €18/mo
www.gstatic.com
Other
Costly
Execution 1108ms
Transfer 0 KB
Unused 49%
Monthly Cost €12/mo
Unattributable
Other
Costly
Execution 233ms
Transfer 0 KB
Monthly Cost €3/mo
b.azlyrics.com
Other
Optional
Execution 152ms
Transfer 2 KB
Monthly Cost €2/mo
code.jquery.com
Other
Optional
Execution 90ms
Transfer 33 KB
Unused 63%
Monthly Cost €1/mo
code.jquery.com
Other
Optional
Execution 80ms
Transfer 66 KB
Unused 89%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.gstatic.com adds 1108ms and costs ~€12/month
  • Unattributable adds 233ms and costs ~€3/month

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

www.gstatic.com takes 1108ms 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

Unattributable takes 233ms 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

63% of code.jquery.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

89% of code.jquery.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.

Send Feedback