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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
3
REVIEW
3
PASS
9
INFO
2

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

Mobile Desktop
47
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
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.
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.

2.28 s

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

7.02 s

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

1.37 s

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

0.000

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

4.21 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.

7.13 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
9 PASS 3 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 (768.5 KiB of 768.7 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
3625ms total JS execution
FIX
3625ms total JS execution
Warning::
https://www.wolframalpha.com/_next/static/chunks/f...: 1007ms CPU time
Warning::
https://www.wolframalpha.com/: 763ms CPU time
Warning::
https://www.wolframalpha.com/_next/static/chunks/p...: 645ms CPU time
Warning::
https://www.wolframalpha.com/_next/static/chunks/p...: 522ms CPU time
Warning::
Unattributable: 354ms CPU time
Warning::
Third-party scripts: 3625ms (100% of total)

Main Thread Breakdown

Script Evaluation 55% Other 16% Style & Layout 13% Script Parsing & Compilation 11%
ScriptTotalScriptingParse/CompileParty
https://www.wolframalpha.com/_next/static/chunks/framework-7e404342b933869f.js1007ms851ms48ms3rd
https://www.wolframalpha.com/763ms9ms5ms3rd
https://www.wolframalpha.com/_next/static/chunks/pages/index-af52cfcd888931b0.js645ms638ms6ms3rd
https://www.wolframalpha.com/_next/static/chunks/pages/_app-5e36c1fbb0d9113d.js522ms386ms107ms3rd
Unattributable354ms10ms0ms3rd
https://www.wolframalpha.com/_next/static/chunks/main-9c7afc91105fe70f.js186ms139ms46ms3rd
https://www.wolframalpha.com/_next/static/chunks/4869-e9da3fb3526a80a2.js76ms2ms73ms3rd
https://www.wolframalpha.com/_next/static/chunks/9afd5809-45a13b3d11fec1dd.js72ms2ms70ms3rd
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 Bundles
Action
15 scripts, 261 KB unused
REVIEW
15 scripts, 261 KB unused
Warning::
https://www.wolframalpha.com/_next/static/chunks/p...: 77 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.wolframalpha.com/_next/static/chunks/4...: 70 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.wolframalpha.com/_next/static/chunks/9...: 50 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.wolframalpha.com/_next/static/chunks/2...: 43 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.wolframalpha.com/_next/static/chunks/f...: 20 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 261 KB
261 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.wolframalpha.com/_next/static/chunks/pages/_app-5e36c1fbb0d9113d.js195 KB77 KB (40%)✓3rd
https://www.wolframalpha.com/_next/static/chunks/4869-e9da3fb3526a80a2.js127 KB70 KB (57%)✓3rd
https://www.wolframalpha.com/_next/static/chunks/9afd5809-45a13b3d11fec1dd.js85 KB50 KB (60%)✓3rd
https://www.wolframalpha.com/_next/static/chunks/275-c6462c43c8fa56a7.js65 KB43 KB (66%)✓3rd
https://www.wolframalpha.com/_next/static/chunks/framework-7e404342b933869f.js59 KB20 KB (34%)✓3rd
https://www.wolframalpha.com/_next/static/chunks/main-9c7afc91105fe70f.js36 KB—✓3rd
https://www.wolframalpha.com/_next/static/chunks/webpack-e631c0b9bc4c85ae.js4 KB—✓3rd
https://www.wolframalpha.com/_next/static/chunks/8798.f5faec180d9de442.js5 KB—✓3rd
https://www.wolframalpha.com/_next/static/chunks/4705-1f37cf179cd9bab9.js9 KB—✓3rd
https://www.wolframalpha.com/_next/static/chunks/8020-c1252a00af52e09c.js4 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

B
Page Weight Inventory
28 resources · 769 KB · 261 KB savings available
REVIEW
28 resources · 769 KB · 261 KB savings available
Info::
Within 1MB page-weight target
Got: 769 KB
Info::
~261 KB of savings available
Warning::
27 third-party resources (100% of weight)
28 resources · 768.7 KiB · 27 third-party Within 1MB page-weight target
JavaScript 79% · 609.1 KiB
Font 15% · 112.9 KiB
Document 5% · 38.2 KiB
CSS 1% · 5.3 KiB
Image 0% · 2.6 KiB
Other 0% · 591 B

~260.6 KiB of savings available

Remove unused JavaScript: 260.6 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
769 KB transferred, 28 requests
PASS
769 KB transferred, 28 requests
Info::
Page weighs 2.4 MB (769 KB transferred)
Warning::
JavaScript is 609 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 609 KB
Info::
28 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
769 KB / 2.4 MB budget
769 KB transferred
28 requests
0.16 g CO2 per page load
JavaScript 609.1 KiB 79%
Fonts 112.9 KiB 15%
HTML 38.1 KiB 5%
CSS 5.3 KiB 1%
Other 2.0 KiB 0%
Images 794 B 0%
Other 591 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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 1 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
6 fonts (113 KB)
PASS
6 fonts (113 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

113 KB total

Render-blocking

0

of 6

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 7.0 s FCP 2.3 s LCP 7.0 shttps://www.wolframalpha.com/_next/static/media/roboto-latin-italic-400.fac7cf37.woff2roboto-latin-italic-400... https://www.wolframalpha.com/_next/static/media/roboto-latin-italic-400.fac7cf37.woff2 — 11.4 KiB — 405 ms — font-display: swaphttps://www.wolframalpha.com/_next/static/media/Lexia_W_Lt.19c4cb27.woffLexia_W_Lt.19c4cb27.woff https://www.wolframalpha.com/_next/static/media/Lexia_W_Lt.19c4cb27.woff — 31.6 KiB — 405 ms — font-display: swaphttps://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-regular.090a5408.woff2source-sans-pro-v9-lati... https://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-regular.090a5408.woff2 — 14.2 KiB — 406 ms — font-display: swaphttps://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-600.96f36c1a.woff2source-sans-pro-v9-lati... https://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-600.96f36c1a.woff2 — 13.9 KiB — 404 ms — font-display: swaphttps://www.wolframalpha.com/_next/static/media/roboto-latin-400.7e0ffa28.woff2roboto-latin-400.7e0ffa... https://www.wolframalpha.com/_next/static/media/roboto-latin-400.7e0ffa28.woff2 — 10.2 KiB — 403 ms — font-display: swaphttps://www.wolframalpha.com/_next/static/media/Lexia_W_LtIt.763dc789.woffLexia_W_LtIt.763dc789.woff https://www.wolframalpha.com/_next/static/media/Lexia_W_LtIt.763dc789.woff — 31.6 KiB — 156 ms — font-display: swap
roboto-latin-italic-400... woff2 swap
Size 11 KB
Load time 405 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
Lexia_W_Lt.19c4cb27.woff woff swap
Size 32 KB
Load time 405 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
source-sans-pro-v9-lati... woff2 swap
Size 14 KB
Load time 406 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
source-sans-pro-v9-lati... woff2 swap
Size 14 KB
Load time 404 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
roboto-latin-400.7e0ffa... woff2 swap
Size 10 KB
Load time 403 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
Lexia_W_LtIt.763dc789.woff woff swap
Size 32 KB
Load time 156 ms
Start 2.3 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~19 KB and ~38 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
1
preload
3
dns-prefetch
—
prefetch
—

4 resource hints configured

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
Network Waterfall
28 requests over 2473ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 2.3 s LCP 7.0 shttps://wolframalpha.com// https://wolframalpha.com/ — 301 — 184 B — 410 ms — h2https://www.wolframalpha.com/www.wolframalpha.com/ https://www.wolframalpha.com/ — 200 — 38.1 KiB — 765 ms — h2https://www.wolframalpha.com/_next/static/css/b86fd688f650caa5.csswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/css/b86fd688f650caa5.css — 200 — 2.9 KiB — 266 ms — h2https://www.wolframalpha.com/_next/static/css/3e5e2c10614026a5.csswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/css/3e5e2c10614026a5.css — 200 — 2.3 KiB — 263 ms — h2https://www.wolframalpha.com/_next/static/chunks/8798.f5faec180d9de442.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/8798.f5faec180d9de442.js — 200 — 5.0 KiB — 258 ms — h2https://www.wolframalpha.com/_next/static/chunks/5158.41b2a0edc99f4bf2.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/5158.41b2a0edc99f4bf2.js — 200 — 3.8 KiB — 260 ms — h2https://www.wolframalpha.com/_next/static/chunks/webpack-e631c0b9bc4c85ae.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/webpack-e631c0b9bc4c85ae.js — 200 — 3.7 KiB — 275 ms — h2https://www.wolframalpha.com/_next/static/chunks/framework-7e404342b933869f.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/framework-7e404342b933869f.js — 200 — 58.7 KiB — 706 ms — h2https://www.wolframalpha.com/_next/static/chunks/main-9c7afc91105fe70f.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/main-9c7afc91105fe70f.js — 200 — 36.5 KiB — 705 ms — h2https://www.wolframalpha.com/_next/static/chunks/pages/_app-5e36c1fbb0d9113d.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/pages/_app-5e36c1fbb0d9113d.js — 200 — 195.0 KiB — 730 ms — h2https://www.wolframalpha.com/_next/static/chunks/9afd5809-45a13b3d11fec1dd.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/9afd5809-45a13b3d11fec1dd.js — 200 — 84.5 KiB — 551 ms — h2https://www.wolframalpha.com/_next/static/chunks/4705-1f37cf179cd9bab9.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/4705-1f37cf179cd9bab9.js — 200 — 8.7 KiB — 269 ms — h2https://www.wolframalpha.com/_next/static/chunks/8020-c1252a00af52e09c.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/8020-c1252a00af52e09c.js — 200 — 3.7 KiB — 571 ms — h2https://www.wolframalpha.com/_next/static/chunks/4869-e9da3fb3526a80a2.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/4869-e9da3fb3526a80a2.js — 200 — 126.9 KiB — 729 ms — h2https://www.wolframalpha.com/_next/static/chunks/275-c6462c43c8fa56a7.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/275-c6462c43c8fa56a7.js — 200 — 64.7 KiB — 733 ms — h2https://www.wolframalpha.com/_next/static/chunks/2076-815fa431d95bd462.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/2076-815fa431d95bd462.js — 200 — 3.4 KiB — 572 ms — h2https://www.wolframalpha.com/_next/static/chunks/pages/index-af52cfcd888931b0.jswww.wolframalpha.com/_next/static/c... https://www.wolframalpha.com/_next/static/chunks/pages/index-af52cfcd888931b0.js — 200 — 11.4 KiB — 571 ms — h2https://www.wolframalpha.com/_next/static/WbTuK-0nortdGU19HhY8s/_buildManifest.jswww.wolframalpha.com/_next/static/W... https://www.wolframalpha.com/_next/static/WbTuK-0nortdGU19HhY8s/_buildManifest.js — 200 — 2.6 KiB — 569 ms — h2https://www.wolframalpha.com/_next/static/WbTuK-0nortdGU19HhY8s/_ssgManifest.jswww.wolframalpha.com/_next/static/W... https://www.wolframalpha.com/_next/static/WbTuK-0nortdGU19HhY8s/_ssgManifest.js — 200 — 291 B — 570 ms — h2https://www.wolframalpha.com/_next/static/images/spikey_59df5fb24a86abdf685d7dc14d5ab645.svgwww.wolframalpha.com/_next/static/i... https://www.wolframalpha.com/_next/static/images/spikey_59df5fb24a86abdf685d7dc14d5ab645.svg — 200 — 794 B — 474 ms — h2https://www.wolframalpha.com/_next/static/media/roboto-latin-italic-400.fac7cf37.woff2www.wolframalpha.com/_next/static/m... https://www.wolframalpha.com/_next/static/media/roboto-latin-italic-400.fac7cf37.woff2 — 200 — 11.4 KiB — 405 ms — h2https://www.wolframalpha.com/_next/static/media/Lexia_W_Lt.19c4cb27.woffwww.wolframalpha.com/_next/static/m... https://www.wolframalpha.com/_next/static/media/Lexia_W_Lt.19c4cb27.woff — 200 — 31.6 KiB — 405 ms — h2https://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-regular.090a5408.woff2www.wolframalpha.com/_next/static/m... https://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-regular.090a5408.woff2 — 200 — 14.2 KiB — 406 ms — h2https://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-600.96f36c1a.woff2www.wolframalpha.com/_next/static/m... https://www.wolframalpha.com/_next/static/media/source-sans-pro-v9-latin-600.96f36c1a.woff2 — 200 — 13.9 KiB — 404 ms — h2https://www.wolframalpha.com/_next/static/media/roboto-latin-400.7e0ffa28.woff2www.wolframalpha.com/_next/static/m... https://www.wolframalpha.com/_next/static/media/roboto-latin-400.7e0ffa28.woff2 — 200 — 10.2 KiB — 403 ms — h2https://www.wolframalpha.com/n/v1/api/randomizerwww.wolframalpha.com/n/v1/api/rando... https://www.wolframalpha.com/n/v1/api/randomizer — 200 — 591 B — 155 ms — h2https://www.wolframalpha.com/_next/static/media/Lexia_W_LtIt.763dc789.woffwww.wolframalpha.com/_next/static/m... https://www.wolframalpha.com/_next/static/media/Lexia_W_LtIt.763dc789.woff — 200 — 31.6 KiB — 156 ms — h2https://www.wolframalpha.com/_next/static/images/favicon_b48d893b991ff67016124a4d51822e63.icowww.wolframalpha.com/_next/static/i... https://www.wolframalpha.com/_next/static/images/favicon_b48d893b991ff67016124a4d51822e63.ico — 200 — 1.9 KiB — 156 ms — h2
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 3625ms · 551KB · $48/mo
www.wolframalpha.com
Other
Costly
Execution 1007ms
Transfer 59 KB
Unused 34%
Monthly Cost $13/mo
www.wolframalpha.com
Other
Costly
Execution 763ms
Transfer 38 KB
Monthly Cost $10/mo
www.wolframalpha.com
Other
Costly
Execution 645ms
Transfer 11 KB
Monthly Cost $9/mo
www.wolframalpha.com
Other
Costly
Execution 522ms
Transfer 195 KB
Unused 40%
Monthly Cost $7/mo
Unattributable
Other
Costly
Execution 354ms
Transfer 0 KB
Monthly Cost $5/mo
www.wolframalpha.com
Other
Optional
Execution 186ms
Transfer 36 KB
Monthly Cost $2/mo
www.wolframalpha.com
Other
Optional
Execution 76ms
Transfer 127 KB
Unused 57%
Monthly Cost $1/mo
www.wolframalpha.com
Other
Optional
Execution 72ms
Transfer 85 KB
Unused 60%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.wolframalpha.com adds 1007ms and costs ~$13/month
  • www.wolframalpha.com adds 763ms and costs ~$10/month
  • www.wolframalpha.com adds 645ms and costs ~$9/month
  • www.wolframalpha.com adds 522ms and costs ~$7/month
  • Unattributable adds 354ms and costs ~$5/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.wolframalpha.com takes 1007ms 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

www.wolframalpha.com takes 763ms 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

www.wolframalpha.com takes 645ms 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

www.wolframalpha.com takes 522ms 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 354ms 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

57% of www.wolframalpha.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

60% of www.wolframalpha.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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