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https://www.mathworks.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
2
REVIEW
5
PASS
5
INFO
2

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

Mobile Desktop
85
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

405 ms

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

1.40 s

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

240 ms

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

0.086

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

1.03 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.

3.20 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
14
5 PASS 5 REVIEW 2 FIX
F
Page Weight Budget
Action
2.7 MB transferred, 115 requests
FIX
2.7 MB transferred, 115 requests
Warning::
Page weighs 7.1 MB (2.7 MB transferred)
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Info::
Fonts are 200 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 200 KB
Warning::
115 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.57 g CO2 per page load
2.7 MB / 2.4 MB budget
2.7 MB transferred
115 requests
0.57 g CO2 per page load
JavaScript 1.4 MiB 50%
Images 960.8 KiB 34%
Fonts 200.2 KiB 7%
Other 83.0 KiB 3%
CSS 66.4 KiB 2%
Other 55.3 KiB 2%
HTML 20.4 KiB 1%
Other 1.4 KiB 0%
Other 0 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over 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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

F
JS Bundles
Action
42 scripts, 550 KB unused
FIX
42 scripts, 550 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 245 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-102...: 79 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cmp.inmobi.com/tcfv2/cmp2.js?referer=mathw...: 57 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.mathworks.com/O79LJpUfgI/h8OsFF/mBe-/w...: 38 KB unused (22%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/fbevents.js: 37 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 550 KB
550 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB245 KB (68%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-1023777138&l=dataLayer138 KB79 KB (57%)✓3rd
https://cmp.inmobi.com/tcfv2/cmp2.js?referer=mathworks.com117 KB57 KB (49%)✓3rd
https://www.mathworks.com/O79LJpUfgI/h8OsFF/mBe-/wuEapcLbrkJGtS/RwZjAQ/S00-eh/JhZxcB175 KB38 KB (22%)✓1st
https://connect.facebook.net/en_US/fbevents.js95 KB37 KB (39%)✓3rd
https://s.go-mpulse.net/boomerang/LERXA-6VNES-W6PXS-U8C7F-BXSZH56 KB37 KB (65%)✓3rd
https://assets.adobedtm.com/d0cc0600946eb3957f703b9fe43c3590597a8c2c/satelliteLib-e8d23c2e444abadc572df06537e2def59c01db09.js167 KB36 KB (22%)✓3rd
https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/components/jquery.min.20260310205237136.js33 KB22 KB (67%)✓1st
https://assets.adobedtm.com/extensions/EP6326e4d6b32f4a71ad5204459cc57d66/AppMeasurement_Module_ActivityMap.min.js2 KB—✓3rd
https://www.recaptcha.net/recaptcha/enterprise.js?render=6Lc7vGMbAAAAAClHjBQhM1emcXDj9GtwMi9HKbgZ2 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
Third-Party Impact
44% third-party, 0 ms blocking
REVIEW
44% third-party, 0 ms blocking
Info::
Third-party code accounts for 44% of page weight (1.2 MiB of 2.7 MiB)
Info::
Third-party blocking time is low (0 ms)
56%
44%
First-party Third-party
B
Image Optimization
30 images, 0 KB saveable
REVIEW
30 images, 0 KB saveable
Info::
All images are well-optimized
30 images 961 KB
0 oversized -0 KB
28 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1126ms total JS execution
REVIEW
1126ms total JS execution
Warning::
https://assets.adobedtm.com/d0cc0600946eb3957f703b...: 260ms CPU time
Info::
https://www.mathworks.com/: 221ms CPU time
Info::
https://www.mathworks.com/O79LJpUfgI/h8OsFF/mBe-/w...: 207ms CPU time
Info::
Unattributable: 202ms CPU time
Info::
https://cmp.inmobi.com/tcfv2/cmp2.js?referer=mathw...: 91ms CPU time
Warning::
Third-party scripts: 699ms (62% of total)

Main Thread Breakdown

Script Evaluation 58% Other 16% Script Parsing & Compilation 11% Style & Layout 10%
ScriptTotalScriptingParse/CompileParty
https://assets.adobedtm.com/d0cc0600946eb3957f703b9fe43c3590597a8c2c/satelliteLib-e8d23c2e444abadc572df06537e2def59c01db09.js260ms226ms24ms3rd
https://www.mathworks.com/221ms12ms1ms1st
https://www.mathworks.com/O79LJpUfgI/h8OsFF/mBe-/wuEapcLbrkJGtS/RwZjAQ/S00-eh/JhZxcB207ms184ms18ms1st
Unattributable202ms11ms0ms3rd
https://cmp.inmobi.com/tcfv2/cmp2.js?referer=mathworks.com91ms64ms18ms3rd
https://cl.qualaroo.com/ki.js/49559/ahy.js88ms66ms13ms3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js58ms30ms28ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
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
9 fonts (200 KB)
PASS
9 fonts (200 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

200 KB total

Render-blocking

0

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 405 ms LCP 1.4 shttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-300.20260310205237136.woff2roboto-latin-italic-300... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-300.20260310205237136.woff2 — 22.5 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-400.20260310205237136.woff2roboto-latin-italic-400... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-400.20260310205237136.woff2 — 17.5 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-500.20260310205237136.woff2roboto-latin-italic-500... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-500.20260310205237136.woff2 — 17.5 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-700.20260310205237136.woff2roboto-latin-italic-700... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-italic-700.20260310205237136.woff2 — 17.2 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-300.20260310205237136.woff2roboto-latin-normal-300... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-300.20260310205237136.woff2 — 20.8 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-400.20260310205237136.woff2roboto-latin-normal-400... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-400.20260310205237136.woff2 — 16.0 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-500.20260310205237136.woff2roboto-latin-normal-500... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-500.20260310205237136.woff2 — 16.1 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-700.20260310205237136.woff2roboto-latin-normal-700... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/roboto/roboto-latin-normal-700.20260310205237136.woff2 — 16.0 KiB — 0 ms — font-display: swaphttps://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/mathworks.20260310205237136.woffmathworks.2026031020523... https://www.mathworks.com/etc.clientlibs/mathworks/clientlibs/customer-ui/templates/common/resources/fonts/mathworks.20260310205237136.woff — 56.4 KiB — 0 ms — font-display: swap
roboto-latin-italic-300... woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-italic-400... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-italic-500... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-italic-700... woff2 swap
Size 17 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-normal-300... woff2 swap
Size 21 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-normal-400... woff2 swap
Size 16 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-normal-500... woff2 swap
Size 16 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-latin-normal-700... woff2 swap
Size 16 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
mathworks.2026031020523... woff swap
Size 56 KB
Load time 0 ms
Start 0 ms
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 ~17 KB and ~34 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
Network Waterfall
115 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
62% of JavaScript execution is third-party
First-party Third-party 699ms · 724KB · $9/mo
assets.adobedtm.com
Other
Costly
Execution 260ms
Transfer 167 KB
Unused 22%
Monthly Cost $3/mo
Unattributable
Other
Costly
Execution 202ms
Transfer 0 KB
Monthly Cost $3/mo
cmp.inmobi.com
Other
Optional
Execution 91ms
Transfer 117 KB
Unused 49%
Monthly Cost $1/mo
cl.qualaroo.com
Other
Optional
Execution 88ms
Transfer 78 KB
Monthly Cost $1/mo
www.gstatic.com
Other
Optional
Execution 58ms
Transfer 363 KB
Unused 68%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • assets.adobedtm.com adds 260ms and costs ~$3/month
  • Unattributable adds 202ms and costs ~$3/month

62% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

assets.adobedtm.com takes 260ms 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 202ms 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

68% of www.gstatic.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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