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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
26
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
67
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.
85
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.

5.43 s

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

25.79 s

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

9.66 s

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

0.004

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

10.98 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.

28.29 s

Page Load Progression

784 ms
1.6 s
2.4 s
3.1 s
3.9 s
4.7 s
5.5 s
6.3 s
Checks
16
8 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
6.0 MB transferred, 203 requests
FIX
6.0 MB transferred, 203 requests
Critical::
Page weighs 9.5 MB (6.0 MB transferred)
Warning::
Images are 4.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 4.3 MB
Info::
Fonts are 563 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 563 KB
Warning::
203 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.2 g CO2 per page load
6.0 MB / 2.4 MB budget
6.0 MB transferred
203 requests
1.2 g CO2 per page load
Images 4.3 MiB 72%
Fonts 562.9 KiB 9%
JavaScript 486.0 KiB 8%
HTML 299.6 KiB 5%
Other 191.1 KiB 3%
CSS 135.0 KiB 2%
Other 1.6 KiB 0%
Other 1.3 KiB 0%
Other 1.0 KiB 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

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

D
Third-Party Impact
Action
91% third-party, 0 ms blocking
FIX
91% third-party, 0 ms blocking
Warning::
Third-party code accounts for 91% of page weight (5.4 MiB of 6.0 MiB)
Info::
Third-party blocking time is low (0 ms)
91%
First-party Third-party
F
JS Execution Cost
Action
20155ms total JS execution
FIX
20155ms total JS execution
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h...: 13271ms CPU time
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h...: 2519ms CPU time
Warning::
https://www.wolfram.com/assets/js/script.min.js.en...: 1966ms CPU time
Warning::
Unattributable: 1202ms CPU time
Warning::
https://www.wolfram.com/: 668ms CPU time
Warning::
Third-party scripts: 17200ms (85% of total)

Main Thread Breakdown

Other 58% Style & Layout 31% Script Evaluation 9%
ScriptTotalScriptingParse/CompileParty
https://files.wolframcdn.com/pub/www.wolfram.com/home/js/gsap/gsap.3.13.0.min.js13271ms676ms5ms3rd
https://files.wolframcdn.com/pub/www.wolfram.com/home/js/gsap/ScrollTrigger.3.13.0.js2519ms124ms4ms3rd
https://www.wolfram.com/assets/js/script.min.js.en?v=2025100910051966ms618ms2ms1st
Unattributable1202ms18ms0ms3rd
https://www.wolfram.com/668ms33ms2ms1st
https://www.wolfram.com/common/js/jquery/3.7.1/jquery.min.js320ms82ms9ms1st
https://cdn.livechatinc.com/tracking.js152ms124ms14ms3rd
https://api.livechatinc.com/v3.6/customer/action/get_configuration?organization_id=18918ef5-a2f2-474a-b6e0-80743fa7f8e0&version=2691.0.6.3751.689.726.684.12.6.1.5.35.6&x-region=us-south1&group_id=13&jsonp=__lc_static_config56ms53ms1ms3rd
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
Image Optimization
Action
144 images, 0 KB saveable
REVIEW
144 images, 0 KB saveable
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://files.wolframcdn.com/pub/www.wolfram.com/h... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
144 images 4.3 MB
0 oversized -0 KB
25 legacy format
51 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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 (563 KB)
PASS
9 fonts (563 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

563 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s FCP 5.4 s LCP 25.8 shttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-Regular.woff2SourceSansPro-Regular.w... https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-Regular.woff2 — 94.2 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-Italic.woff2SourceSansPro-Italic.woff2 https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-Italic.woff2 — 41.0 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-SemiBold.woff2SourceSansPro-SemiBold.... https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-SemiBold.woff2 — 92.4 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-SemiBoldItalic.woff2SourceSansPro-SemiBoldI... https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-SemiBoldItalic.woff2 — 40.9 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-Light.woff2SourceSansPro-Light.woff2 https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-Light.woff2 — 91.2 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-LightItalic.woff2SourceSansPro-LightItal... https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-LightItalic.woff2 — 40.4 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-ExtraLight.woff2SourceSansPro-ExtraLigh... https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-ExtraLight.woff2 — 87.8 KiB — 0 ms — font-display: swaphttps://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-ExtraLightItalic.woff2SourceSansPro-ExtraLigh... https://files.wolframcdn.com/pub/fonts/source-sans-pro/1.0/SourceSansPro-ExtraLightItalic.woff2 — 39.1 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/notoserif/v33/ga6daw1J5X9T9RW6j9bNVls-hfgvz8JcMofYTYf6D33WsNFH.woff2ga6daw1J5X9T9RW6j9bNVls... https://fonts.gstatic.com/s/notoserif/v33/ga6daw1J5X9T9RW6j9bNVls-hfgvz8JcMofYTYf6D33WsNFH.woff2 — 35.9 KiB — 0 ms — font-display: swap
SourceSansPro-Regular.w... woff2 swap
Size 94 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-Italic.woff2 woff2 swap
Size 41 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-SemiBold.... woff2 swap
Size 92 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-SemiBoldI... woff2 swap
Size 41 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-Light.woff2 woff2 swap
Size 91 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-LightItal... woff2 swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-ExtraLigh... woff2 swap
Size 88 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-ExtraLigh... woff2 swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ga6daw1J5X9T9RW6j9bNVls... woff2 swap
Size 36 KB
Load time 0 ms
Start 0 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)
A
JS Bundles
34 scripts, 0 KB unused
PASS
34 scripts, 0 KB unused
Warning::
https://www.wolfram.com/common/js/announcements/sc...: unminified — 9 KB could be saved
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.wolfram.com/common/consent/cookie-consent.js4 KB—✓1st
https://www.wolfram.com/common/javascript/wal/latest/walLoad.js1 KB—✓1st
https://www.wolfram.com/common/js/announcements/script.js16 KB—✗1st
https://www.wolfram.com/common/framework/js/head.en.js2 KB—✓1st
https://www.wolfram.com/common/js/jquery/3.7.1/jquery.min.js29 KB—✓1st
https://www.wolfram.com/common/js/jquery/plugins/migrate/3.5.2/jquery.migrate.min.js5 KB—✓1st
https://www.wolfram.com/common/javascript/analytics.js11 KB—✗1st
https://files.wolframcdn.com/pub/www.wolfram.com/home/js/gsap/gsap.3.13.0.min.js28 KB—✓3rd
https://files.wolframcdn.com/pub/www.wolfram.com/home/js/gsap/ScrollTrigger.3.13.0.js18 KB—✓3rd
https://files.wolframcdn.com/pub/www.wolfram.com/home/js/gsap/Flip.3.13.0.min.js10 KB—✓3rd
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
9 hints, 0 missing preconnects
PASS
9 hints, 0 missing preconnects
Info::
Page uses 9 resource hint(s)

Current Resource Hints

preconnect
—
preload
9
dns-prefetch
—
prefetch
—

9 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
203 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
85% of JavaScript execution is third-party
First-party Third-party 17200ms · 80KB · $228/mo
files.wolframcdn.com
Other
Costly
Execution 13271ms
Transfer 28 KB
Monthly Cost $176/mo
files.wolframcdn.com
Other
Costly
Execution 2519ms
Transfer 18 KB
Monthly Cost $33/mo
Unattributable
Other
Costly
Execution 1202ms
Transfer 0 KB
Monthly Cost $16/mo
LiveChat
Chat
Optional
Execution 152ms
Transfer 33 KB
Monthly Cost $2/mo
api.livechatinc.com
Other
Optional
Execution 56ms
Transfer 2 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • files.wolframcdn.com adds 13271ms and costs ~$176/month
  • files.wolframcdn.com adds 2519ms and costs ~$33/month
  • Unattributable adds 1202ms and costs ~$16/month

85% 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

files.wolframcdn.com takes 13271ms 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

files.wolframcdn.com takes 2519ms 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 1202ms 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

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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