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https://www.twosigma.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
1
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.
93
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.

824 ms

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

2.23 s

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

18.63 s

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

0.610

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

12.30 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.

24.83 s

Page Load Progression

2.5 s
5.0 s
7.6 s
10.1 s
12.6 s
15.1 s
17.6 s
20.2 s
Checks
14
8 PASS 1 REVIEW 3 FIX
F
Page Weight Budget
Action
16.8 MB transferred, 74 requests
FIX
16.8 MB transferred, 74 requests
Critical::
Page weighs 32.1 MB (16.8 MB transferred)
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Info::
Fonts are 512 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 512 KB
Info::
74 HTTP requests
Info::
Estimated 3.5 g CO2 per page load
16.8 MB / 2.4 MB budget
16.8 MB transferred
74 requests
3.5 g CO2 per page load
Other 14.8 MiB 88%
JavaScript 1.1 MiB 7%
Fonts 512.5 KiB 3%
Images 134.1 KiB 1%
CSS 97.9 KiB 1%
Other 55.9 KiB 0%
HTML 43.3 KiB 0%
Other 3.0 KiB 0%
Other 1.8 KiB 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

F
JS Execution Cost
Action
44617ms total JS execution
FIX
44617ms total JS execution
Warning::
https://www.twosigma.com/wp-content/themes/tsmb/as...: 42495ms CPU time
Warning::
Unattributable: 1011ms CPU time
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 565ms CPU time
Warning::
https://www.twosigma.com/cdn-cgi/challenge-platfor...: 257ms CPU time
Info::
https://www.twosigma.com/: 237ms CPU time
Info::
Third-party scripts: 1628ms (4% of total)

Main Thread Breakdown

Other 90% Script Evaluation 9%
ScriptTotalScriptingParse/CompileParty
https://www.twosigma.com/wp-content/themes/tsmb/assets/public/build/home-scripts.min.js?ver=2.0942495ms2885ms28ms1st
Unattributable1011ms245ms0ms3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js565ms398ms115ms3rd
https://www.twosigma.com/cdn-cgi/challenge-platform/scripts/jsd/main.js257ms243ms4ms1st
https://www.twosigma.com/237ms24ms2ms1st
https://www.googletagmanager.com/gtag/js?id=UA-1613156-152ms23ms29ms3rd
F
JS Bundles
Action
20 scripts, 703 KB unused
FIX
20 scripts, 703 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 170 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 170 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 170 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.twosigma.com/wp-content/themes/tsmb/as...: 99 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-161...: 75 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 703 KB
703 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB170 KB (47%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB170 KB (47%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB170 KB (47%)✓3rd
https://www.twosigma.com/wp-content/themes/tsmb/assets/public/build/home-scripts.min.js?ver=2.09206 KB99 KB (48%)✓1st
https://www.googletagmanager.com/gtag/js?id=UA-1613156-1116 KB75 KB (65%)✓3rd
https://www.twosigma.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.131 KB20 KB (65%)✓1st
https://www.google.com/recaptcha/api.js?render=6Lc0198ZAAAAAD5EhsOjjewxbB8aJI0ICIwtQuDc&ver=3.01 KB—✓3rd
https://www.twosigma.com/wp-includes/js/dist/i18n.min.js?ver=c26c3dc7bed3667933752 KB—✓1st
https://www.twosigma.com/wp-content/themes/tsmb/js/ajaxPosts.js?ver=2.092 KB—✓1st
https://www.twosigma.com/wp-content/plugins/cf7-conditional-fields/js/scripts.js?ver=2.6.69 KB—✗1st

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

C
Image Optimization
Action
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Warning::
https://www.twosigma.com/wp-content/themes/tsmb/as... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twosigma.com/wp-content/themes/tsmb/as... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twosigma.com/wp-content/uploads/2025/1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twosigma.com/wp-content/uploads/2026/0... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twosigma.com/wp-content/uploads/2025/1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
16 images 134 KB
0 oversized -0 KB
15 legacy format
5 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

A+
Third-Party Impact
5% third-party, 0 ms blocking
PASS
5% third-party, 0 ms blocking
Info::
Third-party code accounts for 5% of page weight (915.7 KiB of 16.8 MiB)
Info::
Third-party blocking time is low (0 ms)
95%
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+
Font Loading
4 fonts (512 KB)
PASS
4 fonts (512 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

512 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 824 ms LCP 2.2 shttps://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_light.otftt_commons_light.otf https://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_light.otf — 127.3 KiB — 0 ms — font-display: swaphttps://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_demibold.otftt_commons_demibold.otf https://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_demibold.otf — 130.8 KiB — 0 ms — font-display: swaphttps://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_medium.otftt_commons_medium.otf https://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_medium.otf — 127.1 KiB — 0 ms — font-display: swaphttps://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_thin.otftt_commons_thin.otf https://www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_thin.otf — 127.3 KiB — 0 ms — font-display: swap
tt_commons_light.otf otf swap
Size 127 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
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
tt_commons_demibold.otf otf swap
Size 131 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
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
tt_commons_medium.otf otf swap
Size 127 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
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
tt_commons_thin.otf otf swap
Size 127 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
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~410 KB and ~820 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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

A+
HTTP Caching
max-age=600 (10 minutes)
PASS
max-age=600 (10 minutes)
Info::
Cache-Control header is set
Got: max-age=600, must-revalidate
Info::
Effective TTL: 10 minutes (max-age=600)
Info::
Last-Modified header present
Cache-Control

max-age=600, must-revalidate

DirectiveValueMeaning
max-age600Cache for 10 minutes
must-revalidate—Must recheck with server after expiry
Effective TTL: 600 seconds
Network Waterfall
74 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
4% of JavaScript execution is third-party
First-party Third-party 1628ms · 116KB · $22/mo
Unattributable
Other
Costly
Execution 1011ms
Transfer 0 KB
Monthly Cost $13/mo
www.gstatic.com
Other
Costly
Execution 565ms
Transfer 0 KB
Unused 47%
Monthly Cost $8/mo
Google Tag Manager
Tag Manager
Optional
Execution 52ms
Transfer 116 KB
Unused 65%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 1011ms and costs ~$13/month
  • www.gstatic.com adds 565ms and costs ~$8/month

Unattributable takes 1011ms 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.gstatic.com takes 565ms 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

65% of Google Tag Manager'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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