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https://www.plaid.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
4
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.

1.09 s

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

3.39 s

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

284 ms

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.

2.44 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.

3.84 s

Page Load Progression

564 ms
1.1 s
1.7 s
2.3 s
2.8 s
3.4 s
3.9 s
4.5 s
Checks
14
6 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
3.3 MB transferred, 73 requests
FIX
3.3 MB transferred, 73 requests
Warning::
Page weighs 9.7 MB (3.3 MB transferred)
Warning::
JavaScript is 1.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.6 MB
Info::
Fonts are 546 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 546 KB
Info::
73 HTTP requests
Info::
Estimated 0.68 g CO2 per page load
3.3 MB / 2.4 MB budget
3.3 MB transferred
73 requests
0.68 g CO2 per page load
JavaScript 1.6 MiB 50%
Images 982.1 KiB 29%
Fonts 546.3 KiB 16%
CSS 77.1 KiB 2%
HTML 45.3 KiB 1%
Other 3.7 KiB 0%
Other 2.8 KiB 0%
Other 871 B 0%
Other 683 B 0%
Other 76 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

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 (3.3 MiB of 3.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
32 scripts, 912 KB unused
FIX
32 scripts, 912 KB unused
Warning::
https://plaid.com/_next/static/chunks/pages/_app-3...: 581 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://plaid.com/_next/static/chunks/4b358913-307...: 75 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://plaid.com/_next/static/chunks/53483-43c320...: 63 KB unused (97%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://plaid.com/_next/static/chunks/29622-36035f...: 57 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://go.plaid.com/js/forms2/js/forms2.min.js: 34 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 912 KB
912 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://plaid.com/_next/static/chunks/pages/_app-38f9bd0a09b3ad73.js969 KB581 KB (60%)✓3rd
https://plaid.com/_next/static/chunks/4b358913-307739a2a8d60d69.js92 KB75 KB (81%)✓3rd
https://plaid.com/_next/static/chunks/53483-43c32015aa4bbb76.js65 KB63 KB (97%)✓3rd
https://plaid.com/_next/static/chunks/29622-36035f2d8305cf63.js133 KB57 KB (43%)✓3rd
https://go.plaid.com/js/forms2/js/forms2.min.js0 KB34 KB (50%)✓3rd
https://go.plaid.com/js/forms2/js/forms2.min.js68 KB34 KB (50%)✓3rd
https://plaid.com/_next/static/chunks/94323-48334ac9cde88c9e.js25 KB24 KB (99%)✓3rd
https://plaid.com/_next/static/chunks/framework-57847b52bcbe24f7.js56 KB22 KB (40%)✓3rd
https://plaid.com/_next/static/chunks/b637e9a5-9d3be992dc61993b.js30 KB22 KB (76%)✓3rd
https://plaid.com/_next/static/chunks/82308-45bd8d6d448f4372.js6 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
1702ms total JS execution
REVIEW
1702ms total JS execution
Warning::
https://plaid.com/_next/static/chunks/pages/_app-3...: 633ms CPU time
Warning::
https://plaid.com/_next/static/chunks/framework-57...: 617ms CPU time
Info::
https://plaid.com/en-eu/: 200ms CPU time
Info::
https://go.plaid.com/js/forms2/js/forms2.min.js: 135ms CPU time
Info::
Unattributable: 117ms CPU time
Warning::
Third-party scripts: 1702ms (100% of total)

Main Thread Breakdown

Script Evaluation 55% Other 16% Style & Layout 12% Script Parsing & Compilation 9% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://plaid.com/_next/static/chunks/pages/_app-38f9bd0a09b3ad73.js633ms282ms93ms3rd
https://plaid.com/_next/static/chunks/framework-57847b52bcbe24f7.js617ms559ms10ms3rd
https://plaid.com/en-eu/200ms7ms1ms3rd
https://go.plaid.com/js/forms2/js/forms2.min.js135ms82ms9ms3rd
Unattributable117ms3ms0ms3rd
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+
Image Optimization
14 images, 0 KB saveable
PASS
14 images, 0 KB saveable
Info::
All images are well-optimized
14 images 982 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
16 fonts (546 KB)
PASS
16 fonts (546 KB)
Info::
16 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

16

546 KB total

Render-blocking

0

of 16

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 FCP 1.1 s LCP 3.4 shttps://plaid.com/assets/fonts/PlaidSans-Medium.woff2PlaidSans-Medium.woff2 https://plaid.com/assets/fonts/PlaidSans-Medium.woff2 — 36.1 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/PlaidSans-Regular.woff2PlaidSans-Regular.woff2 https://plaid.com/assets/fonts/PlaidSans-Regular.woff2 — 30.6 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/PlaidSans-Bold.woff2PlaidSans-Bold.woff2 https://plaid.com/assets/fonts/PlaidSans-Bold.woff2 — 37.0 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/PlaidSans-SemiBold.woff2PlaidSans-SemiBold.woff2 https://plaid.com/assets/fonts/PlaidSans-SemiBold.woff2 — 36.7 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/cern-bold.woff2cern-bold.woff2 https://plaid.com/assets/fonts/cern-bold.woff2 — 22.3 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/cern-extrabold.woff2cern-extrabold.woff2 https://plaid.com/assets/fonts/cern-extrabold.woff2 — 22.4 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/cern-italic.woff2cern-italic.woff2 https://plaid.com/assets/fonts/cern-italic.woff2 — 26.4 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/cern-medium.woff2cern-medium.woff2 https://plaid.com/assets/fonts/cern-medium.woff2 — 22.0 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/cern-regular.woff2cern-regular.woff2 https://plaid.com/assets/fonts/cern-regular.woff2 — 21.7 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/cern-semibold.woff2cern-semibold.woff2 https://plaid.com/assets/fonts/cern-semibold.woff2 — 22.4 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/Inconsolata-Bold.woff2Inconsolata-Bold.woff2 https://plaid.com/assets/fonts/Inconsolata-Bold.woff2 — 42.7 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/Inconsolata-Regular.woff2Inconsolata-Regular.woff2 https://plaid.com/assets/fonts/Inconsolata-Regular.woff2 — 37.6 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/BoweryStreet-Bold.woff2BoweryStreet-Bold.woff2 https://plaid.com/assets/fonts/BoweryStreet-Bold.woff2 — 46.9 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/BoweryStreet-Light.woff2BoweryStreet-Light.woff2 https://plaid.com/assets/fonts/BoweryStreet-Light.woff2 — 46.8 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/BoweryStreet-Medium.woff2BoweryStreet-Medium.woff2 https://plaid.com/assets/fonts/BoweryStreet-Medium.woff2 — 47.4 KiB — 0 ms — font-display: swaphttps://plaid.com/assets/fonts/BoweryStreet-Regular.woff2BoweryStreet-Regular.woff2 https://plaid.com/assets/fonts/BoweryStreet-Regular.woff2 — 47.3 KiB — 0 ms — font-display: swap
PlaidSans-Medium.woff2 woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
PlaidSans-Regular.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
PlaidSans-Bold.woff2 woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
PlaidSans-SemiBold.woff2 woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cern-bold.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cern-extrabold.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cern-italic.woff2 woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cern-medium.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cern-regular.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cern-semibold.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Inconsolata-Bold.woff2 woff2 swap
Size 43 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Inconsolata-Regular.woff2 woff2 swap
Size 38 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BoweryStreet-Bold.woff2 woff2 swap
Size 47 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BoweryStreet-Light.woff2 woff2 swap
Size 47 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BoweryStreet-Medium.woff2 woff2 swap
Size 47 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BoweryStreet-Regular.woff2 woff2 swap
Size 47 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+
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
73 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
100% of JavaScript execution is third-party
First-party Third-party 1702ms · 1070KB · €30/mo
plaid.com
Other
Costly
Execution 633ms
Transfer 969 KB
Unused 60%
Monthly Cost €11/mo
plaid.com
Other
Costly
Execution 617ms
Transfer 56 KB
Unused 40%
Monthly Cost €11/mo
plaid.com
Other
Costly
Execution 200ms
Transfer 44 KB
Monthly Cost €3/mo
go.plaid.com
Other
Optional
Execution 135ms
Transfer 0 KB
Unused 50%
Monthly Cost €2/mo
Unattributable
Other
Optional
Execution 117ms
Transfer 0 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • plaid.com adds 633ms and costs ~€11/month
  • plaid.com adds 617ms and costs ~€11/month
  • plaid.com adds 200ms 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

plaid.com takes 633ms 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

60% of plaid.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

plaid.com takes 617ms 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

plaid.com takes 200ms 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

50% of go.plaid.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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