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https://www.plaid.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
5
REVIEW
1
PASS
8
INFO
2

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

Mobile Desktop
38
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.

2.63 s

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

15.14 s

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

1.51 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.

7.45 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.

17.37 s

Page Load Progression

567 ms
1.1 s
1.7 s
2.3 s
2.8 s
3.4 s
4.0 s
4.5 s
Checks
16
8 PASS 1 REVIEW 5 FIX
F
Page Weight Budget
Action
2.7 MB transferred, 71 requests
FIX
2.7 MB transferred, 71 requests
Warning::
Page weighs 9.2 MB (2.7 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::
71 HTTP requests
Info::
Estimated 0.58 g CO2 per page load
2.7 MB / 2.4 MB budget
2.7 MB transferred
71 requests
0.58 g CO2 per page load
JavaScript 1.6 MiB 59%
Fonts 546.3 KiB 19%
Images 463.9 KiB 17%
CSS 77.0 KiB 3%
HTML 45.3 KiB 2%
Other 3.7 KiB 0%
Other 2.8 KiB 0%
Other 873 B 0%
Other 684 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 (2.7 MiB of 2.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5521ms total JS execution
FIX
5521ms total JS execution
Warning::
https://plaid.com/_next/static/chunks/framework-57...: 2228ms CPU time
Warning::
https://plaid.com/_next/static/chunks/pages/_app-3...: 1810ms CPU time
Warning::
https://plaid.com/en-eu/: 534ms CPU time
Warning::
https://go.plaid.com/js/forms2/js/forms2.min.js: 393ms CPU time
Warning::
Unattributable: 387ms CPU time
Warning::
Third-party scripts: 5521ms (100% of total)

Main Thread Breakdown

Script Evaluation 59% Other 12% Style & Layout 11% Script Parsing & Compilation 10% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://plaid.com/_next/static/chunks/framework-57847b52bcbe24f7.js2228ms2008ms15ms3rd
https://plaid.com/_next/static/chunks/pages/_app-38f9bd0a09b3ad73.js1810ms865ms344ms3rd
https://plaid.com/en-eu/534ms29ms6ms3rd
https://go.plaid.com/js/forms2/js/forms2.min.js393ms251ms31ms3rd
Unattributable387ms10ms0ms3rd
https://plaid.com/_next/static/chunks/pages/en-eu-a3fe8877d55cdaf8.js169ms165ms1ms3rd
F
JS Bundles
Action
31 scripts, 916 KB unused
FIX
31 scripts, 916 KB unused
Warning::
https://plaid.com/_next/static/chunks/pages/_app-3...: 586 KB unused (61%)
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: 33 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 916 KB
916 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://plaid.com/_next/static/chunks/pages/_app-38f9bd0a09b3ad73.js969 KB586 KB (61%)✓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 KB33 KB (50%)✓3rd
https://go.plaid.com/js/forms2/js/forms2.min.js68 KB33 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/40722-a4a66d53ef0d31bd.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

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
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
13 images, 0 KB saveable
PASS
13 images, 0 KB saveable
Info::
All images are well-optimized
13 images 464 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 2.6 s LCP 15.1 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
25 hints, 0 missing preconnects
PASS
25 hints, 0 missing preconnects
Info::
Page uses 25 resource hint(s)

Current Resource Hints

preconnect
3
preload
+9
19
dns-prefetch
3
prefetch
—

25 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
71 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 5521ms · 1075KB · €96/mo
plaid.com
Other
Costly
Execution 2228ms
Transfer 56 KB
Unused 40%
Monthly Cost €39/mo
plaid.com
Other
Costly
Execution 1810ms
Transfer 969 KB
Unused 61%
Monthly Cost €31/mo
plaid.com
Other
Costly
Execution 534ms
Transfer 44 KB
Monthly Cost €9/mo
go.plaid.com
Other
Costly
Execution 393ms
Transfer 0 KB
Unused 50%
Monthly Cost €7/mo
Unattributable
Other
Costly
Execution 387ms
Transfer 0 KB
Monthly Cost €7/mo
plaid.com
Other
Optional
Execution 169ms
Transfer 5 KB
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • plaid.com adds 2228ms and costs ~€39/month
  • plaid.com adds 1810ms and costs ~€31/month
  • plaid.com adds 534ms and costs ~€9/month
  • go.plaid.com adds 393ms and costs ~€7/month
  • Unattributable adds 387ms and costs ~€7/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 2228ms 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 1810ms 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

61% 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 534ms 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

go.plaid.com takes 393ms 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 387ms 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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