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https://www.prisma.io

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
3
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
94
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
77
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.
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.

582 ms

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

1.21 s

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

86 ms

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

0.007

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

1.80 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.

2.23 s

Page Load Progression

532 ms
1.1 s
1.6 s
2.1 s
2.7 s
3.2 s
3.7 s
4.3 s
Checks
14
6 PASS 3 REVIEW 3 FIX
D
Page Weight Budget
Action
2.3 MB transferred, 105 requests
FIX
2.3 MB transferred, 105 requests
Info::
Page weighs 5.2 MB (2.3 MB transferred)
Warning::
JavaScript is 794 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 794 KB
Info::
Fonts are 420 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 420 KB
Warning::
105 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.48 g CO2 per page load
2.3 MB / 2.4 MB budget
2.3 MB transferred
105 requests
0.48 g CO2 per page load
Images 962.1 KiB 41%
JavaScript 794.3 KiB 34%
Fonts 419.9 KiB 18%
Other 86.0 KiB 4%
HTML 53.4 KiB 2%
CSS 44.3 KiB 2%
Other 3.9 KiB 0%
Other 260 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

D
JS Execution Cost
Action
3282ms total JS execution
FIX
3282ms total JS execution
Warning::
https://www.prisma.io/: 1339ms CPU time
Warning::
https://www.prisma.io/site-static/_next/static/chu...: 852ms CPU time
Warning::
https://proxyhog.prisma-data.net/static/posthog-re...: 349ms CPU time
Warning::
Unattributable: 289ms CPU time
Info::
https://www.prisma.io/site-static/_next/static/chu...: 248ms CPU time
Info::
Third-party scripts: 638ms (19% of total)

Main Thread Breakdown

Style & Layout 36% Script Evaluation 35% Other 18% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://www.prisma.io/1339ms9ms8ms1st
https://www.prisma.io/site-static/_next/static/chunks/0b67ccd61ccae070.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj852ms367ms1ms1st
https://proxyhog.prisma-data.net/static/posthog-recorder.js?v=1.364.4349ms315ms5ms3rd
Unattributable289ms18ms0ms3rd
https://www.prisma.io/site-static/_next/static/chunks/55ab220829433019.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj248ms224ms4ms1st
https://www.prisma.io/site-static/_next/static/chunks/156abb6c90a0c7cc.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj205ms188ms4ms1st
D
JS Bundles
Action
27 scripts, 312 KB unused
FIX
27 scripts, 312 KB unused
Warning::
https://www.prisma.io/site-static/_next/static/chu...: 121 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.prisma.io/site-static/_next/static/chu...: 48 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://proxyhog.prisma-data.net/static/posthog-re...: 46 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.prisma.io/site-static/_next/static/chu...: 27 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.prisma.io/site-static/_next/static/chu...: 25 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 312 KB
312 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.prisma.io/site-static/_next/static/chunks/23e9b289b6d26136.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj154 KB121 KB (80%)✓1st
https://www.prisma.io/site-static/_next/static/chunks/2724685019ebc7c1.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj72 KB48 KB (73%)✓1st
https://proxyhog.prisma-data.net/static/posthog-recorder.js?v=1.364.477 KB46 KB (60%)✓3rd
https://www.prisma.io/site-static/_next/static/chunks/156abb6c90a0c7cc.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj60 KB27 KB (47%)✓1st
https://www.prisma.io/site-static/_next/static/chunks/55ab220829433019.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj73 KB25 KB (36%)✓1st
https://www.prisma.io/site-static/_next/static/chunks/8566c171816e342a.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj29 KB23 KB (89%)✓1st
https://proxyhog.prisma-data.net/static/surveys.js?v=1.364.430 KB22 KB (76%)✓3rd
https://www.prisma.io/site-static/_next/static/chunks/fe40fe44b93693f7.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj31 KB—✓1st
https://www.prisma.io/site-static/_next/static/chunks/10af8b757b77d489.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj6 KB—✓1st
https://www.prisma.io/site-static/_next/static/chunks/37ed35ca710f52e9.js?dpl=dpl_HgPvUg6EwrBqd6TdZZuBdzdW8hZj56 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

B
Image Optimization
48 images, 0 KB saveable
REVIEW
48 images, 0 KB saveable
Info::
All images are well-optimized
48 images 962 KB
0 oversized -0 KB
46 legacy format
0 missing dimensions CLS risk
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
ETag present — enables conditional (304) responses
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Third-Party Impact
9% third-party, 0 ms blocking
PASS
9% third-party, 0 ms blocking
Info::
Third-party code accounts for 9% of page weight (221.3 KiB of 2.3 MiB)
Info::
Third-party blocking time is low (0 ms)
91%
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
7 fonts (420 KB)
PASS
7 fonts (420 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

420 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 582 ms LCP 1.2 shttps://www.prisma.io/site-static/_next/static/media/83afe278b6a6bb3c-s.p.3a6ba036.woff283afe278b6a6bb3c-s.p.3a... https://www.prisma.io/site-static/_next/static/media/83afe278b6a6bb3c-s.p.3a6ba036.woff2 — 50.6 KiB — 0 ms — font-display: swaphttps://www.prisma.io/site-static/_next/static/media/MonaSansVF[wdth,wght,opsz,ital].8a501443.woff2MonaSansVF[wdth,wght,op... https://www.prisma.io/site-static/_next/static/media/MonaSansVF[wdth,wght,opsz,ital].8a501443.woff2 — 309.3 KiB — 0 ms — font-display: swaphttps://www.prisma.io/site-static/_next/static/media/MonaSansMonoVF[wght].d9e878c1.woff2MonaSansMonoVF[wght].d9... https://www.prisma.io/site-static/_next/static/media/MonaSansMonoVF[wght].d9e878c1.woff2 — 39.8 KiB — 0 ms — font-display: swapdata:font/woff2;base64,d09GMk9UVE8AAAioAAkAAAAAEEQAAAhiAAA3AAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD…woff2;base64,d09GMk9UVE... data:font/woff2;base64,d09GMk9UVE8AAAioAAkAAAAAEEQAAAhiAAA3AAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD… — 2.2 KiB — 0 ms — font-display: swapdata:font/woff2;base64,d09GMk9UVE8AAAyAAAkAAAAAFx0AAAw6AAA3AAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD…woff2;base64,d09GMk9UVE... data:font/woff2;base64,d09GMk9UVE8AAAyAAAkAAAAAFx0AAAw6AAA3AAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD… — 3.1 KiB — 0 ms — font-display: swapdata:font/woff2;base64,d09GMk9UVE8AAAmUAAkAAAAAD7IAAAlPAACZAAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD…woff2;base64,d09GMk9UVE... data:font/woff2;base64,d09GMk9UVE8AAAmUAAkAAAAAD7IAAAlPAACZAAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD… — 2.4 KiB — 0 ms — font-display: swapdata:font/woff2;base64,d09GMk9UVE8AADHsAAkAAAAAYIkAADGkAACZAAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD…woff2;base64,d09GMk9UVE... data:font/woff2;base64,d09GMk9UVE8AADHsAAkAAAAAYIkAADGkAACZAAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD… — 12.5 KiB — 0 ms — font-display: swap
83afe278b6a6bb3c-s.p.3a... woff2 swap
Size 51 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
MonaSansVF[wdth,wght,op... woff2 swap
Size 309 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
MonaSansMonoVF[wght].d9... woff2 swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
woff2;base64,d09GMk9UVE... woff2 swap
Size 2 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
woff2;base64,d09GMk9UVE... woff2 swap
Size 3 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
woff2;base64,d09GMk9UVE... woff2 swap
Size 2 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
woff2;base64,d09GMk9UVE... woff2 swap
Size 12 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)

Fixing the unchecked items could save ~155 KB and ~310 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
105 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
19% of JavaScript execution is third-party
First-party Third-party 638ms · 77KB · $8/mo
proxyhog.prisma-data.net
Other
Costly
Execution 349ms
Transfer 77 KB
Unused 60%
Monthly Cost $5/mo
Unattributable
Other
Costly
Execution 289ms
Transfer 0 KB
Monthly Cost $4/mo

These scripts may cost more than they're worth

  • proxyhog.prisma-data.net adds 349ms and costs ~$5/month
  • Unattributable adds 289ms and costs ~$4/month

proxyhog.prisma-data.net takes 349ms 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 proxyhog.prisma-data.net'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

Unattributable takes 289ms 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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