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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
2
REVIEW
4
PASS
8
INFO
2

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

33
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
85
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.

2.05 s

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

8.62 s

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

117.01 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.

34.91 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.

130.12 s

Page Load Progression

5.7 s
11.4 s
17.0 s
22.7 s
28.4 s
34.1 s
39.8 s
45.5 s
Checks
16
8 PASS 4 REVIEW 2 FIX
F
Page Weight Budget
Action
4.3 MB transferred, 141 requests
FIX
4.3 MB transferred, 141 requests
Critical::
Page weighs 6.9 MB (4.3 MB transferred)
Warning::
Images are 3.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.0 MB
Warning::
JavaScript is 945 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 945 KB
Info::
Fonts are 228 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 228 KB
Warning::
141 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.90 g CO2 per page load
4.3 MB / 2.4 MB budget
4.3 MB transferred
141 requests
0.90 g CO2 per page load
Images 3.0 MiB 69%
JavaScript 945.0 KiB 22%
Fonts 228.2 KiB 5%
CSS 105.4 KiB 2%
HTML 47.8 KiB 1%
Other 18.8 KiB 0%
Other 10.5 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

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

F
JS Execution Cost
Action
180648ms total JS execution
FIX
180648ms total JS execution
Warning::
https://www.raycast.com/_next/static/chunks/1457-1...: 177474ms CPU time
Warning::
https://www.raycast.com/: 1499ms CPU time
Warning::
Unattributable: 828ms CPU time
Info::
https://www.raycast.com/_next/static/chunks/a3cd4a...: 192ms CPU time
Info::
https://www.raycast.com/_next/static/chunks/483.d9...: 158ms CPU time
Info::
Third-party scripts: 828ms (0% of total)

Main Thread Breakdown

Other 97%
ScriptTotalScriptingParse/CompileParty
https://www.raycast.com/_next/static/chunks/1457-1cbfd5f4accc960f.js177474ms2657ms40ms1st
https://www.raycast.com/1499ms13ms20ms1st
Unattributable828ms74ms0ms3rd
https://www.raycast.com/_next/static/chunks/a3cd4a83.7faf8bb8c7cc0fc1.js192ms184ms8ms1st
https://www.raycast.com/_next/static/chunks/483.d93b52f83c78da7b.js158ms86ms6ms1st
https://www.raycast.com/_next/static/chunks/4bd1b696-522b4eddb5284ccc.js117ms97ms11ms1st
https://www.raycast.com/_next/static/chunks/app/(marketing)/page-46f848b35b4c9178.js99ms85ms8ms1st
https://www.raycast.com/_next/static/chunks/b536a0f1.db02b69358250469.js82ms1ms81ms1st
https://www.raycast.com/_next/static/chunks/8334-c2f73d26b0d2223a.js78ms60ms3ms1st
https://www.raycast.com/_next/static/chunks/4987-a7e9d59bb71f4045.js64ms49ms14ms1st

Showing top 10 of 11 scripts

B
Image Optimization
56 images, 0 KB saveable
REVIEW
56 images, 0 KB saveable
Info::
All images are well-optimized
56 images 3.0 MB
0 oversized -0 KB
18 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
52 scripts, 235 KB unused
REVIEW
52 scripts, 235 KB unused
Warning::
https://www.raycast.com/_next/static/chunks/b536a0...: 89 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.raycast.com/_next/static/chunks/8404-5...: 62 KB unused (74%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.raycast.com/_next/static/chunks/1457-1...: 57 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.raycast.com/_next/static/chunks/9da6db...: 27 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 235 KB
235 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.raycast.com/_next/static/chunks/b536a0f1.db02b69358250469.js170 KB89 KB (52%)✓1st
https://www.raycast.com/_next/static/chunks/8404-5ed4495ccf2959e6.js84 KB62 KB (74%)✓1st
https://www.raycast.com/_next/static/chunks/1457-1cbfd5f4accc960f.js117 KB57 KB (49%)✓1st
https://www.raycast.com/_next/static/chunks/9da6db1e-935d756b3401bb3f.js57 KB27 KB (49%)✓1st
https://www.raycast.com/_next/static/chunks/webpack-e107c3776404b9ee.js4 KB—✓1st
https://www.raycast.com/_next/static/chunks/4bd1b696-522b4eddb5284ccc.js55 KB—✓1st
https://www.raycast.com/_next/static/chunks/main-app-94bcfd0cc2bed269.js2 KB—✓1st
https://www.raycast.com/_next/static/chunks/871a25da-b37af822121b367a.js12 KB—✓1st
https://www.raycast.com/_next/static/chunks/2619-89f7855908d46657.js2 KB—✓1st
https://www.raycast.com/_next/static/chunks/1356-ed358f947888c85f.js6 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

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
7% third-party, 0 ms blocking
PASS
7% third-party, 0 ms blocking
Info::
Third-party code accounts for 7% of page weight (286.6 KiB of 4.3 MiB)
Info::
Third-party blocking time is low (0 ms)
93%
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 (228 KB)
PASS
4 fonts (228 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

228 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 2.1 s LCP 8.6 shttps://www.raycast.com/_next/static/media/5b01f339abf2f1a5.p.woff25b01f339abf2f1a5.p.woff2 https://www.raycast.com/_next/static/media/5b01f339abf2f1a5.p.woff2 — 57.3 KiB — 0 ms — font-display: swaphttps://www.raycast.com/_next/static/media/bb3ef058b751a6ad-s.p.woff2bb3ef058b751a6ad-s.p.woff2 https://www.raycast.com/_next/static/media/bb3ef058b751a6ad-s.p.woff2 — 39.8 KiB — 0 ms — font-display: swaphttps://www.raycast.com/_next/static/media/e4af272ccee01ff0-s.p.woff2e4af272ccee01ff0-s.p.woff2 https://www.raycast.com/_next/static/media/e4af272ccee01ff0-s.p.woff2 — 47.5 KiB — 0 ms — font-display: swaphttps://www.raycast.com/_next/static/media/8e9860b6e62d6359-s.woff28e9860b6e62d6359-s.woff2 https://www.raycast.com/_next/static/media/8e9860b6e62d6359-s.woff2 — 83.5 KiB — 0 ms — font-display: swap
5b01f339abf2f1a5.p.woff2 woff2 swap
Size 57 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
bb3ef058b751a6ad-s.p.woff2 woff2 swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
e4af272ccee01ff0-s.p.woff2 woff2 swap
Size 48 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
8e9860b6e62d6359-s.woff2 woff2 swap
Size 84 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
23 hints, 0 missing preconnects
PASS
23 hints, 0 missing preconnects
Info::
Page uses 23 resource hint(s)

Current Resource Hints

preconnect
—
preload
+13
23
dns-prefetch
—
prefetch
—

23 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
141 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
0% of JavaScript execution is third-party
First-party Third-party 828ms · 0KB · €9/mo
Unattributable
Other
Costly
Execution 828ms
Transfer 0 KB
Monthly Cost €9/mo

These scripts may cost more than they're worth

  • Unattributable adds 828ms and costs ~€9/month

Unattributable takes 828ms 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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