Skip to content
https://www.cursor.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
67
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.
73
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.

1.11 s

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

2.40 s

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

273 ms

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

0.004

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

3.14 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.

6.82 s

Page Load Progression

963 ms
1.9 s
2.9 s
3.9 s
4.8 s
5.8 s
6.7 s
7.7 s
Checks
14
5 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
9.0 MB transferred, 234 requests
FIX
9.0 MB transferred, 234 requests
Critical::
Page weighs 18.8 MB (9.0 MB transferred)
Warning::
Images are 4.8 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 4.8 MB
Warning::
JavaScript is 2.9 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.9 MB
Info::
Fonts are 654 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 654 KB
Warning::
234 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.9 g CO2 per page load
9.0 MB / 2.4 MB budget
9.0 MB transferred
234 requests
1.9 g CO2 per page load
Images 4.8 MiB 53%
JavaScript 2.9 MiB 32%
Fonts 653.8 KiB 7%
Other 524.0 KiB 6%
HTML 68.3 KiB 1%
Other 60.8 KiB 1%
Other 57.3 KiB 1%
CSS 47.7 KiB 1%
Other 847 B 0%
Other 0 B 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

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 (9.0 MiB of 9.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
4227ms total JS execution
FIX
4227ms total JS execution
Warning::
https://cursor.com/marketing-static/_next/static/c...: 1374ms CPU time
Warning::
https://cursor.com/: 892ms CPU time
Warning::
https://cursor.com/marketing-static/_next/static/c...: 600ms CPU time
Warning::
Unattributable: 395ms CPU time
Warning::
https://cursor.com/marketing-static/_next/static/c...: 283ms CPU time
Warning::
Third-party scripts: 4227ms (100% of total)

Main Thread Breakdown

Script Evaluation 46% Other 24% Style & Layout 14% Script Parsing & Compilation 9% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://cursor.com/marketing-static/_next/static/chunks/0wctz3hel4v8f.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf1374ms1048ms6ms3rd
https://cursor.com/892ms33ms13ms3rd
https://cursor.com/marketing-static/_next/static/chunks/0-l9-.9ymblrk.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf600ms124ms6ms3rd
Unattributable395ms24ms0ms3rd
https://cursor.com/marketing-static/_next/static/chunks/0m7n79wrn9oni.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf283ms187ms8ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-M2R7938W177ms140ms29ms3rd
https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js114ms95ms19ms3rd
https://cursor.com/marketing-static/_next/static/chunks/06zu7_6mbt6a1.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf90ms82ms2ms3rd
https://cursor.com/marketing-static/_next/static/chunks/turbopack-0botq3dh3.idq.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf87ms86ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-5H6JBHFD7Z&cx=c&gtm=4e646080ms67ms12ms3rd

Showing top 10 of 12 scripts

F
JS Bundles
Action
101 scripts, 1.3 MB unused
FIX
101 scripts, 1.3 MB unused
Warning::
https://cursor.com/marketing-static/_next/static/c...: 346 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cursor.com/marketing-static/_next/static/c...: 217 KB unused (91%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cursor.com/marketing-static/_next/static/c...: 138 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cursor.com/marketing-static/_next/static/c...: 67 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-5H6J...: 64 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.3 MB
1315 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cursor.com/marketing-static/_next/static/chunks/0bp101vfbkqyt.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf347 KB346 KB (100%)✓3rd
https://cursor.com/marketing-static/_next/static/chunks/144xc~5r_u5ld.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf239 KB217 KB (91%)✓3rd
https://cursor.com/marketing-static/_next/static/chunks/09u86nqvkwgzd.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf178 KB138 KB (78%)✓3rd
https://cursor.com/marketing-static/_next/static/chunks/168zo1p2ggt.t.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf68 KB67 KB (100%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-5H6JBHFD7Z&cx=c&gtm=4e6460157 KB64 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-M2R7938W125 KB61 KB (49%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-17332771332144 KB60 KB (42%)✓3rd
https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js110 KB57 KB (52%)✓3rd
https://cursor.com/marketing-static/_next/static/chunks/07_w3cvatbjme.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf49 KB48 KB (99%)✓3rd
https://cursor.com/marketing-static/_next/static/chunks/0tspfn~2g8ciu.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf44 KB43 KB (100%)✓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

B
Image Optimization
29 images, 0 KB saveable
REVIEW
29 images, 0 KB saveable
Info::
All images are well-optimized
29 images 4.8 MB
0 oversized -0 KB
18 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::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
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+
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
19 fonts (654 KB)
PASS
19 fonts (654 KB)
Info::
19 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

19

654 KB total

Render-blocking

0

of 19

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 2.5 s FCP 1.1 s LCP 2.4 shttps://cursor.com/marketing-static/_next/static/media/1112828ec2c13661-s.p.17_qw44._rch-.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf1112828ec2c13661-s.p.17... https://cursor.com/marketing-static/_next/static/media/1112828ec2c13661-s.p.17_qw44._rch-.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 14.8 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/345c85a432359eed-s.p.0az0.9544w3d6.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf345c85a432359eed-s.p.0a... https://cursor.com/marketing-static/_next/static/media/345c85a432359eed-s.p.0az0.9544w3d6.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 14.1 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/6a9fa677ec1bbd33-s.p.0b-vepe81ylt2.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf6a9fa677ec1bbd33-s.p.0b... https://cursor.com/marketing-static/_next/static/media/6a9fa677ec1bbd33-s.p.0b-vepe81ylt2.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 14.8 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/80dbc432bf467303-s.p.0ucnnm22nbe4-.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf80dbc432bf467303-s.p.0u... https://cursor.com/marketing-static/_next/static/media/80dbc432bf467303-s.p.0ucnnm22nbe4-.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 13.3 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/84a2306e77cafc81-s.p.07ukck2wwk475.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf84a2306e77cafc81-s.p.07... https://cursor.com/marketing-static/_next/static/media/84a2306e77cafc81-s.p.07ukck2wwk475.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 14.4 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/8e451580e5e95631-s.p.0put2--9ix-3p.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf8e451580e5e95631-s.p.0p... https://cursor.com/marketing-static/_next/static/media/8e451580e5e95631-s.p.0put2--9ix-3p.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 13.9 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/9be384ea93fe3f49-s.p.05qlfybzfat._.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf9be384ea93fe3f49-s.p.05... https://cursor.com/marketing-static/_next/static/media/9be384ea93fe3f49-s.p.05qlfybzfat._.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 13.7 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/BerkeleyMono_Oblique.p.0ljxuk9ar7~k_.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfBerkeleyMono_Oblique.p.... https://cursor.com/marketing-static/_next/static/media/BerkeleyMono_Oblique.p.0ljxuk9ar7~k_.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 25.2 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/BerkeleyMono_Regular.p.0x~g-6.~uijej.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfBerkeleyMono_Regular.p.... https://cursor.com/marketing-static/_next/static/media/BerkeleyMono_Regular.p.0x~g-6.~uijej.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 23.8 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/CursorGothic_Bold-s.p.15hkw~ebmtjvr.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfCursorGothic_Bold-s.p.1... https://cursor.com/marketing-static/_next/static/media/CursorGothic_Bold-s.p.15hkw~ebmtjvr.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 48.6 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/CursorGothic_BoldItalic-s.p.0cqzqaem~_s9y.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfCursorGothic_BoldItalic... https://cursor.com/marketing-static/_next/static/media/CursorGothic_BoldItalic-s.p.0cqzqaem~_s9y.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 51.3 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/CursorGothic_Italic-s.p.0klm.ze1la4ej.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfCursorGothic_Italic-s.p... https://cursor.com/marketing-static/_next/static/media/CursorGothic_Italic-s.p.0klm.ze1la4ej.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 47.9 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/CursorGothic_Regular-s.p.05-84umc_47y9.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfCursorGothic_Regular-s.... https://cursor.com/marketing-static/_next/static/media/CursorGothic_Regular-s.p.05-84umc_47y9.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 44.7 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/a523ad25754b11ff-s.p.07ej8ox7wb60j.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfa523ad25754b11ff-s.p.07... https://cursor.com/marketing-static/_next/static/media/a523ad25754b11ff-s.p.07ej8ox7wb60j.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 14.1 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/ac372c80b3e400a1-s.p.00d4mwnv9pnmj.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfac372c80b3e400a1-s.p.00... https://cursor.com/marketing-static/_next/static/media/ac372c80b3e400a1-s.p.00d4mwnv9pnmj.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 14.7 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/f30fd2e485acf1bc-s.p.0_qs2mjxez25z.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAff30fd2e485acf1bc-s.p.0_... https://cursor.com/marketing-static/_next/static/media/f30fd2e485acf1bc-s.p.0_qs2mjxez25z.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 13.9 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/JJannon_Book.18d314o_76u73.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfJJannon_Book.18d314o_76... https://cursor.com/marketing-static/_next/static/media/JJannon_Book.18d314o_76u73.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 77.7 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/_next/static/media/JJannon_Book_Italic.0r-m5cwxthe5i.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAfJJannon_Book_Italic.0r-... https://cursor.com/marketing-static/_next/static/media/JJannon_Book_Italic.0r-m5cwxthe5i.woff2?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf — 105.8 KiB — 0 ms — font-display: swaphttps://cursor.com/marketing-static/fonts/cursor-icons-16.woff2cursor-icons-16.woff2 https://cursor.com/marketing-static/fonts/cursor-icons-16.woff2 — 87.3 KiB — 0 ms — font-display: swap
1112828ec2c13661-s.p.17... woff2 swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
345c85a432359eed-s.p.0a... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
6a9fa677ec1bbd33-s.p.0b... woff2 swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
80dbc432bf467303-s.p.0u... woff2 swap
Size 13 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
84a2306e77cafc81-s.p.07... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
8e451580e5e95631-s.p.0p... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
9be384ea93fe3f49-s.p.05... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BerkeleyMono_Oblique.p.... woff2 swap
Size 25 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BerkeleyMono_Regular.p.... woff2 swap
Size 24 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
CursorGothic_Bold-s.p.1... woff2 swap
Size 49 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
CursorGothic_BoldItalic... woff2 swap
Size 51 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
CursorGothic_Italic-s.p... woff2 swap
Size 48 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
CursorGothic_Regular-s.... woff2 swap
Size 45 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
a523ad25754b11ff-s.p.07... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ac372c80b3e400a1-s.p.00... woff2 swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
f30fd2e485acf1bc-s.p.0_... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
JJannon_Book.18d314o_76... woff2 swap
Size 78 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
JJannon_Book_Italic.0r-... woff2 swap
Size 106 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
cursor-icons-16.woff2 woff2 swap
Size 87 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 ~53 KB and ~106 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
234 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 4227ms · 829KB · $73/mo
cursor.com
Other
Costly
Execution 1374ms
Transfer 71 KB
Unused 33%
Monthly Cost $24/mo
cursor.com
Other
Costly
Execution 892ms
Transfer 68 KB
Monthly Cost $15/mo
cursor.com
Other
Costly
Execution 600ms
Transfer 49 KB
Monthly Cost $10/mo
Unattributable
Other
Costly
Execution 395ms
Transfer 0 KB
Monthly Cost $7/mo
cursor.com
Other
Costly
Execution 283ms
Transfer 37 KB
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Optional
Execution 177ms
Transfer 125 KB
Unused 49%
Monthly Cost $3/mo
analytics.tiktok.com
Other
Optional
Execution 114ms
Transfer 110 KB
Unused 52%
Monthly Cost $2/mo
cursor.com
Other
Optional
Execution 90ms
Transfer 10 KB
Monthly Cost $2/mo
cursor.com
Other
Optional
Execution 87ms
Transfer 5 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 80ms
Transfer 157 KB
Unused 41%
Monthly Cost $1/mo
cursor.com
Other
Optional
Execution 71ms
Transfer 187 KB
Monthly Cost $1/mo
0ay7zb.cursor.com
Other
Optional
Execution 64ms
Transfer 11 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • cursor.com adds 1374ms and costs ~$24/month
  • cursor.com adds 892ms and costs ~$15/month
  • cursor.com adds 600ms and costs ~$10/month
  • Unattributable adds 395ms and costs ~$7/month
  • cursor.com adds 283ms and costs ~$5/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

cursor.com takes 1374ms 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

cursor.com takes 892ms 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

cursor.com takes 600ms 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 395ms 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

cursor.com takes 283ms 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

52% of analytics.tiktok.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.

Send Feedback