Performance
· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.86 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.93 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.36 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.
6.93 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.
27.81 s
Page Load Progression
FPage Weight BudgetAction5.0 MB transferred, 151 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
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.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction11805ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cursor.com/marketing-static/_next/static/chunks/0wctz3hel4v8f.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 3944ms | 3199ms | 29ms | 3rd |
| https://cursor.com/ | 2531ms | 48ms | 46ms | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/0-l9-.9ymblrk.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 1455ms | 309ms | 20ms | 3rd |
| Unattributable | 880ms | 99ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-M2R7938W | 463ms | 418ms | 34ms | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/0ou~ysm2gqek5.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 298ms | 212ms | 48ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5H6JBHFD7Z&cx=c>m=4e6460h1 | 264ms | 222ms | 39ms | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js | 254ms | 195ms | 55ms | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/0m7n79wrn9oni.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 216ms | 136ms | 16ms | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/0ubj8n~1c_wkf.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 172ms | 168ms | 3ms | 3rd |
Showing top 10 of 24 scripts
FJS BundlesAction77 scripts, 1.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cursor.com/marketing-static/_next/static/chunks/0bp101vfbkqyt.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 347 KB | 346 KB (100%) | ✓ | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/144xc~5r_u5ld.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 239 KB | 217 KB (91%) | ✓ | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/09u86nqvkwgzd.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 178 KB | 138 KB (78%) | ✓ | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/168zo1p2ggt.t.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 68 KB | 67 KB (100%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5H6JBHFD7Z&cx=c>m=4e6460h1 | 157 KB | 64 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-M2R7938W | 125 KB | 62 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17332771332 | 144 KB | 60 KB (42%) | ✓ | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js | 110 KB | 57 KB (52%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 95 KB | 34 KB (35%) | ✓ | 3rd |
| https://cursor.com/marketing-static/_next/static/chunks/0tnf56p_s6kws.js?dpl=dpl_Dx4XNMJ79jwg3qihvhVN8PvjAvAf | 32 KB | 31 KB (100%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
BImage Optimization19 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading19 fonts (654 KB)PASS
Web fonts
19
654 KB total
Render-blocking
0
of 19
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints18 hints, 0 missing preconnectsPASS
Current Resource Hints
18 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall151 requests over 0msINFO
Performance analysis not available for this result.
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cursor.com cursor.com | Other | 3944ms | 71 KB | 33% | $68/mo | Costly |
cursor.com cursor.com | Other | 2531ms | 68 KB | — | $44/mo | Costly |
cursor.com cursor.com | Other | 1455ms | 49 KB | — | $25/mo | Costly |
Unattributable Unattributable | Other | 880ms | 0 KB | — | $15/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 463ms | 125 KB | 50% | $8/mo | Costly |
cursor.com cursor.com | Other | 298ms | 187 KB | — | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 264ms | 157 KB | 41% | $5/mo | Costly |
analytics.tiktok.com analytics.tiktok.com | Other | 254ms | 110 KB | 52% | $4/mo | Costly |
cursor.com cursor.com | Other | 216ms | 37 KB | — | $4/mo | Costly |
cursor.com cursor.com | Other | 172ms | 4 KB | — | $3/mo | Optional |
cursor.com cursor.com | Other | 163ms | 7 KB | — | $3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 136ms | 144 KB | 42% | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 130ms | 95 KB | 35% | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 111ms | 14 KB | — | $2/mo | Optional |
cursor.com cursor.com | Other | 103ms | 347 KB | 100% | $2/mo | Optional |
cursor.com cursor.com | Other | 99ms | 47 KB | — | $2/mo | Optional |
0ay7zb.cursor.com 0ay7zb.cursor.com | Other | 96ms | 11 KB | — | $2/mo | Optional |
cursor.com cursor.com | Other | 81ms | 6 KB | — | $1/mo | Optional |
cursor.com cursor.com | Other | 80ms | 31 KB | — | $1/mo | Optional |
cursor.com cursor.com | Other | 78ms | 178 KB | 78% | $1/mo | Optional |
cursor.com cursor.com | Other | 74ms | 239 KB | 91% | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 72ms | 37 KB | — | $1/mo | Optional |
cursor.com cursor.com | Other | 54ms | 5 KB | — | $1/mo | Optional |
cursor.com cursor.com | Other | 51ms | 32 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- cursor.com adds 3944ms and costs ~$68/month
- cursor.com adds 2531ms and costs ~$44/month
- cursor.com adds 1455ms and costs ~$25/month
- Unattributable adds 880ms and costs ~$15/month
- Google Tag Manager adds 463ms and costs ~$8/month
- cursor.com adds 298ms and costs ~$5/month
- Google Tag Manager adds 264ms and costs ~$5/month
- analytics.tiktok.com adds 254ms and costs ~$4/month
- cursor.com adds 216ms and costs ~$4/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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 3944ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cursor.com takes 2531ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cursor.com takes 1455ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 880ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 463ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cursor.com takes 298ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 264ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
analytics.tiktok.com takes 254ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
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.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
cursor.com takes 216ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
100% of cursor.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
78% of cursor.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
91% of cursor.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev