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https://lu.ma

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
5
REVIEW
1
PASS
7
INFO
2

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

Mobile Desktop
90
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
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.

599 ms

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

1.50 s

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

182 ms

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

0.002

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

848 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.24 s

Page Load Progression

480 ms
961 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.4 s
3.8 s
Checks
15
7 PASS 1 REVIEW 5 FIX
F
Page Weight Budget
Action
3.1 MB transferred, 91 requests
FIX
3.1 MB transferred, 91 requests
Warning::
Page weighs 6.1 MB (3.1 MB transferred)
Warning::
JavaScript is 1.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.3 MB
Info::
91 HTTP requests
Info::
Estimated 0.65 g CO2 per page load
3.1 MB / 2.4 MB budget
3.1 MB transferred
91 requests
0.65 g CO2 per page load
Other 1.7 MiB 55%
JavaScript 1.3 MiB 42%
Fonts 71.3 KiB 2%
CSS 30.0 KiB 1%
HTML 10.1 KiB 0%
Other 2.1 KiB 0%
Other 1.1 KiB 0%
Other 799 B 0%
Other 0 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

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 (3.1 MiB of 3.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
76 scripts, 342 KB unused
FIX
76 scripts, 342 KB unused
Warning::
https://luma.com/_next/static/chunks/84813de5e629d...: 62 KB unused (93%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://luma.com/_next/static/chunks/ea127380585c5...: 52 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://luma.com/_next/static/chunks/b3719a52b3a52...: 45 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://luma.com/_next/static/chunks/21ed8889f3e1f...: 30 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://luma.com/_next/static/chunks/a8b7b97163f12...: 25 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 342 KB
342 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://luma.com/_next/static/chunks/84813de5e629d43f.js66 KB62 KB (93%)✓3rd
https://luma.com/_next/static/chunks/ea127380585c5092.js68 KB52 KB (81%)✓3rd
https://luma.com/_next/static/chunks/b3719a52b3a527e2.js46 KB45 KB (99%)✓3rd
https://luma.com/_next/static/chunks/21ed8889f3e1f0e6.js46 KB30 KB (66%)✓3rd
https://luma.com/_next/static/chunks/a8b7b97163f1207b.js25 KB25 KB (99%)✓3rd
https://luma.com/_next/static/chunks/fcdd5b80f9b2b34c.js47 KB23 KB (50%)✓3rd
https://luma.com/_next/static/chunks/18e7943844d83a7c.js24 KB22 KB (92%)✓3rd
https://luma.com/_next/static/chunks/370232465324561a.js23 KB22 KB (95%)✓3rd
https://luma.com/_next/static/chunks/202a07b052788dd9.js56 KB21 KB (37%)✓3rd
https://luma.com/_next/static/chunks/3dbead1a4f884a47.js23 KB20 KB (90%)✓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

D
Page Weight Inventory
Action
91 resources · 3.1 MB · 342 KB savings available
FIX
91 resources · 3.1 MB · 342 KB savings available
Warning::
Page weight 2.1 MB over 1MB target
Got: 3.1 MB Expected: ≤ 1 MB
Info::
~342 KB of savings available
Warning::
90 third-party resources (100% of weight)
Info::
2 resources over 200KB
91 resources · 3.1 MiB · 90 third-party 2.1 MiB over 1MB target
Media 55% · 1.7 MiB
JavaScript 42% · 1.3 MiB
Font 2% · 71.3 KiB
CSS 1% · 30.0 KiB
Document 0% · 10.1 KiB
Other 0% · 2.0 KiB
Image 0% · 1.2 KiB

~342.3 KiB of savings available

Remove unused JavaScript: 342.3 KiB
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.

B
JS Execution Cost
850ms total JS execution
REVIEW
850ms total JS execution
Warning::
Unattributable: 307ms CPU time
Info::
https://luma.com/: 202ms CPU time
Info::
https://luma.com/_next/static/chunks/turbopack-dc9...: 197ms CPU time
Info::
https://luma.com/_next/static/chunks/3702324653245...: 72ms CPU time
Info::
https://luma.com/_next/static/chunks/202a07b052788...: 72ms CPU time
Warning::
Third-party scripts: 850ms (100% of total)

Main Thread Breakdown

Other 42% Script Evaluation 39% Script Parsing & Compilation 12% Style & Layout 6%
ScriptTotalScriptingParse/CompileParty
Unattributable307ms7ms0ms3rd
https://luma.com/202ms2ms1ms3rd
https://luma.com/_next/static/chunks/turbopack-dc918285c20ca77d.js197ms196ms0ms3rd
https://luma.com/_next/static/chunks/370232465324561a.js72ms69ms2ms3rd
https://luma.com/_next/static/chunks/202a07b052788dd9.js72ms65ms3ms3rd
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
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (71 KB)
PASS
1 fonts (71 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

71 KB total

Render-blocking

0

of 1

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 FCP 599 ms LCP 1.5 shttps://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2UcCo3FwrK3iLTcviYwYZ8UA... https://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2 — 71.3 KiB — 73 ms — font-display: swap
UcCo3FwrK3iLTcviYwYZ8UA... woff2 swap
Size 71 KB
Load time 73 ms
Start 1.1 s
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
91 requests over 1370ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 599 ms LCP 1.5 shttps://lu.ma// https://lu.ma/ — 301 — 109 B — 57 ms — h2https://luma.com/luma.com/ https://luma.com/ — 200 — 10.1 KiB — 239 ms — h2https://luma.com/_next/static/chunks/cb09804cf3a08c03.cssluma.com/_next/static/chunks/cb0980... https://luma.com/_next/static/chunks/cb09804cf3a08c03.css — 200 — 28.8 KiB — 30 ms — h2https://luma.com/_next/static/chunks/84ec63c45eb13141.jsluma.com/_next/static/chunks/84ec63... https://luma.com/_next/static/chunks/84ec63c45eb13141.js — 200 — 12.4 KiB — 29 ms — h2https://luma.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.jsluma.com/cdn-cgi/scripts/5c5dd728/c... https://luma.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js — 200 — 764 B — 20 ms — h2https://luma.com/_next/static/chunks/831c020b02bf9fcc.jsluma.com/_next/static/chunks/831c02... https://luma.com/_next/static/chunks/831c020b02bf9fcc.js — 200 — 12.2 KiB — 44 ms — h2https://luma.com/_next/static/chunks/aa447e4720c05522.jsluma.com/_next/static/chunks/aa447e... https://luma.com/_next/static/chunks/aa447e4720c05522.js — 200 — 13.7 KiB — 43 ms — h2https://luma.com/_next/static/chunks/c5f0fe2bb81a8474.jsluma.com/_next/static/chunks/c5f0fe... https://luma.com/_next/static/chunks/c5f0fe2bb81a8474.js — 200 — 12.7 KiB — 47 ms — h2https://luma.com/_next/static/chunks/d58f3b7ce4d6c62f.jsluma.com/_next/static/chunks/d58f3b... https://luma.com/_next/static/chunks/d58f3b7ce4d6c62f.js — 200 — 8.7 KiB — 45 ms — h2https://luma.com/_next/static/chunks/ae9775302741496e.jsluma.com/_next/static/chunks/ae9775... https://luma.com/_next/static/chunks/ae9775302741496e.js — 200 — 19.7 KiB — 48 ms — h2https://luma.com/_next/static/chunks/4e46a48761e32cb9.jsluma.com/_next/static/chunks/4e46a4... https://luma.com/_next/static/chunks/4e46a48761e32cb9.js — 200 — 46.9 KiB — 97 ms — h2https://luma.com/_next/static/chunks/583bcf12c62ab7e2.jsluma.com/_next/static/chunks/583bcf... https://luma.com/_next/static/chunks/583bcf12c62ab7e2.js — 200 — 17.1 KiB — 118 ms — h2https://luma.com/_next/static/chunks/3102934ad836f69b.jsluma.com/_next/static/chunks/310293... https://luma.com/_next/static/chunks/3102934ad836f69b.js — 200 — 11.9 KiB — 119 ms — h2https://luma.com/_next/static/chunks/24c10ae5ec4ce7a8.jsluma.com/_next/static/chunks/24c10a... https://luma.com/_next/static/chunks/24c10ae5ec4ce7a8.js — 200 — 12.2 KiB — 119 ms — h2https://luma.com/_next/static/chunks/7ad383828e1eb88d.jsluma.com/_next/static/chunks/7ad383... https://luma.com/_next/static/chunks/7ad383828e1eb88d.js — 200 — 7.2 KiB — 119 ms — h2https://luma.com/_next/static/chunks/1cb6f1ab6102114c.jsluma.com/_next/static/chunks/1cb6f1... https://luma.com/_next/static/chunks/1cb6f1ab6102114c.js — 200 — 16.9 KiB — 120 ms — h2https://luma.com/_next/static/chunks/e05284e563166cae.jsluma.com/_next/static/chunks/e05284... https://luma.com/_next/static/chunks/e05284e563166cae.js — 200 — 23.4 KiB — 122 ms — h2https://luma.com/_next/static/chunks/21ed8889f3e1f0e6.jsluma.com/_next/static/chunks/21ed88... https://luma.com/_next/static/chunks/21ed8889f3e1f0e6.js — 200 — 46.1 KiB — 125 ms — h2https://luma.com/_next/static/chunks/fcdd5b80f9b2b34c.jsluma.com/_next/static/chunks/fcdd5b... https://luma.com/_next/static/chunks/fcdd5b80f9b2b34c.js — 200 — 47.2 KiB — 124 ms — h2https://luma.com/_next/static/chunks/202a07b052788dd9.jsluma.com/_next/static/chunks/202a07... https://luma.com/_next/static/chunks/202a07b052788dd9.js — 200 — 56.5 KiB — 125 ms — h2https://luma.com/_next/static/chunks/c79a621157166b82.jsluma.com/_next/static/chunks/c79a62... https://luma.com/_next/static/chunks/c79a621157166b82.js — 200 — 51.2 KiB — 128 ms — h2https://luma.com/_next/static/chunks/514139c3a7382bf9.jsluma.com/_next/static/chunks/514139... https://luma.com/_next/static/chunks/514139c3a7382bf9.js — 200 — 21.1 KiB — 125 ms — h2https://luma.com/_next/static/chunks/3f9dbf854161a846.jsluma.com/_next/static/chunks/3f9dbf... https://luma.com/_next/static/chunks/3f9dbf854161a846.js — 200 — 16.7 KiB — 125 ms — h2https://luma.com/_next/static/chunks/93056d1a55b0f06a.jsluma.com/_next/static/chunks/93056d... https://luma.com/_next/static/chunks/93056d1a55b0f06a.js — 200 — 19.9 KiB — 126 ms — h2https://luma.com/_next/static/chunks/766d7b6e60ffc9e1.jsluma.com/_next/static/chunks/766d7b... https://luma.com/_next/static/chunks/766d7b6e60ffc9e1.js — 200 — 13.8 KiB — 125 ms — h2https://luma.com/_next/static/chunks/ea127380585c5092.jsluma.com/_next/static/chunks/ea1273... https://luma.com/_next/static/chunks/ea127380585c5092.js — 200 — 68.0 KiB — 139 ms — h2https://luma.com/_next/static/chunks/3128540d9cefd3d5.jsluma.com/_next/static/chunks/312854... https://luma.com/_next/static/chunks/3128540d9cefd3d5.js — 200 — 10.6 KiB — 125 ms — h2https://luma.com/_next/static/chunks/6a6a0c03cdec7b06.jsluma.com/_next/static/chunks/6a6a0c... https://luma.com/_next/static/chunks/6a6a0c03cdec7b06.js — 200 — 14.5 KiB — 125 ms — h2https://luma.com/_next/static/chunks/turbopack-dc918285c20ca77d.jsluma.com/_next/static/chunks/turbop... https://luma.com/_next/static/chunks/turbopack-dc918285c20ca77d.js — 200 — 4.8 KiB — 126 ms — h2https://luma.com/_next/static/chunks/17120d586038196d.jsluma.com/_next/static/chunks/17120d... https://luma.com/_next/static/chunks/17120d586038196d.js — 200 — 12.2 KiB — 126 ms — h2
0 ms 500 ms 1.0 s 1.5 s FCP 599 ms LCP 1.5 shttps://lu.ma// https://lu.ma/ — 301 — 109 B — 57 ms — h2https://luma.com/luma.com/ https://luma.com/ — 200 — 10.1 KiB — 239 ms — h2https://luma.com/_next/static/chunks/cb09804cf3a08c03.cssluma.com/_next/static/chunks/cb0980... https://luma.com/_next/static/chunks/cb09804cf3a08c03.css — 200 — 28.8 KiB — 30 ms — h2https://luma.com/_next/static/chunks/84ec63c45eb13141.jsluma.com/_next/static/chunks/84ec63... https://luma.com/_next/static/chunks/84ec63c45eb13141.js — 200 — 12.4 KiB — 29 ms — h2https://luma.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.jsluma.com/cdn-cgi/scripts/5c5dd728/c... https://luma.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js — 200 — 764 B — 20 ms — h2https://luma.com/_next/static/chunks/831c020b02bf9fcc.jsluma.com/_next/static/chunks/831c02... https://luma.com/_next/static/chunks/831c020b02bf9fcc.js — 200 — 12.2 KiB — 44 ms — h2https://luma.com/_next/static/chunks/aa447e4720c05522.jsluma.com/_next/static/chunks/aa447e... https://luma.com/_next/static/chunks/aa447e4720c05522.js — 200 — 13.7 KiB — 43 ms — h2https://luma.com/_next/static/chunks/c5f0fe2bb81a8474.jsluma.com/_next/static/chunks/c5f0fe... https://luma.com/_next/static/chunks/c5f0fe2bb81a8474.js — 200 — 12.7 KiB — 47 ms — h2https://luma.com/_next/static/chunks/d58f3b7ce4d6c62f.jsluma.com/_next/static/chunks/d58f3b... https://luma.com/_next/static/chunks/d58f3b7ce4d6c62f.js — 200 — 8.7 KiB — 45 ms — h2https://luma.com/_next/static/chunks/ae9775302741496e.jsluma.com/_next/static/chunks/ae9775... https://luma.com/_next/static/chunks/ae9775302741496e.js — 200 — 19.7 KiB — 48 ms — h2https://luma.com/_next/static/chunks/4e46a48761e32cb9.jsluma.com/_next/static/chunks/4e46a4... https://luma.com/_next/static/chunks/4e46a48761e32cb9.js — 200 — 46.9 KiB — 97 ms — h2https://luma.com/_next/static/chunks/583bcf12c62ab7e2.jsluma.com/_next/static/chunks/583bcf... https://luma.com/_next/static/chunks/583bcf12c62ab7e2.js — 200 — 17.1 KiB — 118 ms — h2https://luma.com/_next/static/chunks/3102934ad836f69b.jsluma.com/_next/static/chunks/310293... https://luma.com/_next/static/chunks/3102934ad836f69b.js — 200 — 11.9 KiB — 119 ms — h2https://luma.com/_next/static/chunks/24c10ae5ec4ce7a8.jsluma.com/_next/static/chunks/24c10a... https://luma.com/_next/static/chunks/24c10ae5ec4ce7a8.js — 200 — 12.2 KiB — 119 ms — h2https://luma.com/_next/static/chunks/7ad383828e1eb88d.jsluma.com/_next/static/chunks/7ad383... https://luma.com/_next/static/chunks/7ad383828e1eb88d.js — 200 — 7.2 KiB — 119 ms — h2https://luma.com/_next/static/chunks/1cb6f1ab6102114c.jsluma.com/_next/static/chunks/1cb6f1... https://luma.com/_next/static/chunks/1cb6f1ab6102114c.js — 200 — 16.9 KiB — 120 ms — h2https://luma.com/_next/static/chunks/e05284e563166cae.jsluma.com/_next/static/chunks/e05284... https://luma.com/_next/static/chunks/e05284e563166cae.js — 200 — 23.4 KiB — 122 ms — h2https://luma.com/_next/static/chunks/21ed8889f3e1f0e6.jsluma.com/_next/static/chunks/21ed88... https://luma.com/_next/static/chunks/21ed8889f3e1f0e6.js — 200 — 46.1 KiB — 125 ms — h2https://luma.com/_next/static/chunks/fcdd5b80f9b2b34c.jsluma.com/_next/static/chunks/fcdd5b... https://luma.com/_next/static/chunks/fcdd5b80f9b2b34c.js — 200 — 47.2 KiB — 124 ms — h2https://luma.com/_next/static/chunks/202a07b052788dd9.jsluma.com/_next/static/chunks/202a07... https://luma.com/_next/static/chunks/202a07b052788dd9.js — 200 — 56.5 KiB — 125 ms — h2https://luma.com/_next/static/chunks/c79a621157166b82.jsluma.com/_next/static/chunks/c79a62... https://luma.com/_next/static/chunks/c79a621157166b82.js — 200 — 51.2 KiB — 128 ms — h2https://luma.com/_next/static/chunks/514139c3a7382bf9.jsluma.com/_next/static/chunks/514139... https://luma.com/_next/static/chunks/514139c3a7382bf9.js — 200 — 21.1 KiB — 125 ms — h2https://luma.com/_next/static/chunks/3f9dbf854161a846.jsluma.com/_next/static/chunks/3f9dbf... https://luma.com/_next/static/chunks/3f9dbf854161a846.js — 200 — 16.7 KiB — 125 ms — h2https://luma.com/_next/static/chunks/93056d1a55b0f06a.jsluma.com/_next/static/chunks/93056d... https://luma.com/_next/static/chunks/93056d1a55b0f06a.js — 200 — 19.9 KiB — 126 ms — h2https://luma.com/_next/static/chunks/766d7b6e60ffc9e1.jsluma.com/_next/static/chunks/766d7b... https://luma.com/_next/static/chunks/766d7b6e60ffc9e1.js — 200 — 13.8 KiB — 125 ms — h2https://luma.com/_next/static/chunks/ea127380585c5092.jsluma.com/_next/static/chunks/ea1273... https://luma.com/_next/static/chunks/ea127380585c5092.js — 200 — 68.0 KiB — 139 ms — h2https://luma.com/_next/static/chunks/3128540d9cefd3d5.jsluma.com/_next/static/chunks/312854... https://luma.com/_next/static/chunks/3128540d9cefd3d5.js — 200 — 10.6 KiB — 125 ms — h2https://luma.com/_next/static/chunks/6a6a0c03cdec7b06.jsluma.com/_next/static/chunks/6a6a0c... https://luma.com/_next/static/chunks/6a6a0c03cdec7b06.js — 200 — 14.5 KiB — 125 ms — h2https://luma.com/_next/static/chunks/turbopack-dc918285c20ca77d.jsluma.com/_next/static/chunks/turbop... https://luma.com/_next/static/chunks/turbopack-dc918285c20ca77d.js — 200 — 4.8 KiB — 126 ms — h2https://luma.com/_next/static/chunks/17120d586038196d.jsluma.com/_next/static/chunks/17120d... https://luma.com/_next/static/chunks/17120d586038196d.js — 200 — 12.2 KiB — 126 ms — h2https://luma.com/_next/static/chunks/fb01cf2de3effa4e.jsluma.com/_next/static/chunks/fb01cf... https://luma.com/_next/static/chunks/fb01cf2de3effa4e.js — 200 — 9.6 KiB — 126 ms — h2https://luma.com/_next/static/chunks/be2aa644b90e11e7.jsluma.com/_next/static/chunks/be2aa6... https://luma.com/_next/static/chunks/be2aa644b90e11e7.js — 200 — 12.3 KiB — 126 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
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 850ms · 95KB · د.م.34/mo
Unattributable
Other
Costly
Execution 307ms
Transfer 0 KB
Monthly Cost د.م.12/mo
luma.com
Other
Costly
Execution 202ms
Transfer 10 KB
Monthly Cost د.م.8/mo
luma.com
Other
Optional
Execution 197ms
Transfer 5 KB
Monthly Cost د.م.8/mo
luma.com
Other
Optional
Execution 72ms
Transfer 23 KB
Unused 95%
Monthly Cost د.م.3/mo
luma.com
Other
Optional
Execution 72ms
Transfer 56 KB
Unused 37%
Monthly Cost د.م.3/mo

These scripts may cost more than they're worth

  • Unattributable adds 307ms and costs ~د.م.12/month
  • luma.com adds 202ms and costs ~د.م.8/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

Unattributable takes 307ms 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

luma.com takes 202ms 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

95% of luma.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.

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