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

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
46
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
87
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.
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.

4.37 s

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

11.34 s

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

668 ms

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.

5.19 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.

13.80 s

Page Load Progression

547 ms
1.1 s
1.6 s
2.2 s
2.7 s
3.3 s
3.8 s
4.4 s
Checks
16
7 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
9.0 MB transferred, 63 requests
FIX
9.0 MB transferred, 63 requests
Critical::
Page weighs 13.1 MB (9.0 MB transferred)
Warning::
JavaScript is 899 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 899 KB
Info::
63 HTTP requests
Info::
Estimated 1.9 g CO2 per page load
9.0 MB / 2.4 MB budget
9.0 MB transferred
63 requests
1.9 g CO2 per page load
Other 7.1 MiB 79%
JavaScript 899.2 KiB 10%
Images 645.3 KiB 7%
Fonts 157.8 KiB 2%
HTML 112.9 KiB 1%
CSS 100.3 KiB 1%
Other 2.6 KiB 0%
Other 1.8 KiB 0%
Other 1.6 KiB 0%
Other 606 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
99% third-party, 0 ms blocking
FIX
99% third-party, 0 ms blocking
Warning::
Third-party code accounts for 99% of page weight (8.9 MiB of 9.0 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
F
JS Execution Cost
Action
3570ms total JS execution
FIX
3570ms total JS execution
Warning::
https://www.mapbox.com/: 688ms CPU time
Warning::
Unattributable: 557ms CPU time
Warning::
https://cdn.prod.website-files.com/6050a76fa6a633d...: 554ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-K0D3...: 391ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-166...: 364ms CPU time
Warning::
Third-party scripts: 2882ms (81% of total)

Main Thread Breakdown

Script Evaluation 45% Other 25% Style & Layout 12% Script Parsing & Compilation 10% Garbage Collection 3%
ScriptTotalScriptingParse/CompileParty
https://www.mapbox.com/688ms88ms22ms1st
Unattributable557ms19ms0ms3rd
https://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/js/www-mapbox.schunk.bc77267c561e1afa.js554ms149ms55ms3rd
https://www.googletagmanager.com/gtag/js?id=G-K0D3QK4GKE391ms274ms60ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-16617866687364ms271ms76ms3rd
https://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/js/www-mapbox.9747a68c.a3b83a682da0d636.js313ms287ms0ms3rd
https://cdn.weglot.com/weglot.min.js?api_key=wg_72541dd0c0e63359b4c7d5c8185e2e625275ms248ms24ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-16617866687&cx=c&gtm=4e6460101ms41ms52ms3rd
https://d3e54v103j8qbb.cloudfront.net/js/jquery-3.5.1.min.dc5e7f18c8.js?site=6050a76fa6a633d5d54ae71492ms68ms8ms3rd
https://cdn.prod.website-files.com/gsap/3.14.2/gsap.min.js63ms49ms7ms3rd

Showing top 10 of 13 scripts

D
JS Bundles
Action
24 scripts, 343 KB unused
FIX
24 scripts, 343 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-166...: 113 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-K0D3...: 68 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-166...: 60 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.jsdelivr.net/npm/swiper@12/swiper-bund...: 42 KB unused (97%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.weglot.com/weglot.min.js?api_key=wg_72...: 32 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 343 KB
343 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=AW-16617866687&cx=c&gtm=4e6460177 KB113 KB (64%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-K0D3QK4GKE176 KB68 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-16617866687177 KB60 KB (34%)✓3rd
https://cdn.jsdelivr.net/npm/swiper@12/swiper-bundle.min.js44 KB42 KB (97%)✓3rd
https://cdn.weglot.com/weglot.min.js?api_key=wg_72541dd0c0e63359b4c7d5c8185e2e62571 KB32 KB (46%)✓3rd
https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js37 KB28 KB (79%)✓3rd
https://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/js/www-mapbox.schunk.bc77267c561e1afa.js68 KB—✓3rd
https://cdn.prod.website-files.com/gsap/3.14.2/gsap.min.js29 KB—✓3rd
https://static-assets.mapbox.com/www/scripts/weglot/init.js1 KB—✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js0 KB—✓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

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.
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/6050a76fa6a633d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/6050a76fa6a633d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 645 KB
0 oversized -0 KB
6 legacy format
3 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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 (158 KB)
PASS
4 fonts (158 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

158 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 4.4 s LCP 11.3 shttps://fonts.gstatic.com/s/sourcecodepro/v31/HI_SiYsKILxRpg3hIP6sJ7fM7PqlPevWnsUnxg.woff2HI_SiYsKILxRpg3hIP6sJ7f... https://fonts.gstatic.com/s/sourcecodepro/v31/HI_SiYsKILxRpg3hIP6sJ7fM7PqlPevWnsUnxg.woff2 — 21.5 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/6050ab4346858de0e05420ae_Cera%20Pro%20Medium.woff26050ab4346858de0e05420a... https://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/6050ab4346858de0e05420ae_Cera%20Pro%20Medium.woff2 — 45.6 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/6050ab43f0e445b9ad810484_Cera%20Pro.woff26050ab43f0e445b9ad81048... https://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/6050ab43f0e445b9ad810484_Cera%20Pro.woff2 — 45.7 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/6050ab4338c9f1473d2527a2_Cera%20Pro%20Bold.woff26050ab4338c9f1473d2527a... https://cdn.prod.website-files.com/6050a76fa6a633d5d54ae714/6050ab4338c9f1473d2527a2_Cera%20Pro%20Bold.woff2 — 45.0 KiB — 0 ms — font-display: swap
HI_SiYsKILxRpg3hIP6sJ7f... woff2 swap
Size 21 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
6050ab4346858de0e05420a... woff2 swap
Size 46 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
6050ab43f0e445b9ad81048... woff2 swap
Size 46 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
6050ab4338c9f1473d2527a... woff2 swap
Size 45 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
2
preload
—
dns-prefetch
—
prefetch
—

2 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
63 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
81% of JavaScript execution is third-party
First-party Third-party 2882ms · 803KB · €50/mo
Unattributable
Other
Costly
Execution 557ms
Transfer 0 KB
Monthly Cost €10/mo
cdn.prod.website-files.com
Other
Costly
Execution 554ms
Transfer 68 KB
Monthly Cost €10/mo
Google Tag Manager
Tag Manager
Costly
Execution 391ms
Transfer 176 KB
Unused 39%
Monthly Cost €7/mo
Google Tag Manager
Tag Manager
Costly
Execution 364ms
Transfer 177 KB
Unused 34%
Monthly Cost €6/mo
cdn.prod.website-files.com
Other
Costly
Execution 313ms
Transfer 1 KB
Monthly Cost €5/mo
cdn.weglot.com
Other
Costly
Execution 275ms
Transfer 71 KB
Unused 46%
Monthly Cost €5/mo
Google Tag Manager
Tag Manager
Optional
Execution 101ms
Transfer 177 KB
Unused 64%
Monthly Cost €2/mo
d3e54v103j8qbb.cloudfront.net
Other
Optional
Execution 92ms
Transfer 31 KB
Monthly Cost €2/mo
cdn.prod.website-files.com
Other
Optional
Execution 63ms
Transfer 29 KB
Monthly Cost €1/mo
cdn.prod.website-files.com
Other
Optional
Execution 62ms
Transfer 18 KB
Monthly Cost €1/mo
cdnjs
CDN
Optional
Execution 56ms
Transfer 37 KB
Unused 79%
Monthly Cost €1/mo
LinkedIn Insight
Advertising
Optional
Execution 54ms
Transfer 19 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 557ms and costs ~€10/month
  • cdn.prod.website-files.com adds 554ms and costs ~€10/month
  • Google Tag Manager adds 391ms and costs ~€7/month
  • Google Tag Manager adds 364ms and costs ~€6/month
  • cdn.prod.website-files.com adds 313ms and costs ~€5/month
  • cdn.weglot.com adds 275ms and costs ~€5/month

81% 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 557ms 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

cdn.prod.website-files.com takes 554ms 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

Google Tag Manager takes 391ms 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

Google Tag Manager takes 364ms 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

cdn.prod.website-files.com takes 313ms 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

cdn.weglot.com takes 275ms 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

64% of Google Tag Manager'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

79% of cdnjs'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