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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
88
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.
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.

893 ms

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

1.64 s

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

163 ms

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

0.008

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

1.24 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.

3.49 s

Page Load Progression

570 ms
1.1 s
1.7 s
2.3 s
2.9 s
3.4 s
4.0 s
4.6 s
Checks
14
6 PASS 2 REVIEW 4 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 93 requests
FIX
2.5 MB transferred, 93 requests
Warning::
Page weighs 7.4 MB (2.5 MB transferred)
Warning::
JavaScript is 1.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.6 MB
Info::
93 HTTP requests
Info::
Estimated 0.53 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
93 requests
0.53 g CO2 per page load
JavaScript 1.6 MiB 62%
Images 728.8 KiB 28%
Other 179.9 KiB 7%
CSS 46.3 KiB 2%
HTML 33.2 KiB 1%
Other 4.0 KiB 0%
Other 472 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 (2.5 MiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
26 scripts, 1021 KB unused
FIX
26 scripts, 1021 KB unused
Warning::
https://mistral.ai/_next/static/chunks/0fqrfvj8lo9...: 264 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://mistral.ai/_next/static/chunks/0ixzxbrlwvk...: 180 KB unused (98%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://mistral.ai/_next/static/chunks/0498v922jg....: 130 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://mistral.ai/_next/static/chunks/0nafd8md.jk...: 91 KB unused (95%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.axept.io/sdk.js: 72 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1021 KB
1021 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://mistral.ai/_next/static/chunks/0fqrfvj8lo92e.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435275 KB264 KB (100%)✓3rd
https://mistral.ai/_next/static/chunks/0ixzxbrlwvkb_.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435186 KB180 KB (98%)✓3rd
https://mistral.ai/_next/static/chunks/0498v922jg.9a.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435133 KB130 KB (100%)✓3rd
https://mistral.ai/_next/static/chunks/0nafd8md.jk3n.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d36396365316639393931336235623030303866653466643597 KB91 KB (95%)✓3rd
https://static.axept.io/sdk.js182 KB72 KB (40%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-V0SRTQLQ82&cx=c&gtm=4e6460175 KB70 KB (40%)✓3rd
https://mistral.ai/_next/static/chunks/0jlp7q_dh8pdr.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435119 KB67 KB (57%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T8R6SXZ4126 KB63 KB (50%)✓3rd
https://mistral.ai/_next/static/chunks/14ar.s0-uvwx5.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d36396365316639393931336235623030303866653466643565 KB37 KB (59%)✓3rd
https://mistral.ai/_next/static/chunks/0jv_pm0_h6kja.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d36396365316639393931336235623030303866653466643528 KB26 KB (99%)✓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.

No Cache-Control header

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

B
Image Optimization
29 images, 0 KB saveable
REVIEW
29 images, 0 KB saveable
Info::
All images are well-optimized
29 images 729 KB
0 oversized -0 KB
8 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1893ms total JS execution
REVIEW
1893ms total JS execution
Warning::
https://mistral.ai/_next/static/chunks/0jlp7q_dh8p...: 441ms CPU time
Warning::
https://mistral.ai/_next/static/chunks/0ixzxbrlwvk...: 308ms CPU time
Warning::
https://mistral.ai/: 299ms CPU time
Info::
Unattributable: 240ms CPU time
Info::
https://static.axept.io/sdk.js: 219ms CPU time
Warning::
Third-party scripts: 1893ms (100% of total)

Main Thread Breakdown

Script Evaluation 44% Other 31% Script Parsing & Compilation 12% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://mistral.ai/_next/static/chunks/0jlp7q_dh8pdr.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435441ms336ms23ms3rd
https://mistral.ai/_next/static/chunks/0ixzxbrlwvkb_.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435308ms46ms28ms3rd
https://mistral.ai/299ms28ms23ms3rd
Unattributable240ms8ms0ms3rd
https://static.axept.io/sdk.js219ms192ms25ms3rd
https://mistral.ai/_next/static/chunks/08ury25dtt1uc.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d363963653166393939313362356230303038666534666435124ms74ms3ms3rd
https://www.googletagmanager.com/gtag/js?id=G-V0SRTQLQ82&cx=c&gtm=4e6460114ms91ms22ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T8R6SXZ484ms62ms21ms3rd
https://mistral.ai/_next/static/chunks/0~itrr-_l-xgq.js?dpl=b2bf46033d11dac4648370d82fb665d2efc659add62345e1f8b3b65f308b5b8d36396365316639393931336235623030303866653466643566ms20ms9ms3rd
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
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
93 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 1893ms · 901KB · €21/mo
mistral.ai
Other
Costly
Execution 441ms
Transfer 119 KB
Unused 57%
Monthly Cost €5/mo
mistral.ai
Other
Costly
Execution 308ms
Transfer 186 KB
Unused 98%
Monthly Cost €3/mo
mistral.ai
Other
Costly
Execution 299ms
Transfer 33 KB
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 240ms
Transfer 0 KB
Monthly Cost €3/mo
static.axept.io
Other
Costly
Execution 219ms
Transfer 182 KB
Unused 40%
Monthly Cost €2/mo
mistral.ai
Other
Optional
Execution 124ms
Transfer 39 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 114ms
Transfer 175 KB
Unused 40%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 84ms
Transfer 126 KB
Unused 50%
Monthly Cost €1/mo
mistral.ai
Other
Optional
Execution 66ms
Transfer 41 KB
Unused 54%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • mistral.ai adds 441ms and costs ~€5/month
  • mistral.ai adds 308ms and costs ~€3/month
  • mistral.ai adds 299ms and costs ~€3/month
  • Unattributable adds 240ms and costs ~€3/month
  • static.axept.io adds 219ms and costs ~€2/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

mistral.ai takes 441ms 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

57% of mistral.ai'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

mistral.ai takes 308ms 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

98% of mistral.ai'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

mistral.ai takes 299ms 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 240ms 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

static.axept.io takes 219ms 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

54% of mistral.ai'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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