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https://www.laposte.fr

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
4
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
29
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
71
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
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.

12.37 s

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

19.38 s

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

1.61 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.

12.37 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.

19.39 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
16
8 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
2.8 MB transferred, 110 requests
FIX
2.8 MB transferred, 110 requests
Warning::
Page weighs 9.4 MB (2.8 MB transferred)
Warning::
JavaScript is 2.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.1 MB
Info::
Fonts are 242 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 242 KB
Warning::
110 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.59 g CO2 per page load
2.8 MB / 2.4 MB budget
2.8 MB transferred
110 requests
0.59 g CO2 per page load
JavaScript 2.1 MiB 77%
Fonts 241.8 KiB 8%
Images 188.1 KiB 7%
CSS 149.8 KiB 5%
HTML 59.7 KiB 2%
Other 13.8 KiB 0%
Other 10.3 KiB 0%
Other 6.3 KiB 0%
Other 857 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

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

F
JS Execution Cost
Action
7262ms total JS execution
FIX
7262ms total JS execution
Warning::
Unattributable: 1655ms CPU time
Warning::
https://www.laposte.fr/ecom/_nuxt/c0a16e9.modern.j...: 1455ms CPU time
Warning::
https://www.laposte.fr/ecom/_nuxt/f17692a.modern.j...: 1068ms CPU time
Warning::
https://www.laposte.fr/ruxitagentjs_ICA7NVfhqrux_1...: 942ms CPU time
Warning::
https://www.laposte.fr/: 592ms CPU time
Info::
Third-party scripts: 2867ms (39% of total)

Main Thread Breakdown

Script Evaluation 53% Other 26% Style & Layout 10% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
Unattributable1655ms119ms0ms3rd
https://www.laposte.fr/ecom/_nuxt/c0a16e9.modern.js1455ms1074ms3ms1st
https://www.laposte.fr/ecom/_nuxt/f17692a.modern.js1068ms943ms0ms1st
https://www.laposte.fr/ruxitagentjs_ICA7NVfhqrux_10333260303165926.js942ms859ms27ms1st
https://www.laposte.fr/592ms33ms47ms1st
https://www.laposte.fr/ecom/_nuxt/e1f0dc9.modern.js338ms55ms6ms1st
https://try.abtasty.com/5714a31785e8fb2356ca3d1bd25e4a43/main.1e0116ad91cee0a97856.js283ms223ms52ms3rd
https://cdn.trustcommander.net/privacy/1491/privacy_v2_67.js202ms61ms16ms3rd
https://cdn.tagcommander.com/1491/tc_LaboutiqueLaPoste_21.js181ms125ms53ms3rd
https://try.abtasty.com/shared/analytics.6c9b51bdfcbabb565f02.js139ms42ms3ms3rd

Showing top 10 of 15 scripts

F
JS Bundles
Action
53 scripts, 1.1 MB unused
FIX
53 scripts, 1.1 MB unused
Warning::
https://www.laposte.fr/ecom/_nuxt/e1f0dc9.modern.j...: 441 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.laposte.fr/ecom/_nuxt/ace3671.modern.j...: 140 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.laposte.fr/ecom/_nuxt/9aeea0a.modern.j...: 127 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.laposte.fr/ecom/_nuxt/c0a16e9.modern.j...: 87 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.laposte.fr/ecom/_nuxt/ca3c383.modern.j...: 57 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.1 MB
1151 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.laposte.fr/ecom/_nuxt/e1f0dc9.modern.js554 KB441 KB (80%)✓1st
https://www.laposte.fr/ecom/_nuxt/ace3671.modern.js193 KB140 KB (73%)✓1st
https://www.laposte.fr/ecom/_nuxt/9aeea0a.modern.js127 KB127 KB (100%)✓1st
https://www.laposte.fr/ecom/_nuxt/c0a16e9.modern.js165 KB87 KB (53%)✓1st
https://www.laposte.fr/ecom/_nuxt/ca3c383.modern.js76 KB57 KB (76%)✓1st
https://cdn.tagcommander.com/1491/tc_LaboutiqueLaPoste_21.js80 KB45 KB (57%)✓3rd
https://try.abtasty.com/5714a31785e8fb2356ca3d1bd25e4a43/main.1e0116ad91cee0a97856.js105 KB40 KB (38%)✓3rd
https://www.laposte.fr/ecom/_nuxt/5130bf2.modern.js90 KB37 KB (41%)✓1st
https://www.laposte.fr/ecom/_nuxt/678a774.modern.js49 KB36 KB (75%)✓1st
https://www.laposte.fr/ecom/_nuxt/dc72e0b.modern.js49 KB35 KB (71%)✓1st

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
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: max-age=0, no-cache, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, no-cache, no-store

DirectiveValueMeaning
max-age0Cache for 0 seconds
no-cache—Cache but always revalidate first
no-store—Never cache this response
B
Image Optimization
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Info::
All images are well-optimized
28 images 188 KB
0 oversized -0 KB
10 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

A+
Third-Party Impact
14% third-party, 0 ms blocking
PASS
14% third-party, 0 ms blocking
Info::
Third-party code accounts for 14% of page weight (410.9 KiB of 2.8 MiB)
Info::
Third-party blocking time is low (0 ms)
86%
First-party Third-party
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
10 fonts (242 KB)
PASS
10 fonts (242 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

242 KB total

Render-blocking

0

of 10

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 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s FCP 12.4 s LCP 19.4 shttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Bold.3315de59.woff2Montserrat-Bold.3315de5... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Bold.3315de59.woff2 — 25.8 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Light.6f9be861.woff2Montserrat-Light.6f9be8... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Light.6f9be861.woff2 — 25.9 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Medium.618bb800.woff2Montserrat-Medium.618bb... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Medium.618bb800.woff2 — 26.4 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Regular.96275b32.woff2Montserrat-Regular.9627... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Regular.96275b32.woff2 — 26.2 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Semi-Bold.de1701b1.woff2Montserrat-Semi-Bold.de... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Montserrat-Semi-Bold.de1701b1.woff2 — 25.2 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Roboto-Regular.6aeb1341.woff2Roboto-Regular.6aeb1341... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Roboto-Regular.6aeb1341.woff2 — 19.1 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Roboto-Bold.9321daa6.woff2Roboto-Bold.9321daa6.woff2 https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Roboto-Bold.9321daa6.woff2 — 18.7 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/laposte-regular.9ec6d683.woff2laposte-regular.9ec6d68... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/laposte-regular.9ec6d683.woff2 — 27.2 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/laposte-light.1556e79f.woff2laposte-light.1556e79f.... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/laposte-light.1556e79f.woff2 — 28.5 KiB — 0 ms — font-display: swaphttps://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Roboto-Medium.ae03171c.woff2Roboto-Medium.ae03171c.... https://www.laposte.fr/ecom/_nuxt/node_modules/@lpel/phoenix-front-libraries-solaris/dist/fonts/Roboto-Medium.ae03171c.woff2 — 19.0 KiB — 0 ms — font-display: swap
Montserrat-Bold.3315de5... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Montserrat-Light.6f9be8... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Montserrat-Medium.618bb... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Montserrat-Regular.9627... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Montserrat-Semi-Bold.de... woff2 swap
Size 25 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Regular.6aeb1341... woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Bold.9321daa6.woff2 woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
laposte-regular.9ec6d68... woff2 swap
Size 27 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
laposte-light.1556e79f.... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Medium.ae03171c.... woff2 swap
Size 19 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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
110 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
39% of JavaScript execution is third-party
First-party Third-party 2867ms · 351KB · €31/mo
Unattributable
Other
Costly
Execution 1655ms
Transfer 0 KB
Monthly Cost €18/mo
try.abtasty.com
Other
Costly
Execution 283ms
Transfer 105 KB
Unused 38%
Monthly Cost €3/mo
cdn.trustcommander.net
Other
Costly
Execution 202ms
Transfer 38 KB
Monthly Cost €2/mo
cdn.tagcommander.com
Other
Optional
Execution 181ms
Transfer 80 KB
Unused 57%
Monthly Cost €2/mo
try.abtasty.com
Other
Optional
Execution 139ms
Transfer 8 KB
Monthly Cost €2/mo
cdn.tagcommander.com
Other
Optional
Execution 110ms
Transfer 34 KB
Monthly Cost €1/mo
cdn.tagcommander.com
Other
Optional
Execution 92ms
Transfer 31 KB
Monthly Cost €1/mo
try.abtasty.com
Other
Optional
Execution 80ms
Transfer 11 KB
Monthly Cost €1/mo
cdn.tagcommander.com
Other
Optional
Execution 70ms
Transfer 41 KB
Monthly Cost €1/mo
try.abtasty.com
Other
Optional
Execution 55ms
Transfer 2 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 1655ms and costs ~€18/month
  • try.abtasty.com adds 283ms and costs ~€3/month
  • cdn.trustcommander.net adds 202ms and costs ~€2/month

Unattributable takes 1655ms 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

try.abtasty.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

cdn.trustcommander.net 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

57% of cdn.tagcommander.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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