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https://prestashop-project.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
2
REVIEW
2
PASS
9
INFO
2

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

97
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
98
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.

763 ms

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

900 ms

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

40 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.

1.50 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.

1.74 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
15
9 PASS 2 REVIEW 2 FIX
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 (709.6 KiB of 710.0 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0

DirectiveValueMeaning
privateOnly browser cache, not CDN/proxy
max-age0Cache for 0 seconds
no-storeNever cache this response
no-cacheCache but always revalidate first
must-revalidateMust recheck with server after expiry
post-check0
pre-check0
C
Image Optimization
Action
9 images, 0 KB saveable
REVIEW
9 images, 0 KB saveable
Warning::
https://www.prestashop-project.org/images/icon-use... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.prestashop-project.org/images/icon-dev... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.prestashop-project.org/images/download... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.prestashop-project.org/images/prestash... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.prestashop-project.org/images/home.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.prestashop-project.org/images/icon-spe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
9 images 242 KB
0 oversized -0 KB
7 legacy format
6 missing dimensions CLS risk

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

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

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

B
JS Bundles
2 scripts, 149 KB unused
REVIEW
2 scripts, 149 KB unused
Warning::
https://static.axept.io/sdk.js: 81 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MJ8...: 68 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 149 KB
149 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.axept.io/sdk.js203 KB81 KB (40%)3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MJ8XZ68L120 KB68 KB (57%)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

A
Page Weight Budget
710 KB transferred, 27 requests
PASS
710 KB transferred, 27 requests
Info::
Page weighs 1.7 MB (710 KB transferred)
Info::
27 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
710 KB / 2.4 MB budget
710 KB transferred
27 requests
0.15 g CO2 per page load
JavaScript 322.7 KiB 45%
Images 241.5 KiB 34%
HTML 55.2 KiB 8%
CSS 42.5 KiB 6%
Fonts 38.3 KiB 5%
Other 8.4 KiB 1%
Other 1.1 KiB 0%
Other 361 B 0%
0 2.4 MB 4.9 MB
Under budget
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+
JS Execution Cost
395ms total JS execution
PASS
395ms total JS execution
Info::
https://static.axept.io/sdk.js: 222ms CPU time
Info::
https://www.prestashop-project.org/: 102ms CPU time
Info::
Unattributable: 70ms CPU time
Warning::
Third-party scripts: 395ms (100% of total)

Main Thread Breakdown

Script Evaluation 54% Other 19% Style & Layout 12% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
https://static.axept.io/sdk.js222ms193ms22ms3rd
https://www.prestashop-project.org/102ms19ms12ms3rd
Unattributable70ms2ms0ms3rd
A+
Font Loading
1 fonts (38 KB)
PASS
1 fonts (38 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

38 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 FCP 763 ms LCP 900 mshttps://www.prestashop-project.org/fonts/Prestafont-Regular.woff2Prestafont-Regular.woff2 https://www.prestashop-project.org/fonts/Prestafont-Regular.woff2 — 38.3 KiB — 23 ms — font-display: swap
Prestafont-Regular.woff2 woff2 swap
Size 38 KB
Load time 23 ms
Start 219 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
Page Weight Inventory
27 resources · 710 KB · 149 KB savings available
PASS
27 resources · 710 KB · 149 KB savings available
Info::
Within 1MB page-weight target
Got: 710 KB
Info::
~149 KB of savings available
Warning::
26 third-party resources (100% of weight)
Info::
1 resources over 200KB
27 resources · 710.0 KiB · 26 third-party Within 1MB page-weight target
JavaScript 45% · 322.7 KiB
Image 34% · 242.2 KiB
Document 8% · 55.6 KiB
CSS 6% · 42.5 KiB
Font 5% · 38.3 KiB
Other 1% · 8.8 KiB

~148.7 KiB of savings available

Remove unused JavaScript: 148.7 KiB
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
27 requests over 2363ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 763 ms LCP 900 mshttps://prestashop-project.org// https://prestashop-project.org/ — 302 — 438 B — 49 ms — h2https://www.prestashop-project.org/www.prestashop-project.org/ https://www.prestashop-project.org/ — 200 — 55.2 KiB — 54 ms — h2https://www.prestashop-project.org/plugins/bootstrap/bootstrap.min.min.a5538d3aa24d4508f6df556ee392afc845fb9f3cc1b8ecd79ec6b054994a3e250c585da3047e2396faa129a0b98be6b93cc87f5e7a96c077df73ea4a59b8f2c1.csswww.prestashop-project.org/plugins/... https://www.prestashop-project.org/plugins/bootstrap/bootstrap.min.min.a5538d3aa24d4508f6df556ee392afc845fb9f3cc1b8ecd79ec6b054994a3e250c585da3047e2396faa129a0b98be6b93cc87f5e7a96c077df73ea4a59b8f2c1.css — 200 — 24.2 KiB — 27 ms — h2https://www.prestashop-project.org/plugins/slick/slick.min.08431097b0076f930a8938251d730c26abf00e8053310de93e7d8d3bb788a4fb18958a7a9e7df87b63af4253ec25b753b422b958835b3843b67a39d8c98f6b1b.csswww.prestashop-project.org/plugins/... https://www.prestashop-project.org/plugins/slick/slick.min.08431097b0076f930a8938251d730c26abf00e8053310de93e7d8d3bb788a4fb18958a7a9e7df87b63af4253ec25b753b422b958835b3843b67a39d8c98f6b1b.css — 200 — 701 B — 39 ms — h2https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/fontawesome.min.csscdnjs.cloudflare.com/ajax/libs/font... https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/fontawesome.min.css — 200 — 10.6 KiB — 30 ms — h3https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/brands.min.csscdnjs.cloudflare.com/ajax/libs/font... https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/brands.min.css — 200 — 898 B — 32 ms — h3https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/solid.min.csscdnjs.cloudflare.com/ajax/libs/font... https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/solid.min.css — 200 — 928 B — 24 ms — h3https://www.prestashop-project.org/style.8caf5f5c8b4731f1a1075f276ca633a96a06837f090e5b7fa55ec6e35fc5f10fa01559608a73468d1ef6b0720f191d73e7b16a6e75cb62efc740a82c23659cb4.csswww.prestashop-project.org/style.8c... https://www.prestashop-project.org/style.8caf5f5c8b4731f1a1075f276ca633a96a06837f090e5b7fa55ec6e35fc5f10fa01559608a73468d1ef6b0720f191d73e7b16a6e75cb62efc740a82c23659cb4.css — 200 — 3.8 KiB — 40 ms — h2https://www.prestashop-project.org/images/prestashop-logo.svg?v=2025www.prestashop-project.org/images/p... https://www.prestashop-project.org/images/prestashop-logo.svg?v=2025 — 200 — 965 B — 34 ms — h2https://www.prestashop-project.org/images/home.jpgwww.prestashop-project.org/images/h... https://www.prestashop-project.org/images/home.jpg — 200 — 100.0 KiB — 43 ms — h2https://www.prestashop-project.org/images/icon-userdocs.svgwww.prestashop-project.org/images/i... https://www.prestashop-project.org/images/icon-userdocs.svg — 200 — 947 B — 24 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-MJ8XZ68Lwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-MJ8XZ68L — 200 — 120.2 KiB — 240 ms — h2https://www.prestashop-project.org/images/icon-devdocs.svgwww.prestashop-project.org/images/i... https://www.prestashop-project.org/images/icon-devdocs.svg — 200 — 815 B — 32 ms — h2https://www.prestashop-project.org/images/icon-specifications.svgwww.prestashop-project.org/images/i... https://www.prestashop-project.org/images/icon-specifications.svg — 200 — 980 B — 23 ms — h2https://www.prestashop-project.org/images/download.jpgwww.prestashop-project.org/images/d... https://www.prestashop-project.org/images/download.jpg — 200 — 102.2 KiB — 27 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6.5 13' sty…www.w3.org/2000/svg' viewBox='0 0 6... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6.5 13' sty… — 200 — 0 B — 0 ms — datahttps://www.prestashop-project.org/fonts/Prestafont-Regular.woff2www.prestashop-project.org/fonts/Pr... https://www.prestashop-project.org/fonts/Prestafont-Regular.woff2 — 200 — 38.3 KiB — 23 ms — h2https://static.axept.io/sdk.jsstatic.axept.io/sdk.js https://static.axept.io/sdk.js — 200 — 202.5 KiB — 502 ms — h3https://client.axept.io/projectconfigurations/brands/6859145f7baee141c249caa3.json?r=0client.axept.io/projectconfiguratio... https://client.axept.io/projectconfigurations/brands/6859145f7baee141c249caa3.json?r=0 — 200 — 3.7 KiB — 246 ms — h3https://www.prestashop-project.org/images/favicon.svgwww.prestashop-project.org/images/f... https://www.prestashop-project.org/images/favicon.svg — 200 — 663 B — 23 ms — h2https://www.prestashop-project.org/images/favicon.svgwww.prestashop-project.org/images/f... https://www.prestashop-project.org/images/favicon.svg — 200 — 0 B — 2 ms — h2https://fonts.axept.io/fonts.googleapis.com/css?family=Source%20Sans%203:regular,500,600,700fonts.axept.io/fonts.googleapis.com... https://fonts.axept.io/fonts.googleapis.com/css?family=Source%20Sans%203:regular,500,600,700 — 200 — 1.4 KiB — 112 ms — h2https://client.axept.io/pack/en-USclient.axept.io/pack/en-US https://client.axept.io/pack/en-US — 200 — 4.3 KiB — 114 ms — h3https://api.axept.io/v1/analytics/evtsapi.axept.io/v1/analytics/evts https://api.axept.io/v1/analytics/evts — 204 — 361 B — 170 ms — h2https://axeptio.imgix.net/2022/01/d35cbf0e-80e7-4b22-b1f0-22a6f9371134.png?bg=a4dbe8&w=200&mask=https://axeptio.imgix.net/2022/01/64b1005a-e876-41b8-ab0b-5cef6f8a6caf.pngaxeptio.imgix.net/2022/01/d35cbf0e-... https://axeptio.imgix.net/2022/01/d35cbf0e-80e7-4b22-b1f0-22a6f9371134.png?bg=a4dbe8&w=200&mask=https://axeptio.imgix.net/2022/01/64b1005a-e876-41b8-ab0b-5cef6f8a6caf.png — 200 — 30.3 KiB — 22 ms — h2https://axeptio.imgix.net/2025/02/43c703a1-1b31-4d5b-919e-a7ef783e650d.png?auto=format&fit=crop&w=170&h=auto&dpr=1axeptio.imgix.net/2025/02/43c703a1-... https://axeptio.imgix.net/2025/02/43c703a1-1b31-4d5b-919e-a7ef783e650d.png?auto=format&fit=crop&w=170&h=auto&dpr=1 — 200 — 5.3 KiB — 9 ms — h2https://api.axept.io/v1/analytics/evtsapi.axept.io/v1/analytics/evts https://api.axept.io/v1/analytics/evts — 204 — 479 B — 185 ms — h2
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 395ms · 258KB · $1/mo
static.axept.io
Other
Costly
Execution 222ms
Transfer 203 KB
Unused 40%
Monthly Cost $1/mo
www.prestashop-project.org
Other
Optional
Execution 102ms
Transfer 55 KB
Monthly Cost $0/mo
Unattributable
Other
Optional
Execution 70ms
Transfer 0 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • static.axept.io adds 222ms and costs ~$1/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

static.axept.io takes 222ms 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

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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