www.e.leclerc speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 15:23 UTC. Grade D (62/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 58 ms 1%
- TCP connect 28 ms 1%
- Server wait 4.33 s 98%
Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.
How this page compares
Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.
What these numbers mean
- The first byte took 4.42 s. Everything else waits for that number, so the server is where to start: caching, a slow query, or an overloaded host.
- The page transfers 1.04 MB over 14 request(s), which is lean. Javascript files are 88% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- The largest element took 2.78 s to paint, past the 2.5 s threshold: usually a hero image that is too big or a render-blocking script in front of it.
- Layout shift is 0.428 (good is under 0.1): something without a reserved size is loading late - an image, an ad, or a font swap.
- The main thread was blocked for 559 ms, so taps and scrolling wait while scripts run.
Fix first: Server response time (TTFB) - Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.
Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.
Screenshot
What the page looks like
Loaded in headless Chromium on this server. Click an image to open it full size.
Browser render
The same URL loaded in a real browser, so these are the readings curl cannot produce. The grade above is still built from the server measurements.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 14 request(s) in total, 1.04 MB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 4415 ms. Of that, 4330 ms was the server thinking and 86 ms was connection setup. A first byte under 400 ms is what a visitor feels as instant.
Fix: Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.
TLS certificate validity
high impactThe certificate for www.e.leclerc has 7 day(s) left.
Fix: Renew automatically (certbot with a working renewal timer) and alert on the certificate, not on the renew command, so a silent failure is caught weeks before a browser warning.
Total page weight
medium impactThe page transfers 1.04 MB across 14 request(s), with the document itself at 779 B.
Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.
JavaScript weight
medium impact1 JavaScript file(s) over 200 KB: main.259d34b59d0f1fef.js (857.2 KB)
Fix: Split routes, remove unused dependencies, and prefer a two-file build (one pinned library, one application bundle) over many small ones.
Avoid extra redirects
medium impact1 redirect hop(s) before the page load started, each one a full round trip before the first byte.
Fix: Link to the canonical URL (and make sure http, the apex domain and www all point at it) so no visitor pays a redirect first.
Waterfall
Slowest requests
Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party
| Request | Type | Status | Time | Size |
|---|---|---|---|---|
| https://www.e.leclerc/assets/i18n/app/app/fr.json | other | 200 | 773 ms | 1 B |
| https://www.e.leclerc/assets/i18n/app/catalogue/fr.json | other | 200 | 730 ms | 1 B |
| https://tracker.quadran.eu/appYsight.js 3rd party | javascript | 200 | 633 ms | 25.6 KB |
| https://www.e.leclerc/assets/config/app.json | other | 200 | 604 ms | 3.5 KB |
| https://www.e.leclerc/main.259d34b59d0f1fef.js | javascript | 200 | 584 ms | 857.2 KB |
| https://www.e.leclerc/runtime.16bf561caf9e3ff7.js | javascript | 200 | 578 ms | 2.9 KB |
| https://www.e.leclerc/assets/fonts/roboto/roboto-v27-latin-ext_latin-500.woff2 | fonts | 200 | 564 ms | 22.0 KB |
| https://www.e.leclerc/criteo-assets/omweb-v1.js | javascript | 200 | 550 ms | 16.3 KB |
| https://www.e.leclerc/criteo-assets/omid-session-client-v1.js | javascript | 200 | 548 ms | 13.4 KB |
| https://www.e.leclerc/assets/fonts/roboto/roboto-v27-latin-ext_latin-regular.woff2 | fonts | 200 | 540 ms | 21.9 KB |
| https://www.e.leclerc/polyfills.5e65d6a74799c377.js | javascript | 200 | 537 ms | 14.5 KB |
| https://www.e.leclerc/styles.ed2e249b97f3d4dd.css | css | 200 | 530 ms | 81.1 KB |
| https://www.e.leclerc/favicon.ico | images | 200 | 530 ms | 866 B |
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