Chrome extension
Vinted Country Flags
Vinted shows you items from sellers all over Europe and never says where they are. This extension does.
What it does
- A flag on the listings you browse. The seller's country flag sits in the corner of each item on the homepage, in search results and on seller pages.
- Reads what the page already knows. Seller ids come from the page's own data and from the requests Vinted makes anyway. On a vinted.ro search that named 96 of 96 sellers in 8 ms, with no extra requests.
- Works on every Vinted domain. No per-country code. It found every card on vinted.pl, .de, .co.uk and .ro without a change.
- Cards near the screen go first. Where a seller lives costs one profile lookup, once. Cards in and near the viewport are looked up first, and the popup shows how many are still coming.
- Learns new markets by itself. It builds the currency-to-country table from Vinted's own countries endpoint and caches it for a week.
- One cache across countries. Sellers are cached for 30 days in the service worker, so a seller found on vinted.fr is already known on vinted.de.
- Polite to Vinted. It stays under the measured rate limit, shares one budget across every tab and backs off whenever Vinted says to.
How it was built
Vinted shows listings from all over Europe and never says where the seller is. The extension reads that from data the page already has, and asks Vinted only when it has to.
Decisions that mattered
- Read what the page already received. Seller ids come from the page's own server-rendered data and from the requests Vinted's front end makes anyway. On a vinted.ro search that named the sellers of 96 of 96 cards in 8 ms, with no extra requests.
- Measure the rate limit, then stay under it. 30 requests to the profile endpoint succeed and the 31st gets a 429. The extension allows 20 at once and 0.8 per second after that, shared by every tab, so Vinted's own front end keeps some headroom.
- Adapt when Vinted changes. On 8 October 2026 the endpoint that made most lookups free started returning 404. Version 2.2 dropped it and now learns exchange rates from sellers it already knows, so a converted price can name the seller's currency for free.
- No flag beats a wrong flag. A card whose seller nothing named gets no flag rather than a guess.
How it's tested
Node tests cover the currency rule against the real 27-market table, price parsing in every market's number format, the rate limiter and both feed parsers. The parts that depend on Vinted's pages were checked against live pages on five Vinted domains.
Where it stands
Version 2.2.0. Install it by loading the unpacked extension in Chrome.
Made with
- JavaScript
- Chrome Manifest V3
- Vinted web API
Latest changes
Full changelog-
back on the grid
Shows the seller's country flag in the corner of every Vinted listing. Vinted never tells a buyer where a seller is, anywhere on the site.
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the homepage
Shows the seller's country flag in the corner of every Vinted listing. Vinted never tells a buyer where a seller is, anywhere on the site.
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every Vinted market
Shows the seller's country flag in the corner of every Vinted listing. Vinted never tells a buyer where a seller is, anywhere on the site.