FitMatch reads the product page you're on, compares the garment against your own measurements, and tells you which size to pick — with an honest confidence score. Fewer returns, less guessing.
FitMatch uses the most reliable source available, in this order:
If the page lists real measurements, they're matched exactly to your body. Highest confidence.
No chart? The AI reads the product photos, the model reference ("181 cm wears M") and your measurements to judge the fit. Shown as an estimate, never as fact.
Nothing readable? It falls back to a standard chart — clearly marked as a rough guide only.
A size recommendation is only useful if you can rely on it.
Instead of inventing numbers, it reasons from what's known: the model's height and size, and how the garment actually drapes in the photos.
Every result carries a confidence score, and estimated measurements are marked with ~ so you always know what's solid and what's a best guess.
See how it sits on chest, shoulders, waist and hips — not just a single letter.
The same garment always gives the same answer, and your fit preference is applied by fixed rules — never left to chance.
FitMatch works on any webshop. If you'd like something to test it on, here's the exact product page used in the screenshots above:
Comme des Garçons Play — camouflage heart-print T-shirt (Farfetch)
Open it, click the FitMatch icon and press Analyse this page. This is an affiliate link — see the disclosure below.
Your body measurements are stored locally in your browser — there are no accounts, no sign-up, and nothing is sold or shared with advertisers.
To analyse a page, the product's text and image links are sent to our server for the AI assessment. Read the full privacy policy.
FitMatch may earn a commission if you choose to click a link to a retailer from the extension and go on to buy something. This never affects the size we recommend, and it costs you nothing. Links that can earn a commission are labelled as such.