Unisizer by Pink Grizzly

Unisizer helps users find the right clothing and shoe size while shopping online.

Open a product page in an online store, and the extension detects the brand and product category. It then uses the selected Unisizer profile to show a size recommendation directly in the browser.

Unisizer is useful if you:

shop across multiple fashion stores
want fewer size mistakes and fewer returns
want faster size decisions without manually checking every size chart
Main features:

sign in with a Unisizer account
load saved clothing and shoe profiles
detect brand and category on the current product page
show a recommended size in the extension popup
switch between profiles in one click