Last updated: 5 November 2026.
Nothing leaves your browser except the one request described below. The extension reads the price text already visible on the page you are viewing, does arithmetic on it locally, and shows the result in a panel. It does not read, store, transmit or sell your browsing history, your marketplace account, your customers' data, or anything else.
Your fee settings — percentages, flat fees, item cost and shipping cost — are stored in Chrome's own synced storage for your profile, so they follow you between your own devices. They are not sent to us and we cannot read them.
If you paste a licence key and press Verify, the extension sends that key to Gumroad's public licence endpoint (api.gumroad.com) to check whether it is valid. That is the only outbound request the extension makes, and it happens only when you press that button.
storage — to remember your fee settings. activeTab — to read the price on the page you are looking at, only when the extension runs. Host access is limited to the marketplace domains the extension supports so it can read a price on a listing page.
There is no sign-up, no tracking pixel, no third-party analytics and no advertising of any kind in the extension.
Questions, or a request to delete anything: reply to your purchase receipt, or use the contact address on the Chrome Web Store listing.