Privacy: the Own Taste browser extension

Last updated November 11, 2026

The Own Taste extension shows what a wine auction lot really costs on the pages of the auction houses it supports, and passes a lot to Own Taste's Split lots when you ask it to. This page says what it reads, what it keeps and what it sends. It covers the extension only.

What it reads

• Auction pages. On lot and catalog pages at K&L, Christie's, Sotheby's, Zachys and WineBid, it reads what the page shows about each lot: the wine, the bottles, the price or current bid, and when bidding closes. It works out the cost in your browser from that.
• Own Taste's own site: www.owntaste.app, and its earlier address, wine-auction-calendar-production.up.railway.app. There it reads the color theme you chose, so the extension wears the same colors, and it passes over a lot you've proposed.
• The tab you're on, when you open the toolbar button. Its address tells the calculator which auction house to start on. It isn't kept or sent.

It doesn't run on any other website.

What it keeps

In your browser only:

• each auction house's buyer's premium, as Own Taste publishes it;
• your color theme;
• whether you've folded the cost card away;
• the toolbar calculator's last auction house and bottle count;
• a lot you propose, for the moment it takes to open Split lots. The Split lots page then keeps it in your browser, for up to a day, until you add it to a group or discard it.

Removing the extension removes what it kept.

What it sends

• To Own Taste: requests for its public list of buyer's premiums and its calendar of upcoming auctions. They carry no cookies, no account details, and nothing about you or the pages you look at.
• To Google Fonts: on auction pages, the cost card loads Own Taste's two typefaces from Google Fonts. As with any website that uses them, Google receives your IP address when they load.
• A lot you propose reaches Own Taste's servers only when you choose a group and press Add to group in Split lots, where you're signed in to your account.

What it never does

• It never sends anything to the auction houses, and never places a bid.
• It has no analytics or tracking, and doesn't record the pages you visit.
• It doesn't sell or share anything about you with anyone.

Changes

If the extension starts to read, keep or send anything else, this page will say so first, with a new date at the top.

Contact

Questions about this page or the extension: write to hello@owntaste.app.