The extension's privacy policy.
Last updated August 2026 · applies to the Callume browser extension.
The short version: the extension sends nothing to any server. Your color palette is stored by your own browser, the verdict math runs on your own machine, and the only network requests it makes are to load the shop's own product images so it can measure their colors. The one message it ever answers is from callume.com itself, inside your browser — details below. No account, no analytics, no tracking.
What the extension stores
One small thing: your color palette — a few kilobytes of measured color values (your seasons, wear and avoid colors, and personal color measurements) plus, if you use the feature, a short list of colorway names the dictionary didn't recognize. Both live in Chrome's own extension storage on your device (and, if you're signed into Chrome, in Chrome's sync — governed by Google's terms, not ours). We never see either.
What the extension sends
Nothing. There is no server side. Every verdict — which colors suit you, what to pair them with — is computed inside the page by the extension's own packaged code. The extension makes network requests for exactly one purpose: fetching the retailer's publicly served swatch and product images (from the retailers' image CDNs) so it can read their pixels and measure the actual color. Those are ordinary image downloads, the same ones the shop page itself makes; nothing about you rides along.
What the extension can see
It runs only on the supported shopping sites named in its listing. On those pages it reads product titles, categories, and colorway swatches so it can rate them. It does not read forms, passwords, carts, or payment fields, and it does not record or transmit your browsing.
Analytics, accounts, tracking
None. No analytics of any kind, no account, no cookies, no fingerprinting, no third-party code. The extension's fonts and all of its logic are packaged inside it.
The unknown-names list
When a shop invents a colorway name the extension's dictionary doesn't know ("Glacier Fizz"), the name — just the name, never the page or anything about you — is kept in the same local storage so you can copy the list from the popup and send it to us manually, if you choose. Nothing is submitted automatically. If you never touch the Copy button, that list never leaves your browser either.
The one exception: callume.com
When you open your reading on callume.com in a browser with the extension installed, the page can hand your measured palette to the extension so it loads with zero pasting, and the extension replies with a receipt — whether it's installed, its version, and which palette version it already holds. That exchange happens entirely inside your browser, only ever with callume.com, and carries nothing about your browsing. No other website can talk to the extension at all.
Your Reading
If you load a palette from a Callume Reading, the palette in the extension is a copy of measurements you already own. The Reading itself — the photos and analysis behind it — is covered by the site privacy & biometric policy, which is a separate document because the hosted app genuinely does process photos. The extension does not.
Deleting your data
Uninstall the extension. Chrome removes its storage with it. That's the whole procedure — there is no server copy to chase.
Changes
If a future version ever changes what the extension stores or sends, this page is updated and re-dated before that version ships, and the change will be visible in the extension's own permission prompts.
Contact
Questions: privacy@callume.com.