Short version: OnionSkin only looks at the tab you point it at. Your sheets and screenshots stay on your machine. If you buy the folio, a licence check talks to a payment provider — that carries a licence key, not your design sheets or screenshots.
Who we are
OnionSkin is a Chrome extension and related website operated by BryteLabs and Nestamedia Studios (“we”, “us”). This policy covers the extension, the OnionSkin website (onionskin.brytelabs.co), and the paid folio features.
Questions: hello@brytelabs.co
What OnionSkin does
When you click to trace a page, OnionSkin reads design values from that tab — colours, type, spacing, hover states, and similar — captures a screenshot of the visible viewport, and can save the result as a sheet on your device. You can also export a sheet (for example as Markdown or JSON) or send it to an AI tool yourself.
What we collect
We do not collect your browsing history
The extension only gets access to the active tab when you use it. It does not run in the background across the rest of your browsing, and it does not upload the pages you visit.
Sheets and screenshots stay on your device
Traced sheets are stored in Chrome’s local extension storage on your machine. A sheet can include measured design values and a screenshot / thumbnail of the visible tab at the time you traced. That image may show whatever was on screen — including personal or sensitive content if it was visible. We do not host a cloud library of your sheets or screenshots.
Screenshots and sheet data remain until you delete them from the folio, or clear extension / browser data.
Licence keys and trial usage may sync with Chrome
Folio licence keys and free-trial usage counters are stored with Chrome’s sync storage when available (with local storage as a fallback). That means they can follow your signed-in Chrome profile across devices according to your Chrome sync settings. Sync can include a licence key in plain text on your profile. Library sheets and screenshots use local storage and are not written to sync storage by OnionSkin.
Config files you choose to check
If you use “trace over your own code”, files you select are read in the page to compare against a sheet. They are not uploaded to us. Treat them as local processing only.
When you buy the folio
Purchases are handled by our payment/licence provider (Polar). We (and they) process what is needed to take payment and validate a licence key — typically things like a key, purchase status, and related billing metadata. That check does not include the contents of your design sheets or screenshots.
Website
The marketing site at onionskin.brytelabs.co may receive standard server or analytics logs (for example IP address, pages viewed, browser type) depending on how it is hosted. Fonts are self-hosted on this site (not loaded from Google Fonts). We do not use the website to collect the contents of sheets you create in the extension.
The website uses Google Analytics (Google tag / gtag.js, measurement ID
G-TEQ8PZP3VD) to understand aggregate traffic — for example page views, referrers,
and device type. Google may process this data under its own terms. Analytics runs on the
marketing website only; the Chrome extension does not load Google Analytics
or other remote analytics scripts.
Permissions the extension asks for
OnionSkin requests a short list of Chrome permissions:
- activeTab — access the tab you choose when you run a trace
- scripting — run the tracer in that tab
- storage — save settings, sheets, screenshots, and licence/trial state
- unlimitedStorage — allow larger local libraries of sheets and images
- clipboardWrite — copy the brief to your clipboard when you send or copy
It also declares host access only for the AI tools it can hand a sheet to (Claude, ChatGPT, Gemini, Lovable, Manus) and for licence checks against Polar. It does not request broad “all websites” access for tracing — tracing uses activeTab on the page you click.
Extension pages (popup and folio) do not load remote fonts or analytics. They use system fonts only.
What you send elsewhere
If you paste a sheet into Claude, ChatGPT, Cursor, or another tool, or export a file and upload it somewhere, that transfer is under that tool’s terms and privacy policy — not ours. When you choose Send, a brief and optionally a screenshot can be placed into that tool’s composer. Only send what you are happy to share.
How long we keep things
- Sheets and screenshots: until you delete them or clear extension / browser data
- Licence keys / trial usage: while stored in your Chrome profile (and synced if Chrome Sync is on)
- Licence validation with Polar: as needed to confirm an active purchase
- Website logs: according to our host’s normal retention
Your choices
- Don’t click trace — nothing runs on the page and no screenshot is taken
- Delete sheets (and their screenshots) from the folio, or remove the extension
- Turn off Chrome Sync for extensions if you do not want licence/trial data synced
- For purchase or licence questions, contact us at the email above
If you are in the UK or EEA and want to exercise privacy rights (access, deletion, and so on) about data we hold about you, email us and we will help where it applies.
Children
OnionSkin is aimed at people building products and interfaces. It is not directed at children under 16.
Changes
We may update this policy as the product changes. The “Last updated” date at the top will change when we do. Continued use after an update means you accept the revised policy.