PixelTwin – Privacy Policy
In short: PixelTwin does not collect, sell or share any personal or usage data. Everything you add to the extension stays in your own browser.
1. What PixelTwin is
PixelTwin – Pixel Perfect Overlay is a Chrome extension that overlays a design mockup on a web page so developers can compare the page with the design (opacity, blend modes, split view, match score, measuring and color checks).
2. Data we collect
None. PixelTwin has no account system, no analytics, no advertising and no tracking code. We do not receive, store or have access to any information about you, the pages you visit or how you use the extension.
3. Data stored on your device
To work, the extension saves the following only in your browser's local extension storage (chrome.storage.local) on your device:
- mockup images you add, and their thumbnails;
- layer settings (position, opacity, scale, rotation, folders) for each website;
- the panel's position and your preferences (theme, shortcuts, defaults).
This data is never synced or uploaded. You can remove it at any time by deleting layers in the panel, or all of it by uninstalling the extension. Files you export with “Export layers” are saved where you choose and are fully under your control.
4. Screenshots
The “Match” and “Colors” tools take a screenshot of the visible tab, only when you use them, to compare the page with your mockup. The screenshot is processed in memory on your device and discarded; it is never saved or transmitted.
5. Network requests
PixelTwin makes no network requests of its own. The only exception is when you choose to add a mockup from a link: the extension then downloads that image directly from the address you entered. No other data is sent with that request.
6. Permissions and why they are needed
| Permission | Purpose |
|---|---|
activeTab, scripting | Show the PixelTwin panel on the tab where you click the toolbar icon (and reopen it after a reload if you enabled that option). |
storage, unlimitedStorage | Save your layers, images and settings locally; design exports can be large. |
| Access to websites | Use PixelTwin on any site you build (localhost, staging, production), download an image from a link you provide, and capture the visible tab for Match and Colors. |
clipboardRead (optional) | Asked only when you click “Paste” to add an image from your clipboard. |
PixelTwin does not read, collect or change the content of the pages you visit, apart from drawing its own overlay.
7. Sharing and selling data
We do not sell, transfer or share any user data with third parties, and we do not use data for advertising, credit or lending purposes.
8. Children
PixelTwin is a developer tool and is not directed at children. It does not knowingly collect any information from anyone, including children.
9. Changes to this policy
If this policy changes, the updated version will be published on this page with a new effective date.
10. Contact
Questions about this policy: ugra1301@gmail.com