Privacy Policy
Last updated: August 25, 2026
The short version: SeamShot doesn't have a server. Every capture, comparison, and watch check happens on your device, and the images and text it stores stay in your browser's local storage. Nothing is uploaded anywhere.
What SeamShot processes
When you use SeamShot, it reads and temporarily processes the content of the page you're capturing — text, image URLs, and a screenshot of the page's visible content — in order to:
- Capture: stitch scrolled slices of the page into one full-page image.
- Compare: keep the previous capture of a page so it can show you what changed.
- Watch: re-capture a page or element you've registered, on the schedule you set, to check for changes.
This data is stored in your browser's local IndexedDB storage (the same origin as the extension) and is never sent to SeamShot's developer or any third party. Uninstalling the extension, or clearing its site data, removes it.
What SeamShot does not do
- No servers, analytics, or telemetry — SeamShot has no backend of its own.
- No sale or transfer of your data to third parties.
- No use of your data for advertising, credit decisions, or lending.
- No collection of passwords, payment details, health data, or personal communications.
Permissions this extension uses, and why
- activeTab / host access: to capture and read the content of the tab you're actively working with, only when you click a capture or watch action.
- scripting: to inject the capture logic into the page (scrolling it, reading its text/images) in direct response to something you clicked.
- offscreen: to run the canvas-based image stitching and hashing that a background service worker can't do on its own.
- clipboardWrite: to copy a finished capture to your clipboard after you take it.
- downloads: to save a capture as a PNG or PDF file when you click Save.
- alarms: to run scheduled checks for pages you've chosen to watch, in the background.
- notifications: to alert you when a watched page changes, or when a watch has been auto-paused after repeated failures.
Changes to this policy
If this policy changes, the "Last updated" date above will change with it. Material changes will also be reflected in the extension's Chrome Web Store listing.
Contact
Questions about this policy or how SeamShot handles data: jinhyuk4678@gmail.com