Privacy policy.

Stamp requests permission to view and manage files in Google Drive. Its product workflow uses that permission only for Stamp project folders that you create or explicitly select.

A project contains its canonical archive, retained Drive revisions, a Current folder, generated PDF outputs, file identifiers, names, revision identifiers, and Stamp-specific metadata.

Google’s authorization grant technically permits broader Drive access than Stamp’s project-scoped workflow uses. Stamp does not inspect unrelated Drive content.

Source files, themes, components, assets, and generated documents are downloaded to your computer and processed locally. Stamp does not operate a hosted document service. Your Google Drive content is not transmitted to or stored on a Stamp-operated server.

Google OAuth access and refresh tokens are stored in the operating system’s secure credential store. On macOS, Stamp uses Keychain.

Stamp does not sell Google user data, use it for advertising, or share it with data brokers. Data is sent to Google only as needed to authenticate, read or update the selected project, preserve revisions, and mirror generated outputs.

Stamp’s use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including its Limited Use requirements.

Stamp has no product analytics, advertising trackers, or hosted telemetry. The CLI may make a daily request to GitHub Releases to check whether a newer version exists. That result is cached locally. Set STAMP_NO_UPDATE_CHECK=1 to disable automatic checks.

This website uses no analytics, cookies, local storage, or tracking scripts. Cloudflare delivers the static files and may process ordinary network logs under its own policies.

Local project files remain until you delete them. Drive projects and revisions remain under your Google Drive account and its retention rules until an authorized user removes them.

stamp logout removes Stamp’s locally stored Google credential. You can also revoke Stamp in your Google Account connections. Uninstalling Stamp does not delete local project folders or Drive content automatically.

Stamp uses OAuth 2.0 with PKCE, stores credentials in the operating system credential store, and publishes signed releases with checksums. No software can guarantee absolute security; report suspected vulnerabilities privately through the contact route on the support page.

Material changes will be published here with a revised effective date. For privacy questions or deletion guidance, use Stamp support.