Privacy Policy

Last updated: May 18, 2026

Summary

CoopleDog helps Slack users preview HTML locally in their browser. CoopleDog does not store HTML, clipboard content, Slack message text, or Slack files.

Data We Process

Slack sends event payloads to CoopleDog when subscribed events occur. CoopleDog may inspect message text in memory to detect likely HTML and decide whether to post a renderer link.

CoopleDog stores workspace installation information needed to operate the Slack app, including workspace ID and bot token. Short-lived OAuth state and event dedupe records may also be stored.

Data We Do Not Store

• HTML content
• Clipboard content
• Slack message text
• Slack file contents
• Rendered previews

Rendering

The renderer reads clipboard content only after the user clicks. Pasted HTML is written into a local browser iframe and is not sent to CoopleDog for rendering.

Third Parties

CoopleDog uses Slack for app events and Cloudflare for hosting. CoopleDog does not sell user data. If pasted HTML references external URLs, the user's browser may request those URLs when external resources are enabled.

Retention

Workspace installation tokens are retained until the app is uninstalled or access is revoked. OAuth state and event dedupe records expire quickly.

Contact

Email support@rhylan.uk.