MD4A4H Privacy Policy

Last updated: May 19, 2026
Extension: MD4A4H (Markdown-for-Agents for Humans)
Contact: Github Issues

Summary

MD4A4H does not collect, sell, or transmit your personal data to us or any third-party analytics service. All core functionality runs locally in your browser.

What the extension does

When you use MD4A4H, the extension may:

• Read the URL of the active tab to check whether the site supports Markdown-for-Agents.
• Send HTTP requests from your browser to the same website you are visiting (for example, re-fetching a page with Accept: text/markdown when you choose Markdown view).
• Store preferences on your device (for example, HTML vs Markdown mode per tab, capability cache, and settings).

Data storage

Data is stored locally using the browser extension storage APIs (chrome.storage.local, chrome.storage.sync, and session storage where supported). We do not operate a backend server for this extension.

Stored data may include:

• Per-site markdown capability cache (domain, capability result, timestamp)
• Your settings (for example, “always prefer Markdown”, badge preferences)
• Per-tab view mode while the browser session is open

You can clear this data by removing the extension or clearing extension site data in your browser settings.

What we do not do

• No accounts or sign-in
• No analytics or telemetry SDKs
• No advertising
• No sale of user data
• No remote code execution from our servers

Permissions

| Permission | Why |
|------------|-----|
| activeTab | Act on the page you are viewing when you open the popup |
| tabs | (Firefox) Identify the active tab URL for capability checks |
| storage | Save your preferences and capability cache locally |
| scripting | Inject content scripts when needed for mode switching |
| <all_urls> (host) | Content scripts and same-origin fetches on sites you visit; required because markdown-capable hosts are not fixed to one domain |

Third parties

Network requests go only to the websites you visit. MD4A4H does not call Ember-operated servers for normal operation.

Publisher sites may apply their own policies and Content Signals when returning Markdown.

Children

MD4A4H is not directed at children under 13 and does not knowingly collect information from children.

Changes

We may update this policy when the extension changes. The current version is always in the repository at PRIVACY.md and store/site/privacy.html.

Your rights

Because we do not collect personal data on our servers, there is no account data for us to export or delete. Uninstalling the extension removes locally stored extension data.

Contact

Questions or privacy requests: open an issue at
https://github.com/coreyhines/md4a4h/issues