Privacy Policy for Markdawn

Last Updated: February 13, 2026

Summary: Markdawn is a privacy-focused extension that processes everything locally on your device. We don't collect, store, or transmit any user data.

Overview

Markdawn ("the Extension") is committed to protecting your privacy. This privacy policy explains how we handle information when you use our Chrome extension.

Information Collection and Use

We do not collect, store, or transmit any personal information or user data.

What the Extension Does

Renders local markdown files (.md, .markdown) in your browser
Stores your theme preference (light/dark mode) locally in your browser
Processes all markdown content locally on your device

Data Storage

The Extension uses Chrome's storage API solely to save your visual preferences:

Theme Setting: Your choice of light or dark mode
Storage Location: All preferences are stored locally in your Chrome browser
Synchronization: Settings may sync across your devices if you have Chrome sync enabled

What We DO NOT Collect

Personal information
Browsing history
File contents or names
Usage statistics or analytics
Cookies or tracking data

Permissions Explanation

Storage Permission

Used exclusively to save and retrieve your theme preferences (light/dark mode) locally in your browser.

File URL Access (file:///*)

Required to read and render markdown files from your local file system. The Extension only accesses files you explicitly open in Chrome and does not scan, upload, or transmit file contents.

Data Processing

All markdown rendering happens entirely within your browser:

No network requests are made to external servers
No data leaves your device
No analytics or tracking is performed
No third-party services are contacted

Third-Party Libraries

The Extension uses the following open-source libraries for local rendering only:

Marked.js (markdown parsing)
Highlight.js (syntax highlighting)
Mermaid.js (diagram rendering)
KaTeX (math equation rendering)
DOMPurify (security/sanitization)

These libraries run entirely in your browser and do not transmit data externally.

Children's Privacy

The Extension does not knowingly collect any information from anyone, including children under 13.

Changes to This Policy

We may update this privacy policy from time to time. Any changes will be posted on this page with an updated "Last Updated" date.

Consent

By using the Markdawn extension, you consent to this privacy policy.

Remember: Markdawn values your privacy. Everything happens locally on your device, and we never collect or transmit your data.