Effective: October 13, 2026

Privacy Policy

The short version: your files never leave your browser, and we collect as little as possible.

1. Who we are

openmdfile.com ("the Service") is operated by CCC Studio. Contact: support@openmdfile.com.

2. Your files are never uploaded

The core promise of the Service: all Markdown parsing, rendering and exporting happens locally in your browser using JavaScript. Files you open, text you paste and documents you export are never transmitted to our servers, and we have no ability to see them. When you fetch a file via "Open from URL", your browser downloads it directly from the URL you provide; the request does not pass through us.

3. Data stored on your device

We use browser localStorage to remember your preferences (such as light or dark theme). This data stays on your device, is not transmitted to us, and can be cleared at any time via your browser settings.

4. Analytics

We use aggregate page-view counts and Google Analytics to understand overall traffic and which features are used. For the Mermaid tools we record anonymous usage events such as “diagram rendered”, “fix applied” or “PNG exported”, with details like the diagram type, export format and which repair rules ran. Your Markdown, your diagram code and file names are never sent. We do not use advertising trackers and we do not sell data.

5. Cookies

Google Analytics sets first-party cookies (such as _ga) to count returning visitors; you can block them in your browser settings or with Google’s opt-out add-on. The Service does not set advertising or cross-site tracking cookies.

6. Third-party resources

Pages load open-source libraries (e.g. rendering and syntax-highlighting scripts) from public CDNs. Your browser requests those files directly from the CDN, which may see your IP address as part of normal web traffic. No document content is included in such requests.

7. Children

The Service is a general-audience tool and does not knowingly collect personal information from children.

8. Changes

We may update this policy from time to time. Material changes will be reflected by the effective date at the top of this page.

10. Contact

Questions about privacy? Email support@openmdfile.com.