How can we help?

Drag any .md file into a tab, or press Ctrl/Cmd+O. For file:// links to work, enable Allow access to file URLs for the extension in your browser's extension settings, a one-time toggle.

Chrome, Edge, Brave, Opera and Vivaldi: any Chromium-based browser that installs from the Chrome Web Store. Firefox and VS Code versions are on the roadmap.

No. Install and read; there is nothing to sign into, and nothing is synced to a server. Annotations and bookmarks live in your browser's local storage.

GitHub, GitLab and similar sites already render Markdown on their file pages, so the extension stays out of the way there. It activates on raw files: hit the Raw button, or open any .md served as plain text.

Yes: raw.githubusercontent.com and the raw endpoints of GitLab, Bitbucket and Gitea all render, along with any .md or .mdx URL served as text.

Yes. The extension popup has a master toggle that disables rendering everywhere; it takes effect the next time a file loads. Per-site allow and deny lists are on the roadmap.

Yes. Everything renders locally in your browser: no servers, no account, zero data collection. See the Privacy Policy for the full detail.

Only two, both disabled by default: PlantUML rendering and link previews. Each asks for explicit consent before its first request, and can be switched off again at any time.

Completely. Every feature is included: annotations, exports, diagrams, all of it. No account, no trial, no feature limits.

For local files, check that Allow access to file URLs is enabled, then reload the tab. For web files, confirm the URL serves the raw file rather than a site's own viewer.

Mermaid and Graphviz run offline with no setup. If a diagram fails, its source usually has a syntax error: the inline error box shows the parser message next to your source. PlantUML is optional and must be enabled first.