DocBlocks
Markdown editor with private, on-device AI
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DocBlocks - Markdown editor with private, on-device AI

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DocBlocks is a free, open-source markdown editor for Mac, Windows and Linux, plus the web, VS Code and the command line. Your documents stay plain .md files in your own folders, and one file can become a Word doc, PDF, slide deck, e-book or video. New: opt-in AI that can run entirely on your computer. It reviews drafts, writes and rewrites, draws diagrams, words your slides, makes summaries, quizzes and flashcards, and takes dictation or reads aloud. No account, no lock-in.

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Hi Product Hunt!

I built DocBlocks because I wanted to use markdown files as the fundamental core for everything I do, that could export to something polished: a Word doc, a PDF, a slide deck, an e-book, even a narrated video, all from the same file. is a free editor on the web, and we have apps for Windows/Mac/Linux as well. It's also a little bit of a test bed for a local AI platform - I've added some local AI features for document review, content editing, diagram creation, and more.

What's in it:

  • Three views of every document: a rich WYSIWYG editor, the raw markdown, and Play mode, which presents the same file as a slideshow, video, dashboard, or page.

  • Export to almost anything: PDF, DOCX, PPTX, HTML, EPUB, MP4, and more. You can also open a DOCX, PDF, PPTX, or spreadsheet and edit it as markdown.

  • Everywhere you write: a desktop app for Mac, Windows, and Linux, in the browser, and from the command line.

New: AI features. AI is off until you turn it on, and it can run entirely on your own computer (Apple Intelligence or a downloaded local model), so your documents never have to leave it. It can:

  • review a draft in different styles (general, resume, fact check, concise, plain language) and suggest edits

  • write, continue, or rewrite a selection

  • draw diagrams and SVG illustrations

  • word your slides

  • turn a document into a summary, quiz, or flashcards

  • take dictation and read your document aloud

I have some metrics of how it performs with local models if you are interested:

It also has an MCP server, so AI agents like Claude can turn their output into finished documents.

DocBlocks is free -- no accounts, no ads, no tracking. Open source at github.com/bendyline/docblocks.

I'd love to hear what you'd make with it, and what's missing!