Hermes·Markdown

A place where all you can do is write.

An editor for your notes and code that runs in your browser and saves straight to your device. No accounts, no cloud, nothing between you and the page.

Read the docs

Private by default. Your work stays in files you control.

Pick your paper

Choose the colors you write on, for light and dark. The page changes as you pick, and you can change them later in Settings.

Light

Dark

A local-first editor for notes and code

HermesMarkdown edits Markdown notes and code files where they already live. There is nothing to install and nothing to sign up for, and your files stay readable by any other editor or tool.

  • Your files, on your disk

    Open a folder and edit its files in place, offline too. Nothing is uploaded, there is no account, and an existing Obsidian vault opens as-is.

  • Notes that connect

    Link notes with [[wikilinks]], embed a note, a heading, an image or a CSV table with ![[Note]], edit tables like a spreadsheet with formulas, and sketch on drawing boards stored as Markdown.

  • Code files, too

    TypeScript, Python, JSON, YAML and other text files open in the same editor, with highlighting, line numbers, folding, an outline of their functions and classes, and Format Code with your Prettier config.

  • Search everything

    Find any file by name, or search the text of notes and code across the vault, with a regular expression when you need one.

  • Make it yours

    Pick from four light and four dark color themes, from paper and blue ink to Solarized, plain neutral white and graphite. Hide the interface and dim everything but the sentence you're writing, or turn on Vim keys.

  • Export and AI, both optional

    Export notes as PDF, a standalone HTML page or compiled Markdown. AI features use your own API key and stay off until you add one.

Works in every modern browser

Where your files live depends on what the browser allows.

  • Chrome, Edge and other Chromium browsers

    Read and write a folder on your disk directly.

  • Safari, Firefox, iPhone, iPad and Android

    Keep files in a browser vault stored on the device.

  • Alongside git

    A disk vault is a plain folder, so keep it in a git repository and commit with the tools you already use.

Questions

Is HermesMarkdown free?
Yes. HermesMarkdown is free to use in any modern browser, with no account and no subscription.
Where are my files stored?
In a vault you choose: a folder of Markdown files on your disk or a browser vault kept in your browser's own storage. Files are never uploaded to a HermesMarkdown server.
Does it work offline?
Yes. Install it as an app from your browser and it keeps working without a connection. Only the optional AI features need the network.
Does it work on Safari, Firefox, iPhone and iPad?
Yes. Where the browser can't open a folder on disk, as in Safari, Firefox and mobile browsers, files are kept in a browser vault on the device.
Can I edit code files with it?
Yes. Code and other text files in the vault open in the same editor, highlighted for their language, with an outline of their symbols, regex search across files and Prettier formatting. Git stays outside the browser: commit with the tools you already use.
Can I use it with my Obsidian vault?
Yes. An Obsidian vault is a folder of Markdown files, so you can open it directly in Chrome or Edge. Files stay plain Markdown and wikilinks keep working.

New to Markdown? Read what a Markdown editor is, try the free Markdown tools, or browse the documentation.