Read the web as markdown.
Write it back.

Mardo is a small browser and author for markdown. It asks servers for markdown, shows it cleanly, and saves your changes back where the server allows.

Download Mardo App Store View on GitHub

Free and open source (MIT). macOS, Windows, Linux, iPhone and iPad.

Mardo on a Mac, showing a markdown page with its toolbar, tabs and address bar

Mardo on an iPhone, reading a markdown page with the toolbar along the bottom

A browser that prefers markdown

Plain text pages load fast, read well and are easy to keep, copy and hand to an AI.

Asks for markdown

Sends Accept: text/markdown, and looks for a .md version of ordinary pages and a site's llms.txt. Tables, task lists and footnotes render properly.

Convert any page

No markdown version? One click maps an HTML page's headings, lists, links, images and tables to markdown, or has your AI model rewrite it.

Write it back

Where a server allows it, Mardo turns into an editor and saves with PUT, using your saved login and warning you if the page changed meanwhile.

Bookmarks that you own

Folders, descriptions, keywords and search by typing in the address bar. Keep them on your computer or in a LinkaGoGo folder.

Tabs and history

Tabs with their own history, restored on the next start. History is itself a markdown page you can save.

Private by default

Logins for each site go in your system keychain and are sent only to that exact site. Nothing is sent to an AI service until you allow it.

Open any .md file

Double click a markdown file to read it. Save any page as a .md file, or copy its markdown in one click.

Your look

Follows light and dark, with six color schemes, and a full-width mode for big screens.

A network console

See every request with its status, headers, timing and size. Cookie and token values stay hidden.

How a page gets here

Mardo asks first, falls back politely, and always tells you which one you got.

Ask the server for markdown with a normal request.
No luck? Look for the page's .md twin, or the site's llms.txt.
Still none? Show the title and links, with a Convert to markdown button.

Not sure where to start? Where can I find markdown on the web?

# what Mardo sends
GET /docs/guide
Accept: text/markdown, text/x-markdown;q=0.9, …

# what it can send back, when the server allows
PUT /docs/guide
If-Match: "3f9a…"
Content-Type: text/markdown

AI that reads with you

Use the model you like: Claude, OpenAI, Gemini, a local Ollama, or any compatible server. On an iPhone it can be Apple Intelligence, running on the device itself.

Summarize, outline, translate

Condense a long page, find your way around it, or read it in another language. The result appears above the page.

Ask about the page

Chat with the page open. Conversations are saved per page and you can delete them any time.

Compare tabs

Pick several open pages and see what they agree on and where they differ.

Edit with words

Tell the AI what to change in a markdown page, review the highlighted differences, and keep or discard them.

Tidy your bookmarks

Suggest titles, keywords and folders. You review every suggestion before anything changes.

You decide what leaves

Page text goes only to the provider you choose, and only after you allow it. A model on your own computer sends nothing out.

Download

Pick your system on the latest release page. Or build it yourself from the source; the README shows how.

macOS

Apple silicon, macOS 13+

Signed and notarized by Apple, so it opens without warnings.

Download for Mac

Windows

64-bit

Not code-signed yet, so SmartScreen may warn about an unknown publisher: choose More info, then Run anyway.

Download for Windows

Linux

64-bit, GTK and WebKit

A tarball with an installer script and desktop entry. Needs libgtk-3 and libwebkit2gtk-4.1.

Download for Linux

iPhone and iPad

iOS and iPadOS

The same core runs in an iOS app with a thumb-friendly layout and Apple Intelligence built in.

Get it on the App Store

Read the web as markdown.Write it back.