Large icon for MarsEdit application

MarsEdit 4

Write, preview, and publish your blog.

Requires macOS 10.12 or higher. Read the release notes.

Think Outside The Browser!

Browser-based interfaces are slow, clumsy, and require you to be online just to use them. Browsers are perfect for reading web content, but not ideal for creating it. If you're serious about writing for the web, you need a desktop blog editor. If you're lucky enough to have a Mac, nothing is more powerful, or more elegant than MarsEdit.
Screenshot of MarsEdit's main window.

MarsEdit continues to evolve over the 15+ years since it debuted. Here are some of the most-loved features of the app:

Feature Overview

Rich and Plain Text Editing

MarsEdit's editor switches easily from Plain to Rich Text, so you can work in whichever format you prefer. Love Markdown? MarsEdit can preview it and convert it to HTML if needed.

Advanced WordPress Support

MarsEdit knows about featured images, post formats, and multiple authors. It even supports adding custom fields that appear right in the post editor window.

Focused on Writing

With full support for Apple's standard full-screen mode, and a custom "Typewriter Mode" to keep text centered vertically, you can work on your blog with minimal distraction.

A Real Media Maven

Quickly scan your Apple Photos, Aperture, or Lightroom, and insert images into your blog post with the click of a button. MarsEdit uploads them all when you're ready to publish.

Enhanced Blog Archiving

For most blog services, MarsEdit is now able to download the entire history of published posts and pages, so a backup of all your writing is stored safely on your Mac.

Automatic Preview Template Generation

Preview your posts as you write them, just as they'll appear when published on the web. A baseline template is easily created and can be fine-tuned by hand if desired.

Fast Live Previews

Native filters for Markdown, MultiMarkdown, and Convert Line Breaks run at lightning speed, converting your writing on the fly as you type.

Dazzling System Integration

MarsEdit Safari App Extension makes it easy to create new posts based on things you read on the web. Support for macOS standard autosave means never worrying about losing your work.

Offline Freedom

Write when you want to, without an internet connection. Fine-tune your masterpiece on the boat, plane, or train, and publish when you get back online.

Wildly Compatible

Works with WordPress,, Tumblr, TypePad, Movable Type, and any blog that supports a standard MetaWeblog or AtomPub interface.

More screenshots. Click to enlarge:

Thumbnail image of MarsEdit main window. HTML Editor & Macros
Thumbnail image of MarsEdit's rich text editor and media browser Media Manager
Thumbnail image of MarsEdit's rich editor and preview window Rich Editor & Preview.
Full-size image of MarsEdit main window.
Full-size image of MarsEdit Rich Text editor and Media Browser
Full-size image of MarsEdit's rich editor and preview window