The #1 Blog Editor for the Mac!

MarsEdit is the best way to write, preview, and publish your blog.

Free to download! Unlock a free trial in the app, purchase a full license, or continue to use the app for free to maintain an archive on your Mac and work locally with your published blog posts.

- Works with WordPress, Micro.blog, Tumblr, TypePad, Movable Type and dozens of other systems that support standard MetaWeblog and AtomPub interfaces.

- Work offline with local drafts on your Mac, preview the formatting and content of your posts, and publish when you're ready to share with the world.

- Easily browse for a photo from your iPhoto, Aperture, or Lightroom libraries, and embed it for automatic upload with your blog post.

- Avoid common browser-based problems like losing your edits by navigating to another page, poor spelling for lack of a spell checker, etc.

- Perfect for professional bloggers and casual writers who don't want to mess around with clunky web-based interfaces. If you're lucky enough to have a Mac, nothing is more powerful or more elegant than MarsEdit.

- Write in Rich Text "WYSIWYG" that will be converted automatically to HTML when you publish, or hand-tune the HTML in a syntax-highlighted code editor. Markdown fan? Write in Markdown in the HTML editor and see a live-preview of the HTML rendering in the preview window.

- Compatible with macOS 10.12 or higher.

Coming to the Mac from Windows? MarsEdit is similar to Live Writer, the popular Windows blog editor, but differs in some ways. Ask around and read MarsEdit reviews to decide if MarsEdit is right for you.


バージョン 4.4.10

Version 4.4.10 is a quick fix to address a crashing bug on macOS 10.12 and 10.13.

Version 4.4.9 was a quick fix to address a crashing bug in 4.4.8.

Version 4.4.8 included the following changes:

- Restore hiding of the document proxy icon in post editor
- Improve loading of blogs at launch time to avoid a momentarily blank list
- Improve performance when editing posts on blogs with large numbers of authors
- Fix a bug where the titles of blogs could be cut off in the main window
- Fix a bug that prevented selected sort column from being preserved across launches
- Fix a bug that prevented publish status from being interpreted correctly for AtomPub based blogs.

Version 4.4.7 included performance enhancements for Apple Silicon based Macs

Version 4.4.6 included these changes:

- Fix a crashing bug affecting 10.12 and 10.13 versions of macOS

Version 4.4.5 included these changes:

- Fix a bug with MarsEdit 4.4.4 that caused the main window preview colors to be wrong in Dark Mode
- Fix a bug that caused the Rich Editor colors to sometimes not update when switching between Dark and Light Mode
- Fix a bug where Movable Type posts with "more tag" content had the extended content duplicated

Version 4.4.4 included these changes:

- Reduce flickering appearance of main window preview while switching between posts
- Relative HTML Fragments can now be used within preview window e.g. to jump to different tagged parts of a post
- Fix a bug that prevented blogs from being reordered in the blogs list
- Fix a bug where changing preferences caused an open post editor to be activated
- Fix a bug where text after the "More" tag in a Micro.blog post would be stripped
- Fix a bug that caused some HTML elements to be made self-closing when they shouldn't be
- Fix a visual discrepancy in the height of the status bars at bottom of main window

MarsEdit 4.4.3 included the following changes:

- Fix a crashing bug at launch affecting some versions of macOS
- Fix a bug that prevented categories from being added to posts on Hatena, Live Door, and other AtomPub based blogs
- Restore ability to select multiple images at once from "Published" tab of Media Manager
- Fix some bugs that could occur when attempting to publish posts with no blog added

MarsEdit 4.4.2 was a quick update to address a few bugs including some that appeared in 4.4:

- Fix a bug that prevented changes like setting categories from working when editing an existing WordPress post
- Fix a performance issue that could occur when publishing to a blog with a large number of posts
- Fix a bug from 4.4 that caused all blogs to show a disclosure triangle even if they don't support Page entries
- Fix a bug from 4.4 that caused Movable Type tags and slug values to not be displayed
- Fix a crash when uploading images to a blog where authentication is requested

MarsEdit 4.4 added official support for Micro.blog, improves performance of refreshing blogs, and fixes several bugs:

• General Improvements •

- Improved performance for blog refreshing - now shows posts as they load when possible

• Micro.blog Support •

- Now an officially supported publishing system
- Can now edit Page and Post type entries
- Supports sending Draft status posts to server
- Supports downloading entire history of posts

• Bug Fixes *

- Restore ability to type to select items in the media manager icon view
- Don't support New Page menu option for blogs that don't support pages
- Restore drag and drop ability from the "Published" tab of the Media Manager
- Fix a bug that prevented all authors from being listed on blogs with more than 50 authors
- Search now matches substrings found in custom field values of posts
- Ensure the View on Web menu item is enabled whenever a published blog post is selected

If you have a minute, please leave a rating or review in the App Store. It means a lot.
Questions or concerns about the app? Get in touch at support@redsweater.com. Thank you!






MarsEdit 4.2.6
Macbook Pro 2018
Mac OS Mojave 10.14.3


MarsEdit 3では感じなかったテキスト入力のもっさり感が気になります。



あと、以前はUnspilit Postにショートカットキーが設定されていたのに、このバージョンになってからショートカットキーがなくなってしまって、毎回メニューバーから選択をしないといけなくなって不便を感じます。





こんにちは - 日本語で返信できないのが残念です。 Google翻訳を使用しています。

キーボードショートカットが失われたり、テキストの入力が遅くなったりするなど、あなたが考えた問題のいくつかは、私が認識している問題ではありません。 私はそれらを調べ、あなたのためにそれらを解決しようとしたいです。 support@red-sweater.comに電子メールを送ってください。 うまくいけば、Google Translateで問題を解決するのに十分理解できるでしょう。 ありがとうございました!

Original English reply:

Hello - I am sorry I can't reply in Japanese. I am using Google Translate.

Some of the issues you descirbed like losing keyboard shortcuts, or text typing being slow, are not issues that I am aware of. I would like to look into them and try to solve them for you. Will you please email me support@red-sweater.com? Hopefully with Google Translate we can understand enough to solve the problems. Thank you!



画面の立てが狭いMacBook Proだと、記事を書くスペースが全体の2/3しかなく、一番重要な記事を書くのが窮屈になっています。


レビューを書いてくれてありがとう。 申し訳ありませんが、日本語が話せないため、Google Translateで返信しています。 あなたの投稿を書くための領域が狭すぎるか広すぎると思われる場合は、オプションボタンをクリックして横にある「オプション」を隠すことができることを忘れないでください。 "Title"、 "Slug"などは、View - > Hide Slugなどから選択することでほとんど隠すことができます。セクション全体を完全に隠すオプションほど良くないことはわかっていますが、多少の助けになるでしょう。 。 あなたが他のフィードバックを持っているならば私にsupport@red-sweater.comに連絡してください!



1) ver. 3.7.11と比べて動きがモッサリとしてストレスを感ずる。とくに日本語テキストの入力,削除は打鍵に画面表示が追いつかない! これで使い物になるだろうか? 
2) 現バージョン 4.0.3ではエディターでのプレーンテキスト(HTMLテキスト)編集時のエディターがBBEditとTextWranglerしか使えない。TextWrangerはすでにHighSierraには対応してないはずなのにである。
3) Media Manager画面でも,右ペインの入力項目欄が上下に離散していて使いづらい。
4) 投稿/固定ページの入力画面でのToolbar項目にSave as Draftボタンが無くなっている。


Hello - I am sorry that I cannot respond in Japanese. I am going to try my best with Google Translate to understand your feedback, and respond in English in case it helps. If you, or any other users want to follow up with me directly you can email me support@red-sweater.com.

1. I have not heard of any performance problems with Japanese input. I will keep my ears open about this. Particularly if anybody has a specific example I could reproduce the problems with, even as a non-Japanese speaker, I would be grateful.

2. The "External Editor" functionality is now limited to BBEdit and TextWrangler because of "Application Sandboxing" which Apple now requires all Mac App Store apps to embrace. This limits the ability of MarsEdit to interface with most apps, but because BBEdit and TextWrangler are not sandboxed, it still works in that case.

3. It sounds like the reorganization of fields in the Media Manager are annoying to you. I thought I was making an improvement but if you have a specific example of fields that should be grouped together for more ease, please let me know!

4. I removed the "Save as Draft" button because MarsEdit now uses Apple's standard autosave functionality. It should never be necessary to actively save as a draft, but if you want to you can still use the menu item, or corresponding keyboard shortcut.

I hope this helps, and you are able to make some meaning from it even if it is written in English. Thanks so much for giving MarsEdit 4 a try!

Daniel Jalkut - Red Sweater Software founder, and developer of MarsEdit.


デベロッパRed Sweater Softwareは、Appのプライバシーに関する取り組みを以下のように明示しています。これにはデータの取り扱いを含む場合もあります。 詳しくは、デベロッパプライバシーポリシーを参照してください。



  • 診断



Red Sweater Software

macOS 10.12 以降、64ビットプロセッサ



  1. 14-Day Free Trial
  2. "MarsEdit 4 Full License" ¥6,100
  3. Upgrade from MarsEdit 3 ¥3,060


  • ファミリー共有