Highlights on CotEditor 3.5

Brand-new toolbar
CotEditor now has more modern toolbar buttons that match for the latest macOS.
Bring your cursor up to the editor center
The overscrolling feature allows you to scroll past the bottom of the document.
Highlight selected words
Editor finds the same words to the selected one in the document automatically and highlights them.
Optimized Window preferences pane
Setting options in the Window pane were reduced to simplify the preferences and to let the application behave more properly for a macOS application.

What's New on CotEditor 3.5.0


cf. Changes from 3.5.0-rc.

New Features

  • New toolbar icons.
  • Highlight the same substrings of the selection automatically (Customize the behavior in General preferences pane).
  • New option to allow overscrolling (Customize the behavior in Window preferences pane).
  • Enable to change the tab width of a specific document to a desired number.
  • Let the input fields in the find panel accept text scaling commands, such as “Bigger”, “Smaller” and “Reset to Default”.


  • Add command “Select All Find Matches” in Find menu.
  • Improve the editor's scrolling behavior to scroll along the predominant axis.
  • Add menu item to toggle the visibility of the sidebar inspector.
  • Remove some setting options for windows such as window size and visibilities of document inspector and status bar from Window preferences pane.
    • From now on, the latest change to a window will be inherited to future windows just like other standard Cocoa applications.
  • Remove “length” display in the status bar.
  • Remove feature to change only the frontmost editor's opacity temporary.
    • From this, view opacity property on AppleScript is also deprecated.
  • Keep the cursor position as possible after the editor content is updated to the latest version modified by another process.
  • Display current user's system-wide setting for window tabbing in the menu on the Window pane.
  • Optimize the performance of character counting.
  • Improve general stability of the print operation.
  • Optimize auto URL detection with paste to a large document.
  • Update Python syntax style for Python 3.7.
  • Update Swift syntax style for Swift 4.2 and some improvements.
  • trivial Update some Japanese localization.
  • trivial Update editor opacity sample tips.
  • trivial non-AppStore ver.: Update Sparkle framework.


  • Fix an unlocalized text.

previous release notes

The updater's “Install” button works only on CotEditor 3.3.0 and later.
To update from an earlier version, download archive from and install it manually.