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  • Features
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New in Version 5

  • Light-Weight, Single-Process, Multi-Threading, and Low Memory Usage
  • Powerful Tab Features
  • Detect All Result dialog
  • Supports More Unicode Characters
  • Application Error Handler Support
  • Other New Features
  • The 64-bit edition available

Light-Weight, Single-Process, Multi-Threading, and Low Memory Usage

EmEditor now runs in one process when multiple files are opened. EmEditor also runs in one process whether using the tab feature or not. Running in one process allows EmEditor to start much faster when multiple files are selected to open, reduce memory usage, and suppress the task bar blinking when activating other documents. Multiple windows now run as multi-threading. Many plug-in commands and macro methods have been added to navigate multiple documents.

In this example below in opening 60 HTML files, the used memory is reduced to 1/50 from the previous version. The time to launch is reduced to 1/15.

Test details: Time to launch and used memory are compared to open 60 HTML files (about 3KB in each size) with the EmEditor command in the Explorer context menu. (Windows XP Home, Compaq Presario SR1010Z, Athlon 64 3200+, 1GB RAM, (1) EmEditor Professional 4.13, (2) EmEditor Professional v5.00, the tab enabled, and other default settings)

Also optimized for speed opening a file with huge characters in a line.

Task Manager_1
Task Manager_1
Task Manager_2
Task Manager_2

Powerful Tab Features

Tabs features are greatly enhanced. Enhanced tab features are stable since all windows now run in a single window in a single process unlike previous versions which only combine windows.

  • Tab or Button style can be selected.
  • Close button (×) on the right-side of the tab can be clicked to close the active document.
  • Window-grouping is supported, and any tab item can be dragged-and-dropped into another group to join or to create a new group.
  • Tab icons and the button width can be customized.
  • The command to run when double-clicking the tab or clicking the tab by the middle mouse button can be customized.
  • The mouse wheel rotation activates another document.
  • The context menu on the tab can be customized.
  • The New tab insert position, Which tab should be activated when a tab is closed, and the Window to open a new document with can be customized.
  • The tab can be arranged by file names, types, modified times or the recently activated order. The Auto arrange can also be specified.
  • The tab bar can be extended to multiple rows or the width can be automatically adjusted when it doesn’t fit in the window.
Customize Tab
Customize Tab
Tab menu
Tab menu

Detect All Result dialog

The new Detect All Result dialog allows you to preview before select an encoding to open a file with.

Detect All Result
Detect All Result

Supports More Unicode Characters

EmEditor now supports Unicode characters outside of the Basic Multilingual Plane (BMP). As long as a supporting font is available, EmEditor can display the CJK Extension B characters. The Unicode character code is now displayed in five hexadecimal digits.

CJK B Extended Characters
CJK B Extended Characters

Application Error Handler Support

Should an application error occur in EmEditor, the error handler will now let you save modified files before it actually terminates. Should an application error occur inside a plug-in, EmEditor will allow you to disable the plug-in without terminating.

Other New Features

New Features

  • The menu bar is now one of the toolbars, and can be moved before or after other toolbars.
  • The Progress dialog box now appears when a huge file is opened, and the operation can be canceled.
  • A Customize command was added to each toolbar context menu.
  • Macros and the plug-in interface have been further extended.

The 64-bit edition available

EmEditor Professional x64 Edition is available now, natively supporting Windows Server 2003 x64 Edition and Windows XP Professional x64 Edition running on the AMD64 or Intel EM64T platform.

EmEditor Professional v5 is available free for EmEditor Professional v4 users. EmEditor Standard v5 is available free for EmEditor Standard v4 users and EmEditor v3 users.

← New in Version 6 New in Version 4 →

  • Text Editing
    • Batch Replace
    • Binary Editing
    • Bracket/Quotation Mark Auto-Complete
    • Clipboard History
    • Compare Documents
    • EditorConfig Support
    • Filter Bar
    • Find and Replace
    • Format Selection
    • Fuzzy Matching
    • Language Server Protocol Support
    • Multiple Selection Editing
      • How to use Vertical Editing
    • Number Range Expression for Find and Replace
    • Regular Expressions
    • Syntax Checker for HTML, CSS, JSON, XML
    • Syntax Highlighting
  • Powerful CSV Tools
    • Autofill
    • Combine Lines
    • Combine/Split Columns
    • CSV Converter
    • Custom CSV formats
    • Delete Duplicate Lines
    • Extract Columns
    • Extract Frequent Strings
    • Flash Fill
    • Freeze header
    • Insert lines/columns
    • Join CSV
    • Manage Columns
    • Numbering
    • Pivot table
    • Sort
    • Transpose
  • Large File Support
    • Fast Processing of Large Files
    • Large File Controller
    • Large Files up to 16 TB
    • Lightweight, multithreaded design
    • Split and Combine Files
  • User Experience
    • Configurations
    • Customizable Interface
    • Customizable toolbars
    • Document Groups
    • International language and locale support
    • Markers
    • Quick Launch
    • Split window
    • Start Window
    • Tabbed Design
    • Workspace Memory
  • Extensibility
    • AI Assisted Writing
    • AI Toolbar
    • Chat with AI
    • External Tools
    • Plug-ins
      • CommitList Plug-in
      • Explorer Plug-in
      • HTML Bar Plug-in
      • Open Documents Plug-in
      • Projects Plug-in
      • Search Plug-in
      • Snippets Plug-in
        • How to Use Zen Coding
      • Web Preview Plug-in
      • Word Complete Plug-in
      • Word Count Plug-in
    • Scriptable Macros
  • More Features
    • Base64
    • Bookmarks
    • Character Check
    • Character Code Value
    • Customer support
    • Drag and Drop
    • Error Handler and Crash Recovery
    • Fast 64-bit Build
    • Full Screen View
    • Grab Text
    • Half-width/Full-width conversion
    • HTML Character References
    • Jump
    • Markdown Editor
    • Marks
    • Matching Tag Highlight
    • Messaging (plug-in)
    • MIME Encoded-Word
    • Multiple File Encoding Conversions
    • Narrowing
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    • Outline
    • Percent-encoding
    • Pin to List
    • Portability Options
    • Privacy-first
    • Quick Start
    • Save to Protected Folder
    • Spellcheck
    • Status Window
    • Tooltip to show HTML/XML character references
    • Unicode Normalization
    • Unicode Support
    • Universal Character Name
    • Uppercase/Lowercase conversion
    • Wildcard Support
    • Windows 11/10 Compatibility
    • CSV
  • History
    • New in Version 26.2
    • New in Version 26.1
    • New in Version 26.0
    • New in Version 25.4
    • New in Version 25.3
    • New in Version 25.2
    • New in Version 25.1
    • New in Version 25.0
    • New in Version 24.5
    • New in Version 24.4
    • New in Version 24.3
    • New in Version 24.2
    • New in Version 24.1
    • New in Version 24.0
    • New in Version 23.1
    • New in Version 23.0
    • New in Version 22.5
    • New in Version 22.4
    • New in Version 22.3
    • New in Version 22.2
    • New in Version 22.1
    • New in Version 22.0
    • New in Version 21.9
    • New in Version 21.8
    • New in Version 21.7
    • New in Version 21.6
    • New in Version 21.5
    • New in Version 21.4
    • New in Version 21.3
    • New in Version 21.2
    • New in Version 21.1
    • New in Version 21.0
    • New in Version 20.9
    • New in Version 20.8
    • New in Version 20.7
    • New in Version 20.6
    • New in Version 20.5
    • New in Version 20.4
    • New in Version 20.3
    • New in Version 20.2
    • New in Version 20.1
    • New in Version 20.0
    • New in Version 19.9
    • New in Version 19.8
    • New in Version 19.7
    • New in Version 19.6
    • New in Version 19.5
    • New in Version 19.4
    • New in Version 19.3
    • New in Version 19.2
    • New in Version 19.1
    • New in Version 19.0
    • New in Version 18.9
    • New in Version 18.8
    • New in Version 18.7
    • New in Version 18.6
    • New in Version 18.5
    • New in Version 18.4
    • New in Version 18.3
    • New in Version 18.2
    • New in Version 18.1
    • New in Version 18.0
    • New in Version 17.9
    • New in Version 17.8
    • New in Version 17.7
    • New in Version 17.6
    • New in Version 17.5
    • New in Version 17.4
    • New in Version 17.3
    • New in Version 17.2
    • New in Version 17.1
    • New in Version 17.0
    • New in Version 16.9
    • New in Version 16.8
    • New in Version 16.7
    • New in Version 16.6
    • New in Version 16.5
    • New in Version 16.4
    • New in Version 16.3
    • New in Version 16.2
    • New in Version 16.1
    • New in Version 16.0
    • New in Version 15.9
    • New in Version 15.8
    • New in Version 15.7
    • New in Version 15.6
    • New in Version 15.5
    • New in Version 15.4
    • New in Version 15.3
    • New in Version 15.2
    • New in Version 15.1
    • New in Version 15.0
    • New in Version 14.9
    • New in Version 14.8
    • New in Version 14.7
    • New in Version 14.6
    • New in Version 14
    • New in Version 13
    • New in Version 12
    • New in Version 11
    • New in Version 10
    • New in Version 9
    • New in Version 8
    • New in Version 7
    • New in Version 6
    • New in Version 5
    • New in Version 4
    • Basic Features
  • EmEditor Free
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