Large File Support

EmEditor is optimized for handling large files, the kind of files that other editors just can’t handle. Files up to 16 TB can be opened in full using only a little bit of memory. For files even larger than that, EmEditor uses the Large File Controller to moderate how the program handles huge files.

Edit Files up to 16 TB

EmEditor opens up to 16 TB or 1,099 billion lines – whichever is reached first, when opening a file – with only a little memory.

Large File Controller

The Large File Controller enables you to view and edit files larger than 16 TB by opening up one section of the file at a time. You can control which and how many lines are displayed, and view how much memory EmEditor is using.

Split/Combine Files

Easily manipulate your large files with the Split and Combine Files features, which allow you to cut up and put together files for quick and easy editing.

Fast Processing of Large Files

EmEditor is optimized for processing large files.

Multithreaded design

The key to EmEditor’s large file capabilities is its single-process, multithreaded design, which allows EmEditor to execute powerful functionality without compromising speed or taking up too much memory.