Version3.2(as of 1/11/2023)
PlatformsWindows, Mac, Linux
LicenseOpen Source
Go to Website
Rating:3.5  |  24 Votes

Main Features

  • Edit and style subtitles for audio and video
  • Real-time video preview capabilities
  • Available in many languages, including English, Spanish, Japanese, and Russian

Software Overview

Screenshot of Aegisub 3.2
Screenshot of Aegisub 3.2

Aegisub is an open-source, cross-platform program used to create and edit subtitles. It is a successor to SubStation Alpha and Sabbu. By default, it saves subtitles in the Advanced Substation Alpha (.ASS) format. However, Aegisub can load and save subtitles in several common formats.

The program is a favorite among fansubbers, who are fans that create unofficial subtitles for anime and other types of TV shows and movies. Karaoke enthusiasts also use Aegisub to create subtitles for their favorite songs. The program includes a robust set of features that let users time, edit, style, translate, typeset, and add effects to subtitles. Users can also quality-check their subtitles by playing them alongside their corresponding video or audio in Aegisub.


There aren't many subtitle editors available, but even if there were, Aegisub would still top the list. The program's suite of editing, styling, and testing tools make it the best subtitle editor around.

Primary File Type

ass icon.ASSAegisub Advanced SubStation Alpha File

Supported File Types

ExtensionFile Type
.ASSAegisub Advanced SubStation Alpha File
.SRTSubRip Subtitle File
.SSASub Station Alpha Subtitle File
.STYAegisub Subtitle Styles File
.SUBMicroDVD Subtitle File
.TXTPlain Text File
Updated 1/11/2023