Aegisub vs Jubler
Aegisub
aegisub.orgJubler
jubler.orgSide by side
| Figure | Aegisub | Jubler |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Plans published | 1 | 2 |
| Spec score · Subtitle Software | 8.4 (#8) | 8.6 (#5) |
| Spec score · Subtitle tools | 7.8 (#18) | 8.9 (#4) |
| Automation | The Automation module supports Lua scripts that provide macros and export filters. | The project provides command-line tools for batch processing and terminal workflows. |
| Free plan | Yes | Yes |
| Privacy | The optional update checker sends anonymous operating-environment information, including IP address, Aegisub version, operating system, and interface language; users can avoid this collection by not enabling the checker. | Its privacy policy says no user data is collected and no usage information is sent to a service. |
| Purpose | Aegisub is a free, cross-platform open-source tool for creating and modifying subtitles. | Jubler is a free, open source editor for creating, editing, and converting text-based subtitles. |
| SRT export | Yes | Yes |
| Subtitle formats | It supports importing and exporting several subtitle formats, including MPEG-4 Timed Text and MicroDVD. | The current project supports more than 20 formats, including SRT, ASS/SSA, WebVTT, MicroDVD, SubViewer, MPL2, TTML, DFXP, ITT and YouTube subtitles. |
| Support | The FAQ recommends the Aegisub Discord server and IRC channel for Aegisub questions and the bug tracker for bug reports. | The contact page directs users to GitHub for issues and support. |
| Subtitle translation | Yes | Translation mode supports parent and child subtitle editors, with Azure Translator support for machine translation. |
| Video preview | Its video mode provides a live preview of subtitles as they are edited. | Video, frame and audio-waveform preview are provided through VLC/libvlc in the 10.0 release. |
| VTT export | No | Yes |
Plans
In their own words
Aegisub
Aegisub is a free, open-source tool for creating and modifying subtitles on Linux, macOS, and Windows. Its audio interface includes waveform and spectrum views for timing subtitles, while video mode previews edits as they are made. Visual controls on the video frame let users position, rotate, scale, and clip subtitles. Aegisub imports and exports several subtitle formats, including MPEG-4 Timed Text and MicroDVD, and it supports subtitle translation. Editing aids include a translation assistant, spell checking, a thesaurus, syntax highlighting, and macros. The Automation module runs Lua scripts for macros and export filters. Multi-level undo and redo, autosaving, backups, and emergency recovery saving are included. Direct saving to SRT is blocked when override tags would lose information, though the Export dialog can export to SRT. Aegisub does not create DVD subtitles directly; its FAQ describes using an external program to convert SSA to VOBSubs. The optional update checker sends anonymous operating-environment details, including an IP address, and can be left disabled. Version 3.5.0 is listed for download.
Jubler
Jubler is a free, open-source desktop editor for creating, revising and converting text-based subtitles. It runs on Linux, macOS and Windows and handles more than 20 subtitle formats, including SRT, ASS/SSA, WebVTT, TTML, ITT, DFXP and YouTube subtitles. Users can shift timing, convert frame rates, split or join entries and files, check spelling, and search and replace with regular expressions. A timeline with draggable subtitle blocks supports two-point synchronization. With VLC, Jubler can preview video and frames, show audio waveforms and let users edit subtitles during playback. Quality tools include configurable validation rules and TED guidelines checks. Translation mode supports Azure Translator, and command-line tools are available for batch work and automation. Downloads include builds for Apple Silicon and Intel Macs, Windows, Linux x86_64 and arm64, as well as a generic Java version. VLC is required for video preview and audio waveforms; ASpell is suggested for spell checking. Jubler is licensed under AGPL-3.0.