Jubler
Subtitle editor for creating, editing and syncing subtitles
Free · Open sourceLatest versionWindows
About Jubler
Jubler is a free and open source subtitle editor for creating, editing, and converting text-based subtitles. It provides tools for authoring new subtitles and refining existing ones with video preview, quality validation, and extensive format support.
Jubler is written in C++ with Qt 6, and uses libmpv for video and audio. Up to version 10.0.0 it was a Java application; that code lives on the `java` (opens in a new tab) branch.
(C) 2005-2026 Panayotis Katsaloulis panayotis@panayotis.com
Licensed under the GNU Affero General Public License v3 (AGPL-3.0)
Features
Subtitle Formats
- 20+ formats supported including SubRip (SRT), Advanced SubStation Alpha (ASS/SSA), WebVTT, MicroDVD, SubViewer, MPL2, Spruce DVD Maestro, TTML, DFXP, ITT, QuickTime Texttrack, Adobe Encore and YouTube subtitles
- Encoding detection on every load, with UTF-8, UTF-16 and the legacy code pages
- Character and paragraph-level styling for formats that support it (ASS/SSA, SRT)
- Format conversion between all supported types
- Import of the text subtitles embedded in video files
Video Integration
- mpv-based video preview with hardware decoding, audio waveform and video key frames
- Real-time subtitle editing while watching video
- Interactive timeline with draggable subtitle blocks
- Two-point synchronization for timing alignment
- Play the current subtitle straight from the player
Editing Tools
- Time manipulation - shift, frame rate conversion, round timing
- Content operations - split/join entries, split/join files
- Text processing - spell checker, find & replace with regex support
- Smart time fixer with overlap detection and resolution
- Translation mode for side-by-side subtitle translation
- Undo/redo with full history
- Auto-save and recovery
Quality Control
- Subtitle validation with configurable quality rules
- CPS (characters-per-second) metrics displayed in subtitle table
- TED guidelines compliance checking
- Color-coded validation to highlight issues
- Statistics and analysis tools
Subtitles and Languages
- Subtitle search and download from OpenSubtitles, SubDL and SubSource, with video-hash matching
- Hunspell spell checker with a bundled English dictionary and other languages downloaded on demand
- Azure Translator support for automated translation
User Interface
- HiDPI support with adjustable scaling
- Dark theme available
- Customizable keyboard shortcuts
- Multi-language interface
Description adapted from the project README.
- Version
- 10.0.0
- Updated
- Jul 1, 2026
- Size
- 37 MB
- License
- GNU AGPL 3.0
Open source details
- Source code
- Exact source for v10.0.0
- Released
- Jul 1, 2026
- GitHub stars
- 187
- Website
- jubler.org
Community project. Help and bug reports go to the maintainers on GitHub; AppsXi does not provide support for this app.
License
CopyleftGNU AGPL 3.0
Use and change it freely; anything built from it must be shared under the same license, with its source. That includes running a changed copy as a network service.
Read the full licenseHow this app was checked
AppsXi checks every version before it is listed.
Signed by SignPath Foundation
Certificate from GlobalSign GCC R45 CodeSigning CA 2020,O=GlobalSign nv-sa,C=BE
Signature is timestamped
File matches the hash GitHub published
SHA-256 cf8729148e2ce4a184cf5e0d953a43e20ca514cb7e3e2bde17a8a0a6bcbaa1b2
No malware found
ClamAV 1.5.4 on Oct 14, 2026
Install and behavior test in a virtual machine: not run yet
Coming soon for all listings.
Versions
10.0.0checked
Checked Oct 14, 2026 · Windows
EXE · 37 MB
Questions about Jubler
Is Jubler free?
Yes. Jubler is free and open source under the GNU AGPL 3.0. AppsXi lists the maintainers' official release and does not charge for it.
Is Jubler safe to download?
AppsXi downloads every version of Jubler from the maintainers' official GitHub release and checks it before it is listed. For version 10.0.0 (checked Oct 14, 2026), the Windows download is Authenticode signed, each file matches the checksum GitHub publishes for the release, byte for byte and a malware scan found nothing.
Who makes Jubler?
Jubler is an open source project by Panayotis on GitHub (teras/Jubler). Help and bug reports go to its maintainers there.
Reviews
No reviews yet. Anyone who downloads it from AppsXi while signed in can review it a day later.
Something wrong with this app? Report a problem. Maintainer? Claim this listing or ask us to remove it.
