Everything is free while we build.
AllSubConverter is in open beta. Every tool, every format, every feature — completely free while we build. No account, no credit card, no watermarks.
Free During Beta
Every feature, no card required
Free during beta
- Convert between 40+ subtitle formats (SRT, VTT, ASS, SSA, LRC, TTML, SCC, STL, SMI…)
- Batch processing — convert, clean, or sync many files at once
- AI translation with your own API key
- Subtitle cleaning, syncing, merging and splitting
- Quality reports with CPS, overlaps and timing diagnostics
- Export to PDF, TXT, LRC and more
- Session history, snapshots and auto-save
- 100% local processing — your files never leave your browser
After beta, we may introduce optional paid features for users who need more advanced workflows, automation, and professional capabilities. The core subtitle tools will remain accessible to everyone.
100% Private
All processing happens locally in your browser. Files never leave your device.
Blazing Fast
No servers to wait on. Conversions are instant and work offline.
AI Powered
Translate, rewrite and annotate subtitles with smart AI tools.
40+ Formats
Support for every major subtitle format and variation.
Platform Pipeline
Convert, clean, sync and export in one connected workspace.
Always Improving
New tools and formats ship regularly during beta.