Free Subtitle Tools
Convert, sync, clean up, edit, and merge subtitle files — right in your browser. No signup, no uploads, no watermarks: every tool below processes your files locally on your device.
- Online Subtitle Editor Edit subtitles against your video, transcribe, translate, and burn in captions.
- Subtitle Converter Convert between SRT, VTT, SBV, and plain text in your browser.
- VTT to SRT Converter Turn WebVTT captions into SubRip .srt files instantly.
- SRT to VTT Converter Turn SubRip .srt files into web-ready WebVTT captions.
- SRT to Text Strip timestamps and numbering to get a clean transcript.
- Sync Subtitles Shift every subtitle earlier or later with millisecond precision.
- SRT Editor Edit subtitle text and timing in a simple table, no signup.
- Merge SRT Files Combine two SRT files into one, renumbered and retimed.
The full Captioner editor
When a quick utility is not enough: transcribe video and audio with AI in 100+ languages, edit subtitles against the video, translate them, and render styled captions into the video itself.
Try the Captioner editor — freeFrequently asked questions
- Are these subtitle tools really free?
- Yes. Every tool on this page runs entirely in your browser, so there are no accounts, quotas, or watermarks. The full Captioner editor has a free tier too.
- Are my files uploaded to a server?
- No. All processing happens locally on your device with JavaScript. Files never leave your computer or phone, which also makes the tools fast and private.
- Which subtitle formats are supported?
- SRT (SubRip), VTT (WebVTT), and SBV (YouTube), plus plain-text transcript output. All tools are UTF-8 native and handle Chinese, Cantonese, Japanese, Korean, and other languages correctly.
- What if I need transcription, translation, or burned-in captions?
- That is what the full Captioner editor does: AI transcription in 100+ languages, subtitle editing against the video, translation, and styled captions rendered into the video. You can start free.