SRT to VTT Converter
SRT to VTT Converter turns SubRip caption files into WebVTT text without uploading your subtitles to a server.
Paste or choose an .srt file, review parse warnings, then copy or download a standards-friendly .vtt file for web video, course platforms, and caption workflows.
Paste SRT subtitles
Choose an SRT file
Optional file input. The text is read locally and placed in the editor above before conversion.
Convert SRT Captions Into Valid WebVTT
What The Converter Should Change
The core conversion is deterministic: add the WEBVTT header, remove numeric-only SRT cue indexes from the output, and convert comma millisecond separators in SRT timestamps into WebVTT periods.
The tool should preserve caption text, speaker labels, bracketed sound cues, blank-line cue boundaries, and multiline subtitles while reporting anything that cannot be parsed cleanly.
- Input timestamp example: 00:01:02,500 --> 00:01:05,250
- Output timestamp example: 00:01:02.500 --> 00:01:05.250
- Preserve cue order unless the user explicitly chooses a repair option
- Keep output as plain UTF-8 text and offer a .vtt download
Useful Validation Results
A good subtitle converter should not only produce a file; it should explain whether the caption structure looks usable before someone uploads it to a video platform.
Validation messages should be concrete enough for automated tests and for users fixing caption files on a phone or laptop.
- Cue count parsed from the SRT input
- Output cue count after conversion
- Warnings for missing numeric cue IDs, malformed timestamps, reversed start and end times, empty cue text, duplicate cue blocks, and non-monotonic start times
- A pass/fail WebVTT signature check that confirms the output begins with WEBVTT
- A downloadable filename ending in .vtt
Browser-Local Workflow
This tool fits TextFaker because subtitles are small text files and can be converted entirely with FileReader, textarea input, Blob downloads, and deterministic parsing in the browser.
A mobile-friendly page should support paste-first use, file upload, one-tap copy, download, and clear warnings without requiring video preview or server processing.
- No server upload is needed for normal .srt text files
- Works with pasted captions when the user does not have easy file picker access
- Can show the generated MIME intent as text/vtt
- Can expose copyable converted text for LMS, HTML video, and creator workflows
Compare SRT to VTT Converter
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