How it works
Complete the job in three clear steps
- Choose or paste an SRT or VTT file, or pasted caption text.
- Review the timing and create an edited SRT or VTT file.
- Preview or download the result before closing the page.
Private Lucaden subtitle tool
SRT & VTT Subtitle Editor
Edit caption text and millisecond timing in a structured SRT and WebVTT workspace.
Free to use Your subtitle text and files stay in this browser and are not uploaded to Lucaden.
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Important
Check the result before relying on it
Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.
Practical details
What this Lucaden tool does
Edit caption text and millisecond timing in a structured SRT and WebVTT workspace.
The parser normalizes SubRip and WebVTT cues into millisecond timestamps. Lucaden then serializes a new file instead of modifying the original.
Included capabilities
- Cue-by-cue timing fields
- Editable multiline text
- Add and remove cues
- SRT and WebVTT export
Useful for
- Correct transcription mistakes
- Retiming individual captions
- Create a caption track
- Convert a draft transcript into cues
Questions
About this tool
Does this translate captions?
No. It preserves the text you enter and provides timing and format controls only.
Can I preview against a video?
Yes. Choose a local video in the editor to preview the current cues as a WebVTT track.
Open-source foundations
Built transparently
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.