SRT Subtitle Timing & VTT Converter
Batch-adjust subtitle timestamps in the browser with an editable timing offset and speed factor.
Try the tool
Your inputs are processed locally by this tool and are not intentionally uploaded. The website's existing Google Analytics tag may still collect ordinary visit/interaction metadata; do not enter secrets in a tool on a shared device.
How this tool works
Supports ordinary SRT timecodes and multiline captions. Offset is applied after the timing multiplier, and all cues must have increasing, non-negative timestamps. Advanced SRT positioning, overlapping cue resolution and automatic speech recognition are not included. No file is uploaded.
Practical tip
Use a negative offset to bring subtitles earlier, or a multiplier to account for a systematic timing drift. Always proofread text and retest sync in the target video.
This free tool is informational, with no warranty or professional advice. Check important outputs independently.
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