Subtitle converter and timing fixer
Convert SRT and WebVTT subtitles, shift cue times and download a validated subtitle file.
Bookmark this page
Keep this page handy for next time.
- On a computer
- Press Ctrl + D, or Command + D on a Mac.
- On a phone or tablet
- Open your browser's menu or Share menu and look for Add Bookmark, Bookmark or Add to favourites.
A bookmark saves the page link. Save any tool results separately.
Processed on your device
How to use this tool
- Paste UTF-8 SRT or WebVTT text, or open a local text file.
- Choose the output format and a positive or negative shift in seconds.
- Download the result. Cues that would start before zero are rejected.
Things to know
- Up to 5000 cues and 1 MiB. Basic timed text only; styling tags, WebVTT cue settings, regions and notes are rejected instead of silently discarded.
- Cue overlaps are preserved and reported; this tool does not synchronise against audio automatically.
- Processing and results stay on this device. Inputs are bounded; no work is saved between visits.
You might also need
More in audio & videoMake a GIF from images
Combine an ordered set of still images into an animated GIF with timing and looping controls.
Audio Trimmer
Export a selected time range from an audio file.
Video Trimmer
Re-encode a selected time range into an MP4 clip.
Audio Converter
Convert local audio into MP3, WAV, FLAC, AAC or Ogg.
Audio Joiner
Normalize audio formats and concatenate tracks in selected file order.
Audio Reverser
Reverse the order of audio samples and export WAV.
Audio Speed & Pitch Changer
Change playback speed and pitch independently, then export WAV.
Audio Volume Normalizer
Apply loudness normalization or a fixed gain to an audio track.
Audio Waveform Viewer
Render an audio amplitude waveform and report duration and channels.