How to create an SRT file
- Paste what is said in the video into the box above, one subtitle per line (long lines are split automatically).
- Click Load your video or audio. The file opens in your browser; nothing is uploaded.
- Press play and tap Space whenever the next line begins. Made a mistake? Backspace undoes the last mark.
- Watch the preview with subtitles on the player, then click Download SRT.
Tips for good subtitles
- Keep subtitles to two lines of about 42 characters — the converter wraps longer lines for you.
- Tap slightly before the speaker starts; viewers read ahead.
- Need a rough version fast? Without tapping, the right-hand box already contains subtitles timed by reading speed.
- For YouTube, upload the SRT in YouTube Studio → Subtitles → Upload file → With timing.
Frequently asked questions
Which video formats can I load?
Anything your browser can play: MP4 (H.264), WebM, MOV in Safari, MP3, M4A and WAV. MKV and some codecs only play in some browsers.
Can it generate subtitles from speech automatically?
No — this tool times a script you already have. For a transcript from audio, use a transcription service first, then convert or time its text here.
How do I fix subtitles that are all a bit late?
Use Shift all times by with a negative number of seconds, for example -0.5, or the subtitle sync tool to match a line to your video.
Are my files uploaded?
No. Text, subtitle files and videos are processed by your browser on your own computer. Nothing is sent to a server.