Subtitle & Caption Generator
Generate SRT or VTT subtitle tracks, edit timecodes, and bake styled open captions into your MP4 video.
Choose video or audio to generate subtitles
Drop a file here, click to browse, or paste one.
MP4, MOV, WebM, MP3, WAV
Your file is opened by this page and processed locally on your device. It is not uploaded.
About
Make an SRT or VTT subtitle file for your video with this free online subtitle generator. Drop in a video or audio file, and the page marks where speech starts and stops, so you get a timed line for each part of the recording. Each line starts as placeholder text that you replace with your own words.
You type the words yourself. Every line has a start time, an end time and its text, and you can change any of them, delete a line, or add a new one with Add Cue at the current playback time. The line that matches the picture is shown over the video as it plays, so you can check the timing before you export.
Download the result as .SRT or .VTT with the buttons under Export Formats. The file is named after your video. The file is opened and read on your device, and it is not uploaded to a server.
How to use the Subtitle & Caption Generator
- 1
Choose a file
Drop an MP4, MOV, WebM, MP3 or WAV file on the page, or click to pick one. The tool reads the file and marks the speech in it.
- 2
Write the lines
Click each text box and replace the placeholder with the words for that moment. Use the start and end boxes, in seconds, to fix the timing. Click Add Cue to add a line at the current playback time, or the trash icon to remove one.
- 3
Check the timing
Press play and watch the subtitle appear over the video. Adjust any line that starts or ends too early or too late.
- 4
Download the file
Under Export Formats, click Download .SRT or Download .VTT. The file is saved to your computer.
What people use it for
Captions for a short clip
Type captions for a social video or a short clip, then keep the .SRT file with the video so the text stays with it.
Subtitles for a course or training video
Write a line for each point in a lesson and export a .VTT file for the web player on your course page.
Readable text for a recording
Give viewers the words for each part of an interview or talk, timed to the speech.
Questions
Is the subtitle generator free?
Yes. The tool is free to use and does not ask you to sign up.
Does it write the subtitles for me?
No. The tool marks where speech starts and stops and adds a line for each part, but the lines begin with placeholder text such as Subtitle cue 1. You type the words for each line.
What is the difference between SRT and VTT?
Both are plain text files with timed lines. SRT uses a number for each line and a comma before the milliseconds, while VTT starts with a WEBVTT header and uses a dot. Use the format that your video player or upload service asks for.
Can I change the timing of a subtitle?
Yes. Change the start and end numbers, in seconds, next to each line. The numbers move in steps of 0.1 second, and you can type any value.
Are my videos uploaded?
No. The file is opened and read on your device, and the subtitle file is made in your browser. Nothing is sent to a server.
Can I make subtitles from an audio file?
Yes. MP3 and WAV files can be loaded as well as video, and the speech in them is marked the same way.