Which files can I upload, is there a file size limit?

MP4, MPEG, MOV (QuickTime), AVI and MKV videos, as well as MP3 and WAV audio files, are supported. The file size limit is 500 MB.

In which formats can I get the subtitle?

You can download the generated subtitle as an SRT or VTT file, and if you want, you can also create an MP4 video with the subtitle embedded using "Burn into Video".

Can I edit the generated subtitle?

Yes. The subtitle segments are listed; you can make corrections by clicking on the text, change the start and end time of each segment, and add new segments.

Can I upload my own SRT/VTT file?

No, this tool generates the subtitle automatically with artificial intelligence; there is no option to upload a ready-made subtitle file. You can, however, edit the generated subtitle as described above.

Can I change the subtitle's font, color or position?

No, the subtitle style (font, color, background, position) is fixed and cannot be customized. If you want to choose the font, color and position, you can use the "Burned subtitle style" settings in the Multi-Subtitle Video tool.

Add Subtitles to Video Online Free

Uses an AI model. Runs entirely in browser — your video is never uploaded to a server.

Drop video here or click to browse

MP4, WEBM, MOV, MKV…

Auto-deleted in 7 days

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Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload Video

Upload the video file you want to add subtitles to.

Select Language

Tell the AI which language the speech is in.

Generate Subtitles with AI

Click "Generate Subtitles". Our AI engine transcribes the speech.

Download (SRT/VTT)

Download the subtitle file as SRT or VTT, or embed it into the video.

Frequently asked questions

No. The speech recognition model (Whisper) runs in your browser, and your video is not sent to a server. Because the model is downloaded on first use, the first process may take a little longer.

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