How accurate is the automatic transcription?

Accuracy depends on audio clarity. Clean recordings with a single speaker in a quiet environment yield the best results. Always review auto-generated captions before publishing.

Do I have to burn the subtitles into the video permanently?

No. You can choose to hardcode captions into the video file or download them as a separate SRT/VTT file to attach externally on your platform.

Which video formats are supported?

The tool supports MP4, MOV, and AVI. For other formats, use our video converter to prepare a compatible file first.

Are my videos stored on your servers?

Videos are held on the server only during processing and deleted automatically once you download the result. Your content is never shared with third parties.

Is the Add Subtitle tool free?

Core subtitle adding is free. Longer videos, batch processing, or automatic transcription at scale may require a premium plan.

Can I use this on my phone?

Yes, the tool works in mobile browsers. For large video files or detailed caption editing, a desktop browser offers a more comfortable experience.

Can I add subtitles in a language different from the video's audio?

Absolutely. You can upload or type subtitles in any language regardless of what is spoken in the video, making it easy to localize content for international audiences.

Subtitle generator — Free Online

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

256-bit SSL

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.

Auto Caption Generator

📖 How to Use