How to Add Subtitles to a Video (Auto, Free)
Most people watch video on mute, so subtitles are no longer optional — they boost watch time, accessibility and reach. The Video Caption Generator transcribes your video automatically with AI, lets you fix the text, and exports a standard SRT or VTT file you can upload anywhere.
Why subtitles matter
A large share of social video is watched without sound, and captions keep viewers watching, make content accessible to deaf and hard-of-hearing audiences, and help search engines understand your video. Accurate subtitles can measurably lift completion rates.
How to auto-generate subtitles
- Open the Video Caption Generator and add your video. 2. The audio is extracted in your browser and transcribed by AI with timestamps. 3. Edit any lines that need fixing. 4. Export an SRT or VTT file. For burned-in animated captions instead, use the Reel & Shorts Caption Generator.
SRT vs VTT, and what to do next
SRT is the most widely supported subtitle format and uploads directly to YouTube and most editors; VTT is the web standard used in HTML5 video. Need them in another language? Run the file through the Subtitle Translator. To reformat or retime, use the Subtitle Converter.
Try the tool from this guide
Video Caption Generator
Auto-generate subtitles for any video.
Open Video Caption GeneratorFrequently asked questions
How do I add subtitles to a video for free?
Open the Video Caption Generator, add your video, let the AI transcribe it, edit the text, and export an SRT or VTT file to upload with your video.
What's the difference between SRT and VTT?
Both store timed captions. SRT is the most widely supported and works with YouTube and most editors; VTT is the HTML5 web standard.
Can it burn captions into the video?
This tool exports subtitle files. For captions burned directly into the video frames with animated styles, use the Reel & Shorts Caption Generator.
Is my video uploaded?
The video stays in your browser; only a small compressed audio clip is sent securely for transcription and is never stored.
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