AI subtitles in your browser
Upload your file and the AI generates accurate, timed subtitles in seconds — no app, no account, no credit card. Works on any device with a browser.
Limited Time
50% off all plans
01d06h53m02s
AI-powered — free, no account required
AI Subtitle Generator in 39 Languages
Upload any audio or video file. AI transcribes it and downloads an SRT subtitle file in seconds — no account required.
1. Upload your file2. Select language3. SRT downloads automatically
MP3, MP4, WAV, M4A, FLAC, OGG, or WebM · Max 25 MB · No account required
Match the spoken language for transcription — or pick a different language to translate the subtitles automatically.
Drag and drop your file here, or click to upload
MP3, MP4, WAV, M4A, FLAC, OGG, WebM · Max 25 MB
Why use this AI subtitle generator
There are plenty of AI subtitle generators online. Most of them require an account, add a watermark, or only support English. This one doesn't.
57 language AI subtitle support
The AI subtitle engine supports 57 languages — Arabic, Hindi, Urdu, Indonesian, Thai, Vietnamese, Japanese, Korean, Swahili, and many more that most tools struggle with.
Free AI subtitle generation
The web tool is completely free. For Premiere Pro editors, CaptionX includes 10 free AI subtitle generations per month — styled, animated, and placed directly in your timeline.
For Premiere Pro editors
AI subtitles directly in your timeline
CaptionX is a Premiere Pro extension panel that runs AI subtitle generation right inside your editor — no SRT import, no manual sync. Styled, animated, and ready to export. 10 free generations per month, no credit card required.
Free plan includes
- 10 AI subtitle generations/month
- 57+ language AI transcription
- Styled, animated captions
- SRT export for YouTube
- No credit card required
Frequently asked questions
What is an AI subtitle generator?
An AI subtitle generator uses artificial intelligence to automatically transcribe audio and produce timed subtitles. Upload a file above and the AI generates an SRT in seconds — no account required.
Is there a free AI subtitle generator?
Yes. The tool on this page is completely free. For Premiere Pro editors, CaptionX includes 10 free AI subtitle generations per month — no credit card required.
How does the AI subtitle generator work?
Upload your audio or video file, select the spoken language, and click Generate Subtitles. The AI analyses your audio, timestamps the speech, and downloads an SRT automatically.
What languages does the AI subtitle generator support?
57 languages including English, Spanish, Portuguese, French, Arabic, Hindi, Urdu, Indonesian, Thai, Vietnamese, Japanese, Korean, Swahili, and many more.
How accurate are AI-generated subtitles?
For clear audio with minimal background noise, the AI subtitle generator is highly accurate. Review and correct the SRT before uploading to YouTube or your editor.
Can I use an AI subtitle generator for YouTube?
Yes. Upload the downloaded SRT to YouTube Studio as a manual subtitle track — more accurate than YouTube's built-in auto-captions.
Generate AI subtitles in 57 languages
Upload your file above for an instant SRT, or get CaptionX for Premiere Pro and generate AI subtitles directly in your timeline.