Auto Subtitle Generator

Convert video and audio files into accurate, editable subtitles online for free. No signup, no watermark, powered by open-source speech recognition.

Upload media to generate subtitles

Drag and drop your file here

Supports common video and audio formats up to 1 GB

Frequently Asked Questions

Is this auto subtitle generator free?

Yes, it is 100% free with no registration required and no limits on conversion output quality. The only limit is a generous 1 GB maximum upload file size.

What technology is used for transcription?

This tool utilizes a local Whisper speech recognition model. All speech-to-text processing runs securely on our servers without using paid external transcription APIs.

Which formats can I export?

Once the transcription is complete, you can review and edit individual cue segments, adjust start/end timestamps, and export to SRT (SubRip), VTT (WebVTT), or plain TXT formats.

Is my audio and video file safe?

Yes. Your uploaded files are stored temporarily on our server only to perform the audio extraction and speech-to-text transcription. They are deleted immediately after processing.

Related Caption & Media Tools

Subtitle Editor Edit and adjust timing on existing caption tracks. SRT to VTT Converter Convert SRT files to WebVTT format. Audio Waveform Generator Create PNG or SVG waveform images from podcast, music, or video audio. Video Trimmer Cut and trim video segments for caption alignment. Audio Extractor Extract audio tracks from video files.