AutoSubtitles

AutoSubtitles is a browser-based tool that generates subtitles for your videos using AI. You upload a video file, the tool transcribes the audio, and you get a set of captions you can edit, style, and export burned directly into the video. It supports over 20 languages, handles multiple speakers and background noise, and works with common formats like MP4, MOV, and WebM. The free tier lets you export at 720p with a small watermark, and there's no signup required to start.

The tool stands out for its simplicity and speed — the whole process from upload to export can take under a minute. After transcription, you can choose from 25+ style presets (Classic, Neon, Karaoke, Street, Corporate) or customize every detail: font, size, color, outline, background, position, and alignment. You can also edit individual words, adjust timing, merge or split segments. The AI handles automatic language detection, and the audio is sent for transcription only — the video stays on your device. Pro and Max plans remove the watermark, extend video length limits, add AI subtitle translation, and let you save custom styles or upload your own fonts.

AutoSubtitles is built for anyone who publishes video online: YouTube creators who want to improve watch time and SEO, TikTok and Reels creators who need captions for short-form content, educators making lessons accessible, freelancers and agencies delivering captioned videos to clients, social media managers who need consistent styling across platforms, and podcasters turning audio into captioned clips. The free tier is genuinely usable for basic needs, and upgrading is optional.