Free AI subtitle & caption generator
Auto-caption any video — right in your browser. 100% private (your video never leaves your device), free, no watermark, no sign-up. Export SRT, VTT or TXT for Reels, TikTok & Shorts in 99+ languages.
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💡 How to use the subtitles: drop the .SRT into Instagram Reels (Add → Captions → upload), CapCut, YouTube Studio, or Premiere/DaVinci to burn them in.
🔒 Auto-generate downloads a small AI model the first time (one-off, then cached) and runs fully on your device — nothing is uploaded. Speed depends on your phone/PC; works best on a recent browser. If it can't run, you can still add & time lines manually.
🔒 Auto-generate downloads a small AI model the first time (one-off, then cached) and runs fully on your device — nothing is uploaded. Speed depends on your phone/PC; works best on a recent browser. If it can't run, you can still add & time lines manually.
Why creators add captions to every reel
Around 8 in 10 people watch short videos on mute — without captions, your hook is lost. Subtitles boost watch-time, accessibility and reach, and they're one of the easiest viral upgrades you can make. DMLAI's subtitle generator does it for free, privately, with no watermark, then you finish the post with captions, hooks & hashtags from the main tool.
Caption it, then make it go viral
Add subtitles here, then get a viral score + ready-to-post captions, hooks & hashtags.
🚀 Open the AI Content Tool