Drop your video. Get AI captions in seconds powered by OpenAI Whisper. Pick a style, download. No watermarks, no account required.
Drop your video. Get captions. Download. That's it. No uploads to servers, no accounts, no watermarks.
Caption styling, rendering, and MP4 export all happen in your browser using WebCodecs. No video uploads, no cloud processing for your edits.
Drop your video, get AI captions in seconds, pick a style, and download. Three steps, zero friction. The fastest caption workflow on the internet.
No credit card, no account, no hidden limits. Export unlimited HD videos with zero watermarks. Your content, your way.
Karaoke highlights, pop zoom, bold outlines - the same styles blowing up on TikTok and Reels. Pick a preset and you're done.
Transcription is powered by OpenAI's Whisper model - the same AI behind the world's best speech recognition. Fast, accurate, and multilingual.
Open the site, drop a video, done. Works on Chrome, Edge, and Safari. No app to download, no account to create.
Boost your engagement on TikTok, Instagram Reels, and YouTube Shorts. Our AI-powered viral captions are designed to increase watch time and help you get more views.
In today's fast-paced social media landscape, 80% of users watch videos on mute. Without captions, your content is essentially invisible. Our free AI caption generator uses advanced speech recognition to create accurate, viral-style subtitles that stop the scroll and keep viewers engaged.
Studies show that videos with captions have a 40% higher retention rate. By making your content accessible and easy to follow, you encourage viewers to watch until the very end, signaling to the algorithm that your content is high-quality.
Subtitles aren't just for the hearing impaired. They are essential for non-native speakers and for those watching in loud environments. Providing captions ensures that everyone, everywhere, can enjoy your message.
Use bold, high-contrast colors for your captions to match the energetic TikTok vibe.
Keep your text centered and high to avoid being covered by the UI elements.
Use concise, punchy captions to maintain the fast pace of Shorts content.
Your video file is never uploaded. Transcription is powered by OpenAI Whisper - only the extracted audio is processed for captions. Caption editing, rendering, and MP4 export all happen inside your browser. Read our Privacy Policy.
Yes! You can generate unlimited captions for free. We are supported by minimal ads, so we don't need to charge you.
Never. We believe your content belongs to you. All exports are 100% watermark-free.
Your video file is never uploaded. Transcription is powered by OpenAI Whisper - only extracted audio is processed for captions. Caption editing, rendering, and MP4 export all happen in your browser.
We support all major video and audio formats including MP4, MOV, MKV, MP3, and WAV.
Level up your content creation with our expert guides on video editing and AI transcription.
Complete walkthrough on adding AI captions to any video for maximum engagement.
How to customize your captions to match the trending styles on TikTok.
Perfect positioning and styles for Instagram Reels and Stories.
How to generate auto-subtitles in 50+ languages for a global audience.
Compare Submagic features with our unlimited free AI caption generator.
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Add subtitles to videos without uploading to any server. 100% private.
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How to add captions to any video online for free in 3 simple steps.
Automatic captions for TikTok, Reels & Shorts. Free, fast, no watermarks.
Drop your video, get captions, download. Three steps, done.
Your video stays on your device. No account, no watermarks, no upload.