Video to Captions
FREE AI VIDEO CAPTION GENERATOR
Drop your video. Get AI captions in seconds powered by OpenAI Whisper. Pick a style, download. No watermarks, no account required.
Original vs AI Magic
The Easiest Way to Add Captions to Any Video
Drop your video. Get captions. Download. That's it. No uploads to servers, no accounts, no watermarks.
Browser-Based Editing & Export
Caption styling, rendering, and MP4 export all happen in your browser using WebCodecs. No video uploads, no cloud processing for your edits.
Drop. Edit. Download.
Drop your video, get AI captions in seconds, pick a style, and download. Three steps, zero friction. The fastest caption workflow on the internet.
Free Forever, No Watermarks
No credit card, no account, no hidden limits. Export unlimited HD videos with zero watermarks. Your content, your way.
Viral Caption Styles, One Click
Karaoke highlights, pop zoom, bold outlines - the same styles blowing up on TikTok and Reels. Pick a preset and you're done.
Powered by OpenAI Whisper
Transcription is powered by OpenAI's Whisper model - the same AI behind the world's best speech recognition. Fast, accurate, and multilingual.
No Signups, No Installs
Open the site, drop a video, done. Works on Chrome, Edge, and Safari. No app to download, no account to create.
Go Viral Instantly
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.
Why Your Videos Need AI Captions
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.
Boost Watch Time
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.
Accessibility Matters
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.
Perfect for Every Platform
TikTok
Use bold, high-contrast colors for your captions to match the energetic TikTok vibe.
Instagram Reels
Keep your text centered and high to avoid being covered by the UI elements.
YouTube Shorts
Use concise, punchy captions to maintain the fast pace of Shorts content.
Privacy-First Design
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.
Frequently Asked
Is this really free?
Yes! You can generate unlimited captions for free. We are supported by minimal ads, so we don't need to charge you.
Do you watermark my videos?
Never. We believe your content belongs to you. All exports are 100% watermark-free.
Does my video get uploaded to a server?
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.
What formats do you support?
We support all major video and audio formats including MP4, MOV, MKV, MP3, and WAV.
Viral Knowledge Base
Level up your content creation with our expert guides on video editing and AI transcription.
Master Guide 2025
Complete walkthrough on adding AI captions to any video for maximum engagement.
TikTok Viral Captions
How to customize your captions to match the trending styles on TikTok.
Instagram Reels Guide
Perfect positioning and styles for Instagram Reels and Stories.
Multilingual AI Captions
How to generate auto-subtitles in 50+ languages for a global audience.
Submagic.co vs Free
Compare Submagic features with our unlimited free AI caption generator.
Veed.io Free Alternative
Ditch the watermarks and monthly fees. Switch from Veed to free.
Revid.ai Free Alternative
Unlimited AI captions without the credit system. Switching from Revid.
Mirage.app Alternative
The best free web-based alternative to Mirage app for AI video captions.
Riverside Alternative
Skip the subscription. Free AI captions without Riverside's monthly fees.
CapCut Alternative
Get viral captions without downloading CapCut. Browser-based and free.
Descript Alternative
Free AI captions without Descript's $24/month price tag.
Kapwing Alternative
No watermarks, no 720p limit. The free Kapwing alternative for captions.
Opus Clip Alternative
Unlimited caption exports without Opus Clip's credit system.
TikTok Captions Guide
Step-by-step: add viral AI captions to your TikTok videos for free.
Subtitles Without Uploading
Add subtitles to videos without uploading to any server. 100% private.
Instagram Reels Captions
Auto-caption your Instagram Reels with trending styles. Free and fast.
AutoSubtitles Alternative
Free browser-based alternative to AutoSubtitles. No account, no watermarks.
Media.io Alternative
Skip the uploads. Free private AI captions without Media.io's cloud processing.
Vmaker Alternative
Purpose-built captions without Vmaker's credit limits. 100% free.
Adobe Express Alternative
AI captions without Adobe's bloated suite. No Creative Cloud needed.
Free Subtitle Generator
Generate subtitles for any video instantly with AI. Completely free.
Free AI Subtitle Generator
Automatic AI-powered subtitles with OpenAI Whisper. No signup needed.
Add Captions to Video
How to add captions to any video online for free in 3 simple steps.
Auto Caption Generator
Automatic captions for TikTok, Reels & Shorts. Free, fast, no watermarks.
Stop writing captions manually,
start generating them for free
Drop your video, get captions, download. Three steps, done.
Your video stays on your device. No account, no watermarks, no upload.