Truly free auto caption generator
No watermark · No sign-up · No limits
Frequently Asked Questions
Everything you need to know about truly free, in-browser AI captions
Q: Is there a watermark on exported videos?
No. CAPFLY AI exports clean MP4 videos with zero watermarks, logos, or badges — 100% free for all your clips.
Q: Why is CAPFLY AI completely free? What's the catch?
There is no catch. CAPFLY AI runs inside your web browser. Because processing happens on your device, we don't pay expensive cloud GPU bills — so there are no credits to meter and no monthly fees.
Q: Do I need an account or credit card?
No. There is no account to create, no email to confirm, no sign-in popups, and no credits to buy. Drop your video and get captions instantly.
Q: Are there video export limits or monthly caps?
No. You get unlimited video captioning with no length limits, no monthly video caps, and no paywalls.
Q: Is my video private?
100% private. Your video files never leave your device and are never uploaded to any cloud servers.