This is a plain-language overview, not legal advice — laws differ by country and are changing quickly. But the principles below travel well, and following them keeps you clear of nearly every problem.
Swapping a face is not a crime in itself, any more than a word processor is. What can break the law is a particular use of it — and the deciding factors are almost always consent, purpose, and whether you present the result as real.
Using your own face is always fine. Using someone else's needs their agreement. Many places now treat a realistic video of a real person, made and shared without consent, as a serious wrong — especially anything sexual, which is illegal in a growing number of countries regardless of intent. If you would not be comfortable showing the person, do not make it.
Separately from consent, many jurisdictions give people rights over their own image, particularly against commercial use. Putting a celebrity's face on an advert for your product can land you in trouble even if no one believes it is genuinely them. A clearly labelled personal joke is a very different thing from a commercial one.
The video you swap into can carry its own copyright. Making a private clip for yourself is low-risk; publishing a swap built on someone else's film or music video can run into the rights in that footage. This is usually a takedown-and- annoyance problem rather than a courtroom one, but it is worth knowing.
The fastest way to turn a harmless swap into a harmful one is to present it as genuine. Label it, keep it obviously a joke, and you remove most of the risk and nearly all of the harm.
Everything you upload and everything you make is deleted automatically 24 hours after it is created, and each job asks you to confirm you have the right to use the face. That is not a substitute for the judgement above, but it means your material does not linger on our servers.
Try it — free credits, no cardYou don't need to install anything to swap a face on a phone. Here is how to do it in a mobile browser and save the result to your gallery.
About a minute for a short clip — here is what decides the wait, from clip length to the difference between free and paid credits.
Blurry, off, or just not you? The eight most common reasons a face swap disappoints — and the quick fix for each.