Mosaic Post Nothing is uploaded
Face detection and blurring both run inside your own device. Your video never travels over the network.
USE CASE
School-event videos: automatically blur 'other kids' faces'
Sports day, recitals, graduation. You want to share your child's big moment, but you're uneasy about posting other children's faces as-is. That's exactly what this service is for.
Blur faces for free → No sign-up / free / your video is never uploaded
See the results for yourself
Results from the actual pipeline (left: original / right: processed).
Demo footage: Tears of Steel — (CC) Blender Foundation | mango.blender.org
Sound familiar?
- You want to share with grandparents over text or social media, but lots of other kids are in the shot.
- You want to respect families who don't want their child's face shown, but you don't know which ones they are.
- Hiding faces one by one in a phone editing app just isn't realistic.
Mosaic Post automatically detects and blurs every face in the video, so you never have to figure out who needs to be hidden. Blur everyone, and nothing slips through the cracks.
No account is required, and it works straight from your phone. Your video is never sent to a server — the processing runs inside the browser, so there is no path by which your child's footage could reach anyone else. Videos up to 3 minutes, at no cost.
How it differs from free editing apps
- The work is the same no matter how many people appear — it doesn't grow with the number of faces
- Profile views and small faces in the background are detected too. Tracked automatically across every frame, with no manual mask tweaking
- No watermark on the result, no sign-up, nothing to unlock
- Your video is never sent anywhere, so there are no deletion policies to compare
Designed to protect your privacy
Nothing to delete, because nothing is stored
We never receive your video in the first place. There is no retention window to keep track of and no deletion to wait for.
Never used for AI training
Since your video never reaches us, there is nothing to train a model on or pass to a third party. It is ruled out by the design, not by a promise.
No sign-up, no payment
It is free, and you never enter an email address or card details. Open the page, pick a video, done.
How it works
- 01
Pick a video
No account, no app to install. Open the page and choose a video — even at this point, nothing is uploaded.
- 02
Faces are found
AI detects faces across every frame, tracking everyone automatically, including people who walk in mid-scene.
- 03
Choose who to hide
Every detected face appears in a list. Take out any you want left visible — keep yourself and hide everyone around you, for instance.
- 04
Export and save
The blurred video is written out. Expect roughly 1.3 times the length of the video on a computer, and several times that on a phone.
Price
Free
For videos up to 3 minutes. Larger files, such as 4K, are scaled down to Full HD on export.
Automatic detection is never perfect. Please check the finished video before you publish it.
Frequently asked questions
Will my own child's face be blurred too?
Right now, every detected face is blurred. An option to leave specific people's faces unblurred is currently under consideration.
Does it work with vertical videos shot on a phone?
Yes. It supports major formats like mp4 and mov, and vertical videos are processed as-is.
I'm nervous about handing over a video of my child.
We never take custody of it. Everything is processed inside your own browser and your video is never sent to our servers, so there is nothing stored and nothing to delete.
Our school bans posting videos on social media. Can I still use this?
Beyond public social media, you can use it for limited sharing such as a family group chat with grandparents, or simply as a personal keepsake. Please use it within the bounds of your school's policy.
Other use cases
No sign-up, no cost. Your video is processed right here, never uploaded.
Blur faces for free →