Mosaic Post Nothing is uploaded
Face detection and blurring both run inside your own device. Your video never travels over the network.
USE CASE
Store and company videos: automatically blur faces caught in the frame
Film inside your store and customers end up in the shot; film in the office and your staff do. Finish the blurring before you publish, without your footage ever leaving the building.
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?
- Customers appear in your store-tour video, and there's no way to get their consent to publish.
- Training and how-to videos still show the faces of employees who have since left.
- Hiring an editing studio is expensive and slow to deliver.
- Handing internal footage to an outside editor is itself a data-handling concern.
Mosaic Post requires no account and costs nothing, so you can use it only when you need it. There are no monthly contracts and no quote negotiations. Because the processing runs in the browser, there is no procurement or vendor onboarding either.
Customers caught in a store tour, former employees still visible in training manuals, visitors in recruiting or social-media footage — business videos need face processing again and again. The AI tracks faces automatically across every frame, so the work is the same no matter how many people appear.
An editing studio or manual service typically runs around ¥4,000 for a 10-minute video, plus quotes, file handovers, and days of turnaround. Mosaic Post handles videos up to 3 minutes for free, on the spot. The more often your team publishes video, the more the cost and effort gap compounds.
On the data-handling side, your footage passes through nobody's hands at all. Detection and rendering both run inside your own device, so the video is never transmitted to our servers in the first place. Nothing is stored, nothing needs deleting, and there is no lingering copy to worry about.
Outsourcing to an editor vs Mosaic Post (automatic AI)
| Editing studio / manual service | Mosaic Post (automatic AI) | |
|---|---|---|
| A 3-minute training video | Around ¥1,500+ (often more per person shown) | Free (regardless of headcount) |
| Turnaround | Days, by consultation | Fastest immediately — usually quicker than the runtime |
| Contracts & quotes | Back-and-forth required | None. No sign-up, no cost |
| Footage handling | Passes through an editor's hands | Never leaves your device |
| Length limit | None (but cost grows with it) | Up to 3 minutes |
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
Can I get a receipt?
No. It is free, with no sign-up and no payment. Because your video is never transmitted, it also works in environments that restrict sending material outside the organisation.
Can it handle long videos?
Up to 3 minutes. Because everything runs on your own device, longer videos need to be split. Large files such as 4K are scaled down to Full HD on export.
How quickly will it be delivered?
It depends on your device. Expect roughly 1.3 times the length of the video on a computer, and several times that on a phone. There is no queue.
Is it safe for videos that show internal or confidential material?
Your video is never transmitted to us. Everything is processed on your device, so confidential footage never passes through an outside server. Since we never hold the file, there is no way for it to be used for AI training or shared with anyone.
Can I process several videos, such as a set of training videos, at once?
One video at a time, but there is no limit on how many you do. It is free, so no quotes or consultations are needed however many you have.
Do you support invoicing (monthly consolidated billing)?
You need a browser with WebCodecs, the modern API for handling video. Chrome and Edge on desktop work, as does Safari 16.4 or later on iPhone. If your browser is unsupported, the page says so.
Related guides
Other use cases
No sign-up, no cost. Your video is processed right here, never uploaded.
Blur faces for free →