Before you share, check what your face-blurring app saves

When you cover a face in a photo, the important result is the image someone else receives. Before sharing, open the saved copy and check that everything you meant to conceal is actually concealed.

It is a small step that can catch a big problem. An editor can show face markers, a strength setting or a successful save message without giving you enough information to judge the finished image.

Check the saved image

Try this with a non-sensitive test photo before relying on any face-blurring tool:

1. Select the faces you want to conceal and choose your preferred effect.
2. Save a new copy.
3. Open that new copy in Photos or Files, outside the editor.
4. Zoom in on every covered face and check the edges of each region.
5. Make sure you select the edited copy when sharing.

A slider marked “100%” describes a setting inside that app. It is not a standard measure of privacy, and it does not tell you whether the exported result meets your needs.

Detection is only the starting point

Automatic face detection saves time, but review the whole image yourself. Small background faces, faces at an angle, partially hidden faces and poor lighting deserve particular attention.

A useful tool should let you correct what it misses. In Blurpeg, you can choose which detected faces stay visible and add manual concealment to other areas. That also helps with details such as names or a barcode on a boarding pass. Cover the entire sensitive area, then check the saved result.

Choose the right kind of concealment

Blur and mosaic change how a region looks, but they can retain visual information. Their effectiveness depends on the implementation, strength, region size and source image. Neither should be treated as a guarantee that a person cannot be recognised.

An opaque solid cover, correctly applied to the exported pixels, replaces the visible detail inside the covered area. It is the clearer choice when you want that detail removed from the shared image. Review the surrounding context too: hair, clothing, a name badge or the location can still identify someone.

Blurpeg offers Blur, Mosaic and Solid so you can choose the treatment that suits the image. Whatever you choose, review the actual export.

Keep the editing process private too

Consider where the photo goes during editing. Does the tool process it on your device, or upload it to a server?

Blurpeg processes photos and documents on your device. There is no Blurpeg account to create and no upload of your photos or documents to a server for editing. Your chosen storage and sharing services still have their own behaviour—for example, a photo library may sync saved images to the cloud.

On iPhone, Blurpeg also detects faces in the live camera view, letting you see detections before capture. You can review the captured image and make corrections before exporting.

Apply the same check to every app

We build Blurpeg, and this advice applies to it too. Automatic detection, an attractive preview and a successful save message are useful parts of the process. The saved image is what you are about to share.

Open it. Check it. Then share the copy you intended.

Explore Blurpeg

See live camera detection, photo editing and document redaction

Follow the on-device face-blurring guide