pixelizes

Pixelizes means to render an image into visible square blocks called pixels, either as a technical process in digital imaging or as a deliberate effect to obscure detail.

News broadcasts pixelize faces to protect identities, and censors pixelize sensitive content.

The effect can also occur unintentionally when low-resolution images are enlarged, making individual pixels conspicuous.

The video pixelizes the license plate so it can't be read.