
Next, open the Tools menu and select Adjust Color. To get started, open your image in the Preview app. Remember – this method will only produce a very slight blurring effect, so don’t be surprised if you have to find another method! How to Slightly Blur an Image in Mac Preview If you’re not satisfied with the slight blur effect created by Preview, there are some additional suggestions for other photo editors that feature proper blur effects further down in the post. If it is text content, it will still be legible, so you can’t use this technique to obscure sensitive data, but you might still want to experiment with it to see how it works. This is not a full blur, and the original content will still be visible.

It is not possible to blur images fully using the Mac Preview app, but you can achieve a very slight blurring effect.

