How to Blur the Background on iPhone

An iPhone can produce a soft, blurred background that looks close to a photo from a larger camera. The catch is that the built-in tools depend on how the picture was taken. A Portrait mode photo can be adjusted at any time, while an ordinary photo has no depth information to work with. This guide covers both situations and what to do for photos the Photos app cannot blur.

How iPhone background blur works

In Portrait mode the camera captures depth, meaning how far each part of the scene is from the lens. It uses that depth to keep the subject sharp and blur what is behind it. Because the depth information is saved with the picture, you can change the blur later. A regular photo has no such map, so the iPhone cannot apply the same effect to it afterward through the camera tools alone.

Which models support Portrait mode, and which subjects it recognizes, depends on the phone and the iOS version. If the Portrait option does not appear in your Camera app, check Apple's support pages for your model rather than assuming it is broken.

Method 1: Take the photo in Portrait mode

1. Open the Camera app and swipe to Portrait in the mode selector below the viewfinder.
2. Frame your subject. Keep a little distance between the subject and the background, because more distance gives a stronger blur.
3. Read the prompts at the top of the screen. If it says to move farther away or to find more light, follow it, since the depth effect needs enough of both.
4. When the label shows that the effect is ready, tap the shutter button.
5. Open the photo in the Photos app. A Portrait badge confirms that it stores depth.

Good light and a clear separation between the subject and the background give the cleanest edges. Hair, glasses, and objects held in front of the body are the usual trouble spots.

Method 2: Change the blur after shooting

This is the setting many people never notice. On a Portrait photo, you can adjust how strong the blur is, and even turn it off.

1. Open the Portrait photo in Photos and tap Edit.
2. Look for the depth control, often shown as an f followed by a number, at the top of the screen. If it is not visible, tap the Portrait icon first.
3. Drag the slider under the picture. A lower f-number gives more blur, and a higher number gives less.
4. Tap Done to save. The change is not permanent: you can reopen the edit and revert to the original.

In recent versions of iOS, you can also adjust the focus point after the shot by tapping a different person or object in the editing view. The available controls vary by phone and by version, so use what your Photos app offers.

Method 3: Lift the subject out of an ordinary photo

Recent iOS versions can recognize the main subject in many photos. In Photos, you press and hold on the subject, and it lifts away from the background. You can then copy it or share it as a cutout. This is not the same as blurring the background, because the result is the subject alone. But it is a quick way to get a clean cutout that you can place on another picture or a blurred copy of the original. Whether it works depends on your phone, your iOS version, and how clearly the subject stands out.

What if the photo has no depth data?

Photos from the standard Photo mode, screenshots, pictures saved from messaging apps, and images downloaded from the web are all flat. The depth slider is missing for them, and there is no built-in setting that blurs only the background. You have three choices:

• Retake the picture in Portrait mode, if you still can.
• Use a third-party editing app that offers a lens-blur or selective-focus tool, where you place the focus area by hand.
• Use a web tool that detects the subject for you, which is the quickest option for a single photo.

A faster free way, from Safari

Open Blur Photo Background Online in Safari on your iPhone. You do not need to install anything or create an account.

1. Tap to choose a photo from your library.
2. Wait a few seconds while the AI model separates the subject from the background.
3. Pick the blur preset and move the strength slider until the background looks the way you want.
4. Save the result as PNG, JPG or WebP and add it to your photos.

The photo goes over an encrypted connection to the site's server, the result comes straight back, and the site does not save or keep images. Location and camera metadata are removed from the copy that is sent. It is free, there is no watermark, and each visitor has a daily allowance of 30 images. Images up to 20 MB and 4096 px on the long side keep their full size, and larger ones are scaled down first. JPG, PNG and WebP files work. HEIC photos work only where the browser can read them, such as Safari, so if a file will not open, export it as a JPG first.

The blur from a web tool is applied evenly behind the subject, so it will not match the gradual falloff of a Portrait mode photo. It is a good fit for profile pictures, listings, and social posts, and for any photo that has no depth data.

Common problems and fixes

• The edges look cut out. The subject was too close to the background, or the light was low. Retake with more distance, or lower the blur strength.
• Part of the person is blurred. Hands and objects close to the camera can fall outside the subject map. Tap Edit and move the focus point, or try again with the item held nearer the body.
• There is no Portrait option. The model may not support it for this subject, such as objects or scenery. Use the Safari method instead.
• Blur disappears when I share the photo. Some apps convert the picture and drop the depth data. Send the file as an original or save it as a flattened JPG first.

If you want other kinds of backgrounds as well, such as a plain color, see our overview of how to blur the background of a photo on any device, and the guide to editing or changing a photo background.