The Ultimate Photoshop Resource

How to remove blocky artifacts in photos in Photoshop

Subscribe on YouTube:

Watch the video for a more detailed explanation of how this color noise reduction works.

When photos are compressed too much, blocky artifacts can appear. Another common way that these artifacts can appear is when you use the HSL (Color) sliders are push in Camera Raw.

The image below highlights some of these artifacts.

Choose Filter>Camera Raw

Open the Detail panel. You will see small arrows that are hiding many options. Click the triangle to see the advanced options.

Choose Color noise reduction. Increase the slider to reduce the artifacts.

This trick doesn’t work on every image, but it works most of the time.


I hope you found this helpful.


Browse our hundreds of other free tutorials here, or search for what you are looking for in the search at the top of the page.

You can also browse by topics in the free tutorials menu. 

If you are ready to get serious about Photoshop, see our full length courses here


PS Don’t forget to join our mailing list and follow me on Social Media>

(Ive been posting some fun Instagram and Facebook Stories lately)

Great to see you here at the CAFE,


PS Don’t forget to follow us on Social Media for more tips.. (I've been posting some fun Instagram and Facebook Stories lately)
You can get my free Layer Blending modes ebook along with dozens of exclusive Photoshop Goodies here photoshop goodies for free

2 responses to “How to remove blocky artifacts in photos in Photoshop”

  1. how do you replace a color in PS with white? Every time I chose white in the color block and then try to paint it comes out grey, not white. What am I doing wrong?

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Access The Photoshop Vault

Unlock dozens of valuable Photoshop resources for FREE

The Ultimate

Photoshop Resource