I have a very large image that's over 80,000 by 80,000 pixels. It has to be saved in Photoshop as a PSB or PNG. I have it sectioned into many 5,000 x 5,000 pixel slices and need to export all of these slices.

From everything I'm seeing, Photoshop doesn't seem to allow slicing of images that are this big.

What options exist for slicing up a file this big into tiles?

  • Perhaps Acrobat since it can print to pdf using tiling or posterazor.
    – Joonas
    Apr 15, 2019 at 21:01
  • 1
    Automated slicing is for web-sized images. You could simply use some guides, duplicate images, and crop and export manually.
    – Billy Kerr
    May 15, 2019 at 9:10

1 Answer 1


Affinity Photo (which reads PSDs as well as most typical image and photo types) is specced to handle 65.5 Gigapixel (256000 x 256000) images - this may be your best bet.

Bear in mind that at a colour depth of 24 bits per pixel, each pixel takes up 3 bytes of memory, so if you're working in RAW, and have a lot of layer effects & filters, you may simply run out of available RAM before you reach that software-imposed top cap.

  • and GIMP can handle 262144px x 262144px images, and Photoshop 300000px x 300000px.
    – Billy Kerr
    May 15, 2019 at 9:16
  • @BillyKerr - Query for clarification: if PS claims to handle 300K Px images w/out issue, why the issue which OP has posted? May 15, 2019 at 14:45
  • 1
    I think probably because slicing was designed for web-sized images, not massive images.
    – Billy Kerr
    May 15, 2019 at 20:42

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