[Gimp-user] Can't open extremely large .PNG

[Deixis <forums gimpusers com>]

> I'm going to guess you are using a Linux system in this answer. Life
> is
> too short for me to try telepathy.
>
>
> If you run the file command on the image file in a terminal,
> file foo.png
> or
> identify foo.png
> do you get a size in pixels?
>
> I routinely open 10,000 x 20,000 pixel images in gimp.
>
> A good rule of thumb is the amount of memory you need will be
> width * height * 4 (assuming an 8-bit colour image)
> in bytes, e.g. for a 100,000 x 37,000 pixel image it's
> 100000 * 37000 * 4
> which gives 14800000000 bytes
> dividing by 1024 * 1024 (megabytes) gets
> 14114 megabytes
> and dividing that by 1024 gives
> 13.7 gigabytes.
>
> So to open this (fictional) image you'd want probably 16G of RAM or
> more in your 64-bit computer. On a 32-bit computer you'd want at least
> 20GBytes of swap.
>
> The size of the image file on disk just reflects how well or badly the
> PNG compression has worked, but if it's worked well, the image could
> easily need over 100G of memory, which you could do by adding a large
> amount of swap space and being very patient.
>
> Without more information about the image and your setup it's hard to
> guess and give more advice on which tools would be best.
>
> Liam

Oh my gosh I'm sorry, I forgot that Gimp is released on more than just Windows.
Yeah, I run in on Windows 10. I do have exactly 16 GB of ram, but only about 40
GB of free disc space left.

Is there perhaps just a way to cut the image into muliple images?

-- 
Deixis (via www.gimpusers.com/forums)