Saving massive PSD's

Tristan · Post by **Tristan** » Fri Mar 04, 2011 5:52 pm

Hi Guys,

I'm a bit of a beginner with photoshop scripting, and I need to make a fix on a currently working script which can deal with some pretty big files. The problem is that when saving to PSD, the script has failed a couple of times because the filesize goes over 2gb (which I belivee is the maximum supported filesize for PSD's).

I was wondering if anyone knows a way that I could check to see if the save will go over 2gb, and if so save as a layered TIFF file instead?

Thanks in advance,

Tris

Mike Hale · Post by **Mike Hale** » Fri Mar 04, 2011 7:05 pm

Here is my understand of file size limits. psd max 2gb, tiff max 4gb, psb max 4 billion gb.

The problem is that is the saved file size and that size depends if the image is compressed and how well it compresses. psd and psb compress. Tiffs can with a choice of compression types. But it is hard for a script to know how well an image will compress( even Photoshop can't tell and will only give a warning that the file might go over the 4gb limit when saving to psd)

So it seems to me to better to save as psb.

Note: these are Photoshop size limits. Other apps may have trouble with tiff file over 2gb(Lightroom for one).