File size of PSD files has ballooned

[P5E2E]

I am using Photoshop (automatic updates, currently on 24.6.0) on macOS (Ventura, latest version) and have noticed in the past few weeks the size of PSD files has increased considerably.

I have a file I am working on now which is over 800mb, whereas a file with the same dimensions and has the same number of layers, etc. from last year is 42mb.

I don't think I have made any changes to File Handling or the compression settings.

Can anyone please advise? 800mb per file is untenable!

[Stephen Marsh]

Start by looking for bloat of excessive photoshop:DocumentAncestors metadata:

https://prepression.blogspot.com/2017/06/metadata-bloat-photoshopdocumentancestors.html

[P5E2E]

Thanks. I was hopeful that would work, but the metadata is not present in the files.