Batch resaving renders out of Daz Studio to recuce file size

gibrril_fa945a6cee

Hi all,

I just found out something funny: O opened up a render I made using Daz Studio and did some very basic "post work" using good old MS Paint. Then I saved the image. It turns out, the file size drops from 12 MB from the original render to 3 MB for the file I saved using MS Paint. Now I repeated this with another render, just opening it in MS Paint and saving it to another folder, essentially creating a copy without changing anything. The same thing happens: the file size drops signifficantly... So I was wondering: is there a way to do this action as a batch command for multiple renders:

Open them up in MS Paint, and saving them out using the same file name they already have, but to a different folder?

That would mean I could save up on a lot of HDD space without spending hours opening and saving renders manually... Thanks a lot,

Kind regards,

Me

Richard Haseltine

I assume they were saved as JPG, in which case the conpression did change things (JPG compression is "lossy", it doesn't preserve the image as loaded even if no chnages were made in the application and the same quality setting was used on saving).

Sevrin

I've been using Irfanview for super-basic image viewing, editing, etc since the late 90s, and it's been getting upgrades ever since.  It allows you to batch process and convert image files in a number of ways, do quick slideshows and lots more.  It's one of the first things I install on any new computer.

 

gibrril_fa945a6cee

Hi,

Yes, they were saved as JPG. But I did a visual comparison, blowing up both images way past 100% view and I saw no visual difference between the "Daz version" and the "Paint Version"... Also, and this I find really waeird, if I open up the "Paint Version" in Gimp and resave it again, it pops up to 12 MB again... Lod the same 12 MB image into Paint, resave, and it's down to  MB again... With no visual differences as far as I can see...

Taoz

IrfanView can do batch processing of images in different ways including conversion to other formats (like PNG > JPG), but like Richard says saving as JPG or other lossy formats will always degrade visual quality to some extent.  In general it's recommended to save and keep the original images in a lossless format like PNG to retain the original quality, in case you want to edit them later, and only use JPG for the final result.  When first the quality has been degraded there's no way to restore it.

gibrril_fa945a6cee

Well, thanks for the tip! IrfanView works like a charm for what I need!