"Colour adjustments"

[Mr Felix]

I have just been away on a trip to Tassie.

Took some nice images of Cradle Mountain.

The two images are an example of what I took and what I get after a "colour adjustment".

I accept the adjusted one does look better.

However, I don't really want to have to sit down and do all of them myself - manually.

The second one is the modified one, just to be clear.

I used IRFANVIEW to do it and am happy enough with its results.

But I can't find a way to do it for all the pictures in a directory.

Sure there are "bigger and better" programs out there, but they cost $$$$, which I don't have to spare.

I'd appreciate a bit of help.

I tried posting in the
New to Photography CC (Beginners) area, but wasn't allowed to.
(Go figure)

Anyone?

Thanks in advance.