Texture Images… what to do?

[Digbydo 2]

I am trying to build up my own set of 'Texture Images' to use in my other images.  However before I go any further, I'd like to know if I should save them as jpeg's or PNG's? ~ Should I save them as Square or Oblong and/or what is the best pixel size I save them to?  I have quite a few to do so I would rather start off on the right track & workflow than keep on chopping and changing as I go along.  Hopefully someone can shed some light on the topic ~ & Much'o thanks if you do.

[firstdefence]

How are these texture images being made?

PNG's are capable of transparency so for things like scratch or dirt textures PNG is a good option I would also consider TIFF/TIF if you want more complex textures with layers. I'd ball-park the size at around 6000 x 6000px square but I can't see any harm in making oblong textures as well. Another option is to take a look at the max size of your images and work around that.

[walt.farrell]

Some Textures sold in the Affinity Store use JPG, but some use TIFF.

4000-5000 px on the long edge seems common.

[walt.farrell]

16 minutes ago, firstdefence said:

I would also consider TIFF/TIF if you want more complex textures with layers.

But note that exporting a TIFF with "Affinity layers" will give you a file whose layers are accessible only in the Affinity applications, if that matters. TIFF files generally cannot contain layers, though they can contain additional application-specific proprietary information in addition to the image. That's what Affinity and some other applications use for TIFF files "with layers".

[Digbydo 2]

Thanks guys for the answers its been a great help.  My textures will be made from RAW photos of bricks and tiles as well as some other woven textures & fabric plus a host of watercolour paintings/ splashes.