best size/format for graphic uploads?

i've been reading alot learning what is the best size and formate for uploading textures and i would just like tog et some opinions.

i was thinking 512x512 jpg (50k ish) seems to look good in SL when it comes to artworks, signs and large textures. and then as small as possible for modeling textures.

woulod a tga be better than jpg, and what would be the best to keep lag down? i'm great when it comes to PS designs and keeping websites down to minimal sizes, but SL is new to me, and i would like to help in keeping the lag down...

the last thing i want is to upset my neighbors by introducing serious lag for loading times.

Your client software converts all your art assets to to JPEG2000 format, before uploading them to the server... so, really, the format you use to get your pics into the client isn't massively important. Just make it the cleanest, best quality picture you can (i.e. don't use a lossy, fuzzy format like JPG), and you'll be fine.

The recommended process is to save it as tga format, and import that.

Use 24-bit uncompressed tga, unless you need transparency. If the image uses alpha channels and transparency, use 32-bit, uncompressed tga.

Doing jpg works, but apparently has some minor image quality degredation issues.

ok, you have both given me plenty of info, thank you, it will help very much. i will use tga from now on.

In my experience, 256x256 is large enough for most signs and many textures, unless you have the texture on a large prims without repeats, and require much detail.