Install Steam
login
|
language
简体中文 (Simplified Chinese)
繁體中文 (Traditional Chinese)
日本語 (Japanese)
한국어 (Korean)
ไทย (Thai)
Български (Bulgarian)
Čeština (Czech)
Dansk (Danish)
Deutsch (German)
Español - España (Spanish - Spain)
Español - Latinoamérica (Spanish - Latin America)
Ελληνικά (Greek)
Français (French)
Italiano (Italian)
Bahasa Indonesia (Indonesian)
Magyar (Hungarian)
Nederlands (Dutch)
Norsk (Norwegian)
Polski (Polish)
Português (Portuguese - Portugal)
Português - Brasil (Portuguese - Brazil)
Română (Romanian)
Русский (Russian)
Suomi (Finnish)
Svenska (Swedish)
Türkçe (Turkish)
Tiếng Việt (Vietnamese)
Українська (Ukrainian)
Report a translation problem
For Gimp/Photoshop, if the image doesn't have an alpha channel, save as a DXT1. Oh, and if it does have an alpha channel, save as DXT5
JP(E)G images are lossfully compressed, meaning that their quality is often not quite a perfect match of what you tried to export. And even worse than that is that the JP(E)G image format doesn't support alpha/transparency/translucency, while the need for alpha is not that uncommon for certain effects.
PNG images can be (and usually are) losslessly compressed, however, meaning that they can retain full quality when exported (possibly unless you use an odd and/or very high bits-per-channel amount... but if you don't know what that means, you probably aren't using that). They also support full alpha/transparency/translucency blending with no trouble.
Whether or not you want the VTF to be (lossfully) compressed (the DXT-related VTF formats, usually a good choice) or not (all other VTF formats), it's still best to retain an image's quality as much as possible until it's ready to be converted into a VTF.
It's also possible that VTFEdit will happily import a PNG image for you even if it doesn't want to import a JP(E)G image.