Export TGA or BMP textures for WebGL Bablylon.js has a exporter plug-in for Blender. Works great, but some of the models that I get from turbosquid have TGA based textures. Since WebGL needs textures in JPG, PNG, or other web friendly formats, I am forced to convert hunderds of TGA  or BMP textures by hand to JPG or PNG.

Does anyone have a batch way of doing this?

(also I am specifically looking for suburban scenes such as: 
http://www.turbosquid.com/3d-models/housing-development-rt-3d-model/760773

But they do their trees as two-intersecting planes (great for Max 3DS). But WebGL engines like sprites. So I also need a way to convert those artifacts..

(see below for the tree meshes that will not work in WebGL):
There is an addon to batch convert image files with blender.

After installing the addon, the usage is simple:


Tell the addon where the folder of images is (must contain only the images to convert)
Give it a output folder
Set the render settings correctly (you will want PNG)
Click the Batch convert button.




To keep the original file sizes, check the Keep Original Resolution check box in the Batch Converter settings in the tool shelf.