I tried changing the texture to PNG but with no effect.

Here it is

Here you go, also thanks for replying so quickly.
Let me know if there is anything else you want from me.

Greetings, I recently discover blend4web and have taken greate intrest in it.
However every time I export a blender file into a html file and open it with the browser the bump map won´t work. Ofcourse I have looked on the forum about this but cant find anything that have helped so far. If anyone know how to fix this I would be more than happy.