I need to take a shoot from my scene and send it to server or pass it to javascript in order to insert it in a PDF. I have seen Application.CaptureScreenshot() does nothing in web player, and free version of unity does not have render to texture features, is there any other possiblity?
Texture2D.ReadPixels records the current contents of the screen as a texture. Then, you can use EncodeToPNG and pass the resulting data to a server using the WWW and WWWForm classes. It just so happens that the EncodeToPNG manual page contains a code example that probably does what you need (maybe with a little modification).