OrbConvert converts your image files online. Amongst many others, we support PNG, JPG, JPEG, WEBP, GIF, SVG and TIFF. You can use the options to control image resolution, quality and file size.
From
Wireless BitMap
A one-bit format designed for early mobile devices and WAP pages. Every pixel is black or white, and colour is discarded.
All WBMP conversionsTo
Portable PixMap
One of the Netpbm family: the simplest possible way to store a full-colour image, with no compression at all. Files are large, and it carries no transparency.
All PPM conversions