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
Quite OK Image
A deliberately simple modern lossless format designed to encode and decode extremely fast. It carries transparency and beats PNG on speed, though far less software opens it yet.
All QOI conversionsTo
Bitmap
Stores every pixel uncompressed — simple and readable by old Windows software, but large. Transparency is not supported.
All BMP conversions