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
Silicon Graphics Image
The native image format of Silicon Graphics workstations, still used in visual-effects pipelines. It carries transparency and holds 8 or 16 bits per channel.
All SGI conversionsTo
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 conversions