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
Scalable Vector Graphics
Describes an image as shapes and text instead of pixels, so it stays sharp at any size. Turning it into a pixel format freezes it at one size and throws that away.
All SVG conversionsTo
Flexible Image Transport System
The standard format of astronomy, carrying scientific data alongside the image. Files are typically far larger than the same picture as PNG.
All FITS conversions