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
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 conversionsTo
Portable Document Format
Fixes a document's layout so it looks the same everywhere it is opened or printed. Wrapping an image in a PDF is good for sending and archiving, but you can no longer edit it as an image.
All PDF conversions