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
Digital Picture Exchange
A film and television format built for high bit depths on set and in post-production. Expect large files — DPX is uncompressed and aimed at cinema workflows, not the web.
All DPX conversionsTo
Tagged Image File Format
Built for print and archiving: lossless, and able to carry multiple pages. Files are large and browsers will not display it, so it is not a format to publish online.
All TIFF conversions