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
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 conversionsTo
JPEG 2000
A wavelet-based successor to JPEG that holds quality better at small sizes and can carry transparency. It never replaced JPEG on the web, so browser and desktop support is patchy.
All JP2 conversions