IMGcon is a web application that allows you to convert your images or photos from their own image format to another image format and also it has option to compress the image while converting it. All you have to do is upload the image you want to the server and choose the new image format, the server will handle the rest.
The formats supported by IMGcon are JPG, PNG, GIF, WEBP, TIFF and HEIC. Other image formats can be added upon request. To make a new format request, you can fill out the contact form in the link given above.
IMGcon is completely free, does not contain any annoying advertising content and will always remain free.
Click Browse/Choose button to select an image or just use drag/drop feature, enter quality level and click upload button to upload it to the server. Maximum accepted file size is 32MBs.