Take a PNG, GIF or JPG and convert into icon files. This program doesn't need to be downloaded, added a sense of security from downloading online software programs onto your computer.

To convert a JPG to PDF, you'll need to change the file format on your computer's default photo-viewing app. For Windows users, this process is done in the built-in Photos app, and for macOS users ...

You can convert HEIC files to JPG on a Mac using the Preview app, then you can upload photos to websites that don't support the HEIC format.