Some programs might be able to create icons from JPEG images. However you should look for a conversion to a specific format, such as ICO.
Convert JPEG bitmap image format to Icon image file.
We have found 3 software records in our database eligible for .jpeg to .icon file format conversion.
Microsoft Windows software - convert jpeg to icon on Windows
GIMP is a free graphic and photo editor used to photo retouching, image composition and image authoring. GIMP is able to expand its features with plug-ins and extensions.
Convert from jpeg file
to icon file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned jpeg to icon. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert jpeg to icon on OS X
GIMP for Mac is a free graphic and photo editor that allows users to retouch photos, compose images etc. GIMP is able to expand its features with plug-ins and extensions.
Linux/Unix software - convert jpeg to icon on Linux
GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.