Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
theonlineconverter.com - Theonlineconverter.com is an online file conversion platform which offers a user-friendly, cross-platform online tools for user's diverse needs. It allows batch conversion of files and is completely free of cost.
GIMP - GIMP is a multiplatform photo manipulation tool.
ConvertOnMac - ConvertOnMac is the best free online converter for every Mac user that supports more than 500 different file formats.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Convertio Vector Converter - Convertio Vector Converter is a unique platform that offers you to convert the vector into any format.
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.