(PortableApps.com, Softpedia, MajorGeeks, FossHub) may be safe if they host unmodified copies. But many free download sites bundle adware, toolbars, or malware.
1. What is Format Factory? Format Factory is a well-known, free multimedia conversion tool for Windows. It converts video, audio, and image files between many formats. It also includes basic editing functions (cropping, merging, trimming) and file repair. Format Factory 5.0.0.0 Free Download Portable