gimp binary package in Ubuntu Focal amd64

 GIMP is an advanced picture editor. You can use it to edit, enhance, and
 retouch photos and scans, create drawings, and make your own images.
 It has a large collection of professional-level editing tools and
 filters, similar to the ones you might find in Photoshop. Numerous
 fine-control settings and features like layers, paths, masks, and
 scripting give you total control over your images.
 .
 Many image file formats are supported, including JPEG, Photoshop (.psd),
 and Paint Shop Pro (.psp) files. It can also be used to scan and print
 photos.
 .
 To open files remotely (like over HTTP), install the gvfs-backends
 package.
 .
 To use a MIDI device (like a musical keyboard) as an input controller in GIMP,
 install libasound2 and read the how-to at /usr/share/doc/gimp/README.MIDI

Source package