OALD
https://www.oxfordlearnersdictionar...glish/photoshop
photoshop something to change a picture or photograph using a computer

Collins
https://www.collinsdictionary.com/d...glish/photoshop
to alter (a digital image) using Photoshop or other image editing software

MW
https://www.merriam-webster.com/dictionary/photoshop
: to alter (a digital image) with Photoshop software or other image-editing software especially in a way that distorts reality (as for deliberately deceptive purposes)

1992 年就有把 photoshop 當作「改圖」的意思了。