Chrome: If you're a regular Google Keep user, you might have missed a (relatively) new feature in the app. If you paste an image into a note, Google lets you convert the image into editable text.
Open the note with the image and click the three dot overflow menu button. Pick "Grab image text" and the text from that image shows up underneath it on that same note. The OCR engine needs an internet connection to do its magic, but it works quite well.
Five Powerful Google Keep Features You Should Start Using [OMG! Chrome!]