When comparing Photopea vs MyPaint, the Slant community recommends Photopea for most people. In the question“What are the best free Photoshop alternatives?” Photopea is ranked 3rd while MyPaint is ranked 11th. The most important reason people chose Photopea is:
Photopea allows dragging & dropping images in to the browser window to upload them and add to the scene.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Drag and drop support
Photopea allows dragging & dropping images in to the browser window to upload them and add to the scene.
Pro Very reactive on feedbacks
Pro Fast to load
Pro Can save as PSD
This means you can open these files in Photoshop, so if you don't have Photoshop on one device, you can still export your Photopea project and continue editing on Photoshop on another device
Pro Photoshop Like Interface
It has a Photoshop-like interface with most of its features for basic editing.
Pro Has many features
Pro Uses Photoshop standard shortcuts
Pro Requires no browser plugin
As it is an HTML5 application, running it requires no additional plugins on modern browsers.
Pro Interface gets out of the way
MyPaint mostly consists of the canvas. The interface to select different brushes can be brought up if needed, but it generally stays out of the way of getting things done.
Pro Good support for pressure sensitive graphics tablets
MyPaint was designed specifically with pressure sensitive graphics tablets in mind.
Pro Good media emulation
Pro Forgo the need to resize the canvas
If a user needs a bigger canvas all they need to do is zoom out instead of re-sizing.
Cons
Con Hard to get used to it at first
However, you'll get used to it later!
Con Has only basic filters and operations
Con Is not stable at all
I could not even open a png file to start without the software to freeze.
Con Not a lot in terms of image manipulation
MyPaint focuses only on drawing. It has very little in terms of post processing or image manipulation features.