This is a chrome extension developed in Java, the procedure is as follows:
1º Access a profile of Pinterest, Instagram, Behance, sx and Tumblr.
2nd The extension recognizes the number of images that profile has, in the case of Pinterest its "Images" pins
3rd The extension gives you the option to download up to a limit of 250 images.
The job would be to remove that limit so you can download them all in this case.
I have the .zip file with the extension and its files.