A:Answer Chromebooks natively run the Google Chrome Browser, therefore anything that you can do with the Chrome Browser on a PC or Mac computer you should be able to perform on a Chromebook.
If you're able to edit PDF files using some website in the Chrome browser on another device you should be able to do that on a Chromebook.
This Chromebook also runs many Android applications therefore if there is an Android application that allows you to edit PDF files, that app should run on this Chromebook.