Pixlr Editor is a free Web-based alternative to Photoshop that can be used from any Flash-enabled browser. Coinciding with the release of Google Drive, Pixlr announced that its Chrome apps work with Google Drive as an integrated app. Here's how to get it up and running on your account:
Step 2: From your Google Drive account, right-click on an image, then go to Open with > Pixlr Editor.
Step 3: When prompted for permissions, click the "Allow access" button to let Pixlr integrate with your Google Drive account.
Step 4: After your image is finished loading into Pixlr, edit your photo as you please, then log out when you're done.
That's it. If you change your mind and want to remove the Pixlr app integration, go to the gears icon in the upper-right-hand corner, then choose "Manage apps." You'll be able to remove your third-party apps from there.