Pixlr is a free online photo editing tool comparable to Photoshop. It allows users to import images, crop, add layers and filters, draw, adjust colors and exposure, add text, and perform other edits. The tool could be used in classrooms for subjects like art and language arts to illustrate stories, create posters, or demonstrate multi-step processes. While powerful, Pixlr has many functions that could distract students, so teachers would need to provide thorough tutorials.