The image editor below has all of the basic functions, crop, resize, rotate, bring to front or back, add text to images, frames, image curve, shadow plus lots of frames, stickers, effects and fonts.
I do a lot of work with graphics for apps and websites. Creating logos, icons, launch images, backgrounds, buttons, just about everything required in an app re-skin or website. For most of the time I´ve worked online or building apps, I used various websites and my MacBook to produce the graphics. There was not a single site I used that had everything I needed in one. So I bought a script and modified it to contain every function I need to create all the graphics for apps and websites.
Feel free to use my free online image editor, I hope you find it useful.