Xnapper - Take beautiful screenshots instantly
Ui Thumbnail Generator - A simple way to generate thumbnail. For docs and demos.
Screely - Screely instantly generates dribbble-ready images. Simply upload your screenshot and we'll do the rest.
FilePreviews - Thumbnails and metadata for almost any kind of file
Snapit.gg - Take a screenshot of anything and it will look amazing in seconds!
Blog Cover - Cover image generator for your blog post