Quick Resize Watermark Keep, developed by Semicolon Group, is a free Android application that allows users to add watermarks and resize multiple images simultaneously while still maintaining the original image quality. With this app, users can quickly and easily edit their images for social media platforms like Facebook, Instagram, Twitter, and more.

The app's main features include the ability to add watermarks to images, resize images to common social media sizes, and customize the quality of the edited images. Users can also save edited images as PNG or JPEG files. Additionally, the app offers a "PRO" version that allows users to save all editing steps as an action for later use with a single tap, edit up to 20 images simultaneously, and quickly create custom watermarks. However, the free version of the app contains ads.

Overall, Quick Resize Watermark Keep is a simple and efficient app that can be useful for anyone who needs to edit images quickly and easily on their Android device.