Reduce Images Online is a web-based image tool that helps users prepare pictures for sharing, uploading, and viewing across devices. Its service lets users resize JPG, PNG, GIF, and BMP files by setting dimensions in pixels, percentages, centimeters, or inches, and adjusting resolution. Users can also choose an output format and, for JPG images, set quality and background options. The site explains how image dimensions and compression affect file size, and offers practical guidance for reducing large photos while retaining useful visual quality.

The service provides a browser-based workflow for selecting, processing, and downloading resized images. Premium plans add features such as resizing multiple images at once, an ad-free experience, and email support. The site states that images are processed on the user’s device and do not leave it. Plans are available for one, three, or six months, with pricing and savings displayed on the site. Reduce Images Online also offers information about how the service works, a blog, contact details, and an Android app.