About us
CompressJPG is a collection of free online tools for compressing, resizing, cropping and converting images. Our goal is simple: make everyday image tasks fast and easy, without asking you to upload your photos to someone else’s server.
How our tools work
Every tool on this site runs inside your web browser. When you add an image, it is processed on your own device using modern web technology (WebAssembly and Web Workers). The image is never sent to us, so we cannot see, store or share it.
For JPEG compression we use MozJPEG, an open-source encoder originally developed by Mozilla and also used by Google’s Squoosh. It produces noticeably smaller files than standard JPEG encoders at the same visual quality.
Who uses CompressJPG
- Students and job seekers who need photos and signatures under a size limit for online forms
- Bloggers and shop owners who want fast-loading pages
- Anyone who needs to email, share or upload photos without hassle
Free to use
All tools are free, with no account required and no watermark. The site is supported by advertising, which helps us keep the tools free and improve them over time.
Questions or suggestions? Visit our contact page.