4K Image Compressor

The application reduces the file size of images and PDFs by applying lossless or adjustable compression, allowing users to specify a target size, percentage reduction, or exact byte count. It supports a range of formats—including JPG, JPEG, PNG, HEIC, WEBP, BMP and PDF—and can convert files between these types while preserving visual quality. A built‑in comparison view lets users see original and compressed versions side by side to verify results.

Batch processing lets multiple files be compressed in seconds, making it useful for photographers, web developers, designers, and anyone who needs to optimize large image collections or prepare assets for faster web loading and easier sharing. The tool operates locally without an internet connection, ensuring that processed data never leaves the user’s computer.

Available for macOS, Windows and Linux, the program offers customizable compression settings, format conversion, and PDF size optimization, all within a single desktop interface.