CompressUp — Free Private Image Compressor for JPG, PNG & WebP

CompressUp is a free private image compressor for faster pages without wrecking the details. Batch-optimize JPG, PNG and WebP with MozJPEG, ImageQuant, OxiPNG and libwebp — entirely in your browser. No cloud. No account.

Private by design: files never leave your device. Encoding uses WebAssembly on-device.

Features

• Pro-grade codecs (MozJPEG, ImageQuant, OxiPNG, libwebp)
• Batch queue, live before/after preview, ZIP download
• Quality mode or target file size
• Resize, convert formats, lossless options, skip if bigger

How it works

1. Add images (JPG, PNG, WebP, GIF)
2. Tune quality, size, format and resize settings
3. Compress and download singles or a ZIP archive

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