File Compressor
Compress images (JPG, PNG, WebP, GIF), PDF files, or bundle files into a ZIP archive. Adjust quality to balance size vs clarity. See before/after file size savings instantly. Runs entirely in your browser — files never leave your device.
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How to Compress Files Online
Why Use Our File Compressor?
What Our Tool Offers
Frequently Asked Questions
Compress JPG, PNG, WebP and GIF images, reduce PDF file sizes, or bundle any file type into a compressed ZIP archive — all in one tool.
The slider sets the target size reduction from the original. For example, 30% means the tool targets a 30% reduction in file size. The actual reduction shown per file is measured against the original. Higher reduction = smaller files but more quality loss.
Yes. In Image mode you can add multiple images and compress them all at once — results download as a ZIP. In ZIP mode you can bundle any number of files of any type into one archive.
Files up to 500MB are accepted. Very large files require sufficient device memory. Most images and documents are well under this limit.
Yes. All compression is done entirely in your browser. Your files never leave your device and are never uploaded to any server — 100% private.
Each PDF page is re-rendered via PDF.js at your chosen quality level and rebuilt into a new smaller PDF using pdf-lib. This typically achieves 70–95% size reduction and runs entirely in your browser.