Are files uploaded to a server?

No, all compression happens in your browser. Files never leave your device.

What compression format is used?

Files are packaged into standard ZIP format, compatible with all operating systems.

Compress files in your browser using ZIP format. Free online file compression tool.

Select Files to Compress

ZIP File Name

Any file type: documents, images, videos, code, and more. All packaged into a standard ZIP archive.

No, all compression happens locally in your browser. Your files never leave your device.

Standard ZIP format, compatible with Windows, macOS, Linux, and all major operating systems.