Compress ZIP Files Online

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Compress ZIP Files Online

Drag-and-drop to compress multiple files into a ZIP archive directly in your browser with adjustable compression levels.

Compress Files

Drop files or folders, configure compression and optional encryption, then generate a downloadable archive.

Drop files here or click to browseArchive nameCompression methodCompression level (6)

0 = fastest, 9 = smallest

Password protection

How to use this tool

Drop files or folders into the compressor panel.
Set archive name, compression method, and optional password protection.
Generate and download the ZIP output directly from your browser.

Compression controls

DEFLATE levels balance speed and output size based on your needs.
STORE mode is useful for pre-compressed files like images and videos.
Output size metrics help you validate compression efficiency.

Private archiving

Password protection uses client-side AES-256-GCM wrapping.
No files are uploaded during compression.
Use strong passwords when sharing sensitive archives.

FAQ

Can I compress entire folders?: Yes. Folder uploads are supported where your browser exposes relative paths.
Is output compatible with standard ZIP tools?: Standard ZIP output is compatible; password-protected output uses ToolHop-specific encryption wrapping.
Does this run on a server?: No. ZIP creation is local to your browser.