Compress ZIP online
Shrink a ZIP archive by re-compressing it at a higher level — useful when the archive was created with little or no compression in the first place.
Accepted source formats
How it works
Drop your ZIP archive: its contents are analyzed without being extracted.
The archive is re-compressed at an optimized level based on the files it contains.
Download the new ZIP archive, typically smaller if the original held mostly text or documents.
Common mistakes
- Using a source file of poor quality.
- Publishing without checking the final result.
- Confusing file size, dimensions and quality.
- Overwriting the original file without keeping a copy.
Pro tips
- Always keep an original version.
- Test several settings before downloading.
- Use WebP for the web when possible.
- Choose descriptive file names for SEO.
Privacy guaranteed
Your files are processed locally in your browser and are never uploaded to our servers.
Adapt your files to your needs
Prepare your files for the web, emails, professional documents or online sharing. Processing happens directly in your browser, fully private and with nothing to install.
Practical formats for everyday work
Choose the formats best suited to your needs: publishing, archiving, printing, collaboration or quick sharing. Processing happens directly in your browser, fully private and with nothing to install.
Free tool, no signup required
Use the tool for free, with no account, no email required and no unnecessary steps. Processing happens directly in your browser, fully private and with nothing to install.
Secure, private processing
Your files stay on your device and are processed locally. No file is ever sent to a remote server. Processing happens directly in your browser, fully private and with nothing to install.
Save time on all your files
Keep a simple workflow: add your files, choose your settings, then download the final result. Processing happens directly in your browser, fully private and with nothing to install.
Discover all our tools
Convert, compress, merge and edit your files in a few clicks.
Complementary tools
Guides and tutorials
Learn how to use our tools with our detailed guides.
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How to convert a archive file to archive? online
Convert your archive files to archive for free, online, no signup or installation. Change file extension fast, in batch, directly in your browser.
How to convert a archive file to archive? online
Convert your archive files to archive for free, online, no signup or installation. Change file extension fast, in batch, directly in your browser.