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ZIP File Compressor - Create a ZIP Archive Online

Pack many files into one compressed ZIP archive and choose how small it should be - all inside your browser.

What is ZIP File Compressor?

A ZIP file bundles several files into one and compresses them so they are quicker to send or store. Add any files, choose the compression level from 1 (fastest) to 9 (smallest) and download archive.zip. Files with the same name are renamed automatically so nothing is overwritten.

How to use ZIP File Compressor

1Add the files you want to pack - you can add more than once.
2Choose the compression level (9 is the smallest).
3Press Start.
4Download archive.zip.

Why use ZIP File Compressor?

  • Any file type, any number of files.
  • Adjustable compression level.
  • Private - no upload.
  • Free with no limits.

Who can use ZIP File Compressor?

  • Anyone emailing many files.
  • Students submitting assignments in one archive.
  • Professionals sharing project folders.

When should you use it?

  • When you must attach several documents to one email.
  • When a portal accepts only one ZIP.
  • When you want to save disk space.

Where can you use it?

  • Use it before sharing, emailing or backing up files.
  • Works in Chrome, Edge, Firefox and Safari on Windows, Mac, Linux, Android and iPhone - no app or software to install.

Tips for best results

  • Photos and PDFs are already compressed, so they shrink only a little.
  • Use level 9 for text files and level 1 for speed.
  • To open a ZIP, use the Extract ZIP File tool.

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ZIP File Compressor - frequently asked questions

How do I create a ZIP file online?

Add your files, choose the compression level and press Start. Download archive.zip.

Which compression level is best?

9 gives the smallest file and 1 is the fastest.

Can I zip any file type?

Yes. Documents, images, videos and other files can be zipped.

Are my files uploaded?

No. The ZIP is created in your browser.

Can I zip folders?

Select the files inside the folder. Browser uploads work with files rather than whole folders.

Is it free and private?

Yes. AllrounderBox is free, needs no sign-up and never uploads your files – processing happens on your own device.

Does it work on mobile?

Yes. It works in any modern browser on phones, tablets and computers.