Free · Private · No upload
Create 7Z files online
Drop your files to pack them into a .7z archive — processed entirely on your device, free and private.
No upload
Your bytes never leave this device.
Instant
No queue, no account, no waiting.
Private by design
No tracking on any tool page.
How to create 7Z files
- 1
Add the files or folders you want to pack.
- 2
7Z is pre-selected as the output format; tweak level, password or volumes if you like.
- 3
Compress and download the finished .7z archive.
About the 7Z format
7Z offers the best compression ratio of the family, with optional AES-256 encryption.
Frequently asked questions
Can I password-protect a 7Z archive?
Depends on the format: 7Z and ZIP support AES-256 encryption (7Z can also encrypt file names). TAR-family formats are plain containers without encryption.
Which compression level should I choose?
Higher levels compress smaller but take longer. Level 5 is a good default; use 9 for long-term archiving and 1 for speed.
Can I split the archive into volumes?
Yes — set a volume size in the options panel and the archive is split into numbered parts of that size.
Are my files uploaded to a server?
No. Compression happens entirely inside your browser — your files never leave your device.