Create 7z Archive.
Create .7z archives with high-ratio LZMA2 compression.
1. Add files
Drop files here or click to browse
Select one or more files
Up to 2 GB per file.
How to use this tool
Create a .7z archive with high-ratio LZMA2 compression entirely in your browser.
Open the Create 7z tool
Visit makemyzip.com/create-7z. The 7-Zip WebAssembly engine loads on demand.
Drop your files or folder
Drag input onto the dropzone. Folder structure is preserved inside the archive.
Pick a compression level
LZMA2 levels run from Store (no compression) to Ultra (slowest, smallest). Normal is a sensible default for most uses.
Create and download
Click Create 7z. The encoder runs locally; when it finishes, the .7z file downloads.
Frequently asked questions
Why pick 7z over ZIP?
LZMA2 typically beats DEFLATE by 20-40% on text, code, and uncompressed data. ZIP is more universally readable; 7z is smaller.
What software opens .7z files?
7-Zip on Windows, Keka or The Unarchiver on macOS, and most Linux distros include p7zip. macOS Archive Utility does not handle .7z by default.
Does this support solid compression?
Yes — 7z’s default solid mode is used, which compresses similar files together for better ratios. There is no toggle in this tool.
How large can the input be?
Limited by your browser tab’s memory. Multi-gigabyte archives work on a desktop with enough RAM but compress slowly.
Related tools
3 picksCreate ZIP
Combine files and folders into a ZIP archive with adjustable compression levels.
Create TAR/GZ
Create .tar or .tar.gz archives, the standard format for Linux and macOS.
Inspect Archive
View the contents, sizes, and metadata of any archive without extracting it.