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What is a 7Z file extension?

.7z file extensions are compressed archive files created with 7-Zip software. 7-Zip uses a compression method known as LZMA – a lossless data compression algorithm – which reduces file size but preserves quality. 7-zip can contain multiple directories and files.

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How to open 7Z files

1. If you have a 7Z file to open, ensure that the 7Z file extension check box is ticked in the WinRAR Integration panel:

WinRAR can open 7Z (7-Zip) extension by default
WinRAR can open 7Z (7-Zip) extension by default

2. Double-click on the file and it will be displayed in WinRAR. Choose the files you want to extract/open and click on the “Extract To” icon at the top of the WinRAR window:

WinRAR can extract 7Z (7-Zip) files
WinRAR can extract 7Z (7-Zip) files

WinRAR supports the following popular archive formats: