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7z files opener

PeaZip is a free cross-platform file archiver that provides an unified portable GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX...
Create 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP files
Open and extract over 180 archive types: ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX files and more...
Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives, split/join files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export job definition as script.

7z files extractor

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How to open 7Z files

extract 7z files

Create, open, extract 7Z files

PeaZip offers full read / write support (compressor, and extractor / opener) for 7Z archives and XZ files, through the Open Source components from 7-Zip and p7zip projects (released under LGPL license, as PeaZip) to offer the same GUI frontend to create, browse, and extract 7Z archives under Windows and Linux operating systems.
The software can also manage password protected 7z archives (encrypt and decrypt), and convert files to / from 7z format.
7Z format provides high compression ratio using by default LZMA2 compression algorithm - optionally LZMA, PPMd, BZIP2 and Deflate are available as alternative compression algorithms - and built in strong compression based on AES256.

Read also: what is .7z file format

As alternative utilities, 7-Zip (on MS Windows systems) and p7zip (on Linux/BSD), both free and Open Source tools, are recommended for working with 7z file format.

Compress to 7Z format

Use one of the following procedures to add files / folders to a new archive (single or separate - one for each input item) or into an existing .7z file

  • Compress to 7z from system file explorer

    • Select files and folders and use context menu entry PeaZip, Add to archive: you will be prompted to archive creation screen, allowing to set compression settings, output destination, encryption (password protection), and other options.

    • Alternatively, use system context menu entry Add to .7Z in order to start compressing selected items without further interaction

  • From PeaZip

    • Select files and folders, and use Add button (or application's context menu entry of same name) to be prompted archive creation screen

    • Drag and drop files / folders from the system to a PeaZip instance; if you are browsing an existing archive you will be asked if you want to add files to the archive or create a new one

From main archive creation interface it is possible to apply AES256 encryption (recipient will need to enter a password to read/extract the archive), and to split file - set creation of multiple volumes declaring the maximum output size (spanned archive), in order to keep the output size below mandatory limits (e.g. upload or mail attachment size).
From "Advanced" tab, you can fine-tune compression settings: faster or higher compression level, algorithm, solid compression block size, compress open files, create self-extracting archive (SFX) so recipient will not need an archive manager program to extract the data...

From "Console" and "Schedule" tab, the compression / backup task created in the GUI can be saved as command line script and (on Microsoft Windows operating system) scheduled for execution at fixed time intervals (hour, day of the week or of the month) - same apply for extraction / restore tasks, as the same tabs are featured in archive extraction interface.

Update existing 7Z archive

To update existing 7z archive, adding files and folders, proceed as shown above for archive creation, but select an existing archive as output and chose add (always replace files in archive) or update (overwrite only older files in archive) "archive function" in advanced tab.
Easiest way to edit an existing archive is opening it in PeaZip and dragging files/folders to it, which will automatically activate update mode - can be changed into add mode in advanced tab.

To remove (delete) data from 7z archive, select items and press cancel or "Delete from archive" button. Deleted items will not be recoverable from recycle bin.
Entries in the context menu on the right of delete button allows to delete the entire archive in different supported ways (recycle, quick delete, overwrite with zeroes, secure delete shredding data to make the archive not recoverable)

How to convert 7Z files

Convert any archive to 7Z format and vice versa is possible using the integrated file converter procedure, clicking Convert button, which extracts and then re-pack input archive files, optionally keeping or deleting original archives.

More generally this utility makes possible to convert any type supported for reading (e.g. 7Z, ACE, ARC, CAB, PEA, RAR, TAR, ZIP, ZIPX...), even mixed extensions at once, into any write-supported format (7Z, ARC, PEA, TAR, ZIP...), either converting each single input archive to a single output archive, or consolidating all input files into a single output archive in the new format.

Open and extract 7Z file

Follow one of the procedures described below to open (browse and search inside the archive) and/or decompress .7Z archives or .XZ files, using PeaZip as opener / extractor application

  • Decompress 7z files from the system

    • To view archive's content, open it in PeaZip with double click (if file extension is associated with the application), or using system context menu "Open as archive" entry, that will attempt to read any user provided file type regardless file type associations - this option is also available in PeaZip's context menu

    • Use context menu entry "Extract..." for full extraction screen GUI where to set output path and other options

    • Select one or more archives and use context menu entry Extract here or Extract here (to new folder) for quick extraction with no further confirmation

  • Within PeaZip main application

    • Extract button shows full featured archive extraction screen providing access to all options (password, set output path, open output path after extraction, keep or delete original archives, etc) and can send to extraction selected items only

    • Extract all to... button activate a simplified procedure only asking for output path

    • Simply drag & drop desired objects from the application to the system

    • Doubleclick on an archived file to open it in preview mode, i.e. to inspect its content before considering the need for real extraction

To extract a spanned (split) 7Z file, save all the parts in the same directory, then open as usual the first volume of the archive, which has .7Z.001 extension - subsequent volumes have progressively numbered file extensions (002, 003 etc).

Manage encrypted 7Z archives (AES256)

To create, or extract, an encrypted .7z file, enter the password in PeaZip clicking the padlock icon extract AES encrypted 7z file in the status bar (in the file/archive browser) or below output address field (in extraction or archiving interfaces), or click Tools > Enter password / keyfile in main menu, or press F9 accelerator key.

In encrypted 7z archives (AES256 algorithm) password protected items inside the archive are marked by * sign after filename.

Please note 7z format supports file-level encryption so multiple passwords can be used in the same archive to encrypt different group of files - and consequently in this case different password must be provided to access each part of the archive, changing password entered in PeaZip.

"Keyfile" field is optional, leave it blank if you don't want to rely on two factor authentication - keyfile is the "what you have" element (needs to be handled safely), password (or passphrase) is the non-material  "what you know" element; both are needed for recovering the encrypted file content.
Use of keyfile increases security over password only encryption since also having access to the keyfile will be required to perform the extraction, eliminating the need of overly complex passwords to resist to social engineering profiling, and brute-forcing or dictionary attacks.

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