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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.

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FAQ / WORK WITH SUPPORTED FILE TYPES > READ AND WRITE ZIP FILES
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How to open ZIP files



CREATE, OPEN, EXTRACT ZIP FILES

free zip files utility


Create, open, extract ZIP files


PeaZip provides read/write support for .zip files, working as extractor, opener (list, search and explore archived files and directories), converter from/to Zip format, and integrity testing utility.
ZIP is the default archive format for PeaZip, which uses optimized 7-Zip/p7Zip Deflate implementation to reduce zip file size while keeping compatibility with other archival utilities.
The software can also manage password protected zip archives (encrypt and decrypt), and convert files to / from zip format.

Read more: what is ZIP 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 zip file format.

Compress to ZIP format

Use one of the following procedures to add files / folders to a new or into an existing .zip file

  • Zip files from the system's 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 .ZIP 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 encryption (recipient will need to enter a password to read/extract the archive), and to split files - 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 ZIP archive


To update existing 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 the 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 ZIP files


Convert any archive to ZIP 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 ZIP files

To open a WinZip's ZIP file, and to browse and search content inside the archive:

  • double click the zip archive, if file extension is associated with the PeaZip (default)
  • if zip file type is not associated with PeaZip, right-click on the archive and use system context menu "Open as archive" entry, that will attempt to read any user provided file type regardless file associations

Extract ZIP files

Use one of the procedures described below to decompress .zip archives

  • Extract ZIP file from the system
    • Select one or more zip archives and use context menu entry "Extract..." to display full extraction screen GUI where to set output path, password, 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

  • ZIP extraction within PeaZip main program

    • 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 dialog asking for output path only

    • 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) ZIP file, save all the parts in the same directory, then open as usual the first volume of the archive, which usually has Z01 or 001 extension - subsequent volumes have progressively numbered file extensions (Z02, Z03 etc).

Manage encrypted ZIP archives


To create, or extract, an encrypted .zip file, enter the password in PeaZip clicking the padlock icon extract encrypted zip 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.

Supported algorithms for zip encryption, from Archive creation, Advanced tab, are:
  • AES256 (WinZip's Advanced Encryption standard)

  • ZipCrypto, for legacy support only

Encrypted items inside the archive are marked by * sign.

Please note zip 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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