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PEAZIP FREE ARCHIVER > FREQUENTLY ASKED QUESTIONS > ARCHIVE MANAGEMENT > FILE SPLIT AND JOIN

HOW TO HANDLE SPLIT FILES

SPLIT A FILE IN SMALLER PARTS

JOIN (MERGE) SPLIT FILE VOLUMES

MORE INFORMATION ABOUT FILE SPANNING

file split utility



Splitting a file in PeaZip you can select the volume size form a series of pre-set sizes (floppy disk, typical mail attachment maximum size, CD, DVD...) or you can customize it up to byte level.

how to split a file in smaller parts File split is recommended every time it is needed to fit data in a mandatory output size (such as maximum email attachment limit or media support size), rather than proceding with trial and error compression attempts hoping to reduce the output size under that limit, which may not be possible even with best compression and higher settings.
Each message / media will contain up to the specified amout of data, guaranteeing the package can be sent / written to disk without errors.
file spanning

PeaZip offers different, alternative ways to split/join files:
  1. From Explorer you can rightclick on a file and chose to split it from PeaZip's entry in SendTo or Context menu;
  2. Open PeaZip, chose "split file" or "join files" from main menu and provide the input file name (provide the .001 filename for merging back split files).
  3. Add a file to the archive's layout; from "Options" tab select "split" as format and set volume size and optional integrity check algorithm.
If you are splitting a file into multiple removable media, PeaZip will check if the media has enough free space for storing the volumes, and will be asked you to provide a new empty media each time the previous one is full.
Splitting a file does not involve compression, that is usually only marginally efficient on multimedia files, like ie. MP3, OGG and other audio formats, or AVI, MPEG, DIVX and other video formats.
If you prefer to use compression, you can add the file(s) to a ZIP or 7Z archive and chose to split (cut) the archive in volumes of a fixed size, in order to keep them below the size limits of a support or mail attachment (see documentation).
This is preferable also when handling multiple multimedia files in order to store them in a single archive, split in fixed sized volumes, rather than having to split each file separately: in this case you can go in "Advanced" tab when creating the archive and select no compression (set compression to "store" level)

Join (merge) split file volumes


how to merge a spanned archive

When you receive a multipart file or archive, to join the data back to obtain the original file, move or copy all the parts of the file in the same folder before proceeding with extraction

work with 001 file
Open the first archive's part with PeaZip, i.e. doubleclick on the first volume wich is usually identified with extension .001, .Z01, R01, .PART1 or similar.
Now you can extract it wit "Extract" or "Extract all" from PeaZip's toolbar or context menu, or just drag content from PeaZip to the system
Alternatively, righclick on the first volume of the spanned file and use "Extract" or "Extract here" PeaZip's entries in system's context menu

More information about file spanning


Articles related to splitting files or compressed archives in multiple parts:

ACE EXTRACTION

EXTRACT 7Z FILE

FREE ARCHIVER

ONLINE HELP

RAR R01 FILE

HANDLE ZIP FILE

ZIPX EXTRACTION

External online resources: entropy definitioninformation theory compression on Wikipedia, discussion of e-mail attachment limitmaximum email size allowed.

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