is a free cross-platform file archiver and splitter that provides an
portable GUI for many Open Source
technologies like 7-Zip, FreeArc, PAQ, UPX...
ARC, BZ2, GZ, *PAQ, PEA,
QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP files
Open and extract
ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX files and more...
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.
FAQ / FILE MANAGER
> HOW TO HANDLE SPLIT
What is file spanning
Splitting a file
is cutting the data in span parts of desired size.
Usually, this allows a large file to fit on multiple smaller supports
(FD, CD, DVD...) or to fit in multiple email attachments (or upload
chunks) if the file is larger than maximum allowed attachment or upload
In PeaZip you can
select the volume size form a series of pre-set sizes (floppy disk,
attachment maximum size, CD,
DVD...) or you can customize it up to byte
split is recommended every time it is needed to fit a large amount of
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 file size under that limit, which may not be possible even
best compression algorithms and highest settings.
message / media will contain up to the specified amout of data,
guaranteeing the package can be sent / written to disk without errors,
fitting in desired max support / attachment size.
More online resources: split Unix
Wikipedia, discussion of e-mail
How to split files
different, alternative ways to split & join files:
If you are
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.
- Add files and
folders to the archive's layout (i.e.
select it and click Add
- Click volume size dropdown menu (by default set on
"Single volume, do not split") in order to split the output to multiple
volumes, chosing from custom or pre-set sizes (recommended email
attachment sizes, CD, DVD, etc): this method allows to combine the
benefits of archiving (consolidating multile input files & folders
into a single output stream), compression (reducing disk occupation
eliminating data redundancy), and file spanning (keeping the output in
volumes smaller than a given maximum size).
- Alternatively, change archive type option (below
output path option) to
"Split" and set volume size and optional integrity
- Open PeaZip, chose File manage > File Tools >
"split file" or "join files"
main menu and provide the input file name (provide the first volume of
the set, usually the file with .001 extension
for merging back spanned archives).
- From Windoiws file explorer you can rightclick on a
to split it from PeaZip's entry in SendTo or Context menu;
Purely 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.
As said above, if you prefer to combine splitting with 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
in order to keep them below the size limits of a support or mail
attachment: this is preferable also when handling multiple large
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 set minimum compression or no
compression ("store" level) to speed up the process avoiding to
compress scarcely compressible data: hints how to improve file
compression, how to
reduce size of images
PeaZip fully supports, for
splitting and merging, raw split format -
binary data plainly cut in pieces of the exact specified size - that
can be created, also, by utilities like 7-Zip/p7zip, HJSplit, and
"split" Unix command.
This file merge process will re-build the original, larger, file or
multiple smaller volumes fitting a mandatory maximum size.
Hint: if sent data is
correctly received, as role of thumb, all volumes of the spanned set
should have same size - matching the desired size limit - save the last
volume that will usually be smaller containing only the remaining data
to complete the content - but if a real error detection control is
needed to validate integrity of received data, use file hasing (or
checksum) to verify volumes.
PeaZip can process, only for
merging, WinZip spanned archives (.Z01)
and WinRar spanned archives (.R01, or .partX.rar).
|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
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 - please note some times counter may have set to
start from 000 (R00,
Now you can extract it with
"Extract" or "Extract all" from
PeaZip's tool bar or context menu, or just drag content from PeaZip to
righclick on the first volume of the spanned file and
use "Extract" or "Extract
here" PeaZip's entries in system's context menu