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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<meta name="AUTHOR" content="PeaZip Free Archiver Utility">
<meta name="DESCRIPTION"
content="What is ACE file format, native WinAce archives type extension. What are ACE files features and specifications.">
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<h1 style="text-align: center;"><big><big><big><a
name="ace_archive"></a>ACE file extension</big></big></big></h1>
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<div style="text-align: left; color: rgb(0, 0, 0);">
<h2><big><big><big><a name="ace_extension"></a><a
href="ace-file-format.html#ace_archive">ACE file type: WinAce archive
format</a></big></big><br>
</big></h2>
</div>
<br>
<div style="text-align: left;"> </div>
<div style="text-align: left;"> </div>
<a name="what_is_ace_file"></a>ACE extension designates a
file archiving and
compression format developed by Marcel Lemke
for <span style="font-weight: bold;">WinAce</span>, a
shareware closed source software released as GUI program
for Microsoft Windows platform only (unace de-compressor is available
as command line tool both for Windows and Linux platforms) developed as
early alternative to
PKZip / WinZip ZIP format.<br>
<br>
ACE standard features a compression ratio higher than <a
href="zip-file-format.html"><span style="font-weight: bold;">ZIP file
format</span></a> (similar but usually
inferior compared to <a href="what-is-rar-file.html"><span
style="font-weight: bold;">RAR format</span></a>)
and supports quite robust 160bit Blowfish encryption, implementation
based on Bruce
Schneier's Blowfish
symmetric-key block
cipher, developed by Schneier before AES process candidate finalist
Twofish cipher.<br>
<a name="ade_file_format_specifications"></a>Read more
about .ace file type: <a target="_blank"
href="http://en.wikipedia.org/wiki/WinAce">WinAce
software<img title="WinAce Wikipedia page" alt="winace wiki"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
href="https://en.wikipedia.org/wiki/Blowfish_%28cipher%29">Blowfish
cypher<img title="What is Blowfish cipher" alt="Blowfish cypher wiki"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, and <a
target="_blank"
href="http://en.wikipedia.org/wiki/ACE_%28file_format%29">ACE file
extension<img title="ACE format on Wikipedia" alt="ACE format wiki"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> Wikipedia
pages.<br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td
style="text-align: right; vertical-align: middle; width: 64px;">
<h2><span style="font-weight: bold;"><img
title="What is ACE file format, native WinACE archives extension"
alt="ace file type" src="file-format/information.png"
style="width: 48px; height: 48px;"><br>
</span></h2>
</td>
<td
style="font-style: italic; vertical-align: middle;"><span
style="font-style: italic;"></span><span style="font-style: italic;"></span>PeaZip
features <a href="ace-files-utility.html">read-only support for
ACE format</a> (open, browse, extract ACE files, and <a
href="convert-files.html">convert existing
.ace archives</a> into any write supported archive format), and due the
closed-source nature of the software it is required the separate <a
href="peazip-add-ons.html">UNACE Plugin</a>.<br>
On
Windows platform UNACE plugin is based on unacev2.dll, the last
component made officially available from WinAce team, that is currently
abandoned and unpatched since many years ago, and known to be not
longer safe to use due critical unpatched
vulnerabilities.<br>
Out of the box, PeaZip does not come with unacev2.dll (which
requires separate manual download and installation from user) so it is
immune to said vulnerabilities. No version of PeaZip will attempt to
automatically download or install UNACE plugin, nor will use UNACE
plugin (even if installed) to open ace files disguised for other
formats - e.g. changing file extension.<small> <br>
</small>Help > About screen reports if UNACE
plugin is installed and features a button for quick removal of the
plugin.<br>
<big><br>
</big>
<h3><big><img
title="ACE format features and specifications"
alt="ace file format features" src="extract-archive.png"
style="width: 112px; height: 45px;"></big></h3>
</td>
</tr>
</tbody>
</table>
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style="background-color: rgb(72, 136, 248); width: 100%; text-align: left;"
border="0" cellpadding="0" cellspacing="1">
<tbody>
<tr style="color: rgb(245, 245, 245);">
<td colspan="1" rowspan="1"
style="vertical-align: top; background-color: rgb(72, 136, 248);">
<table style="width: 100%; text-align: left;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="vertical-align: top; width: 24px;">
<br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;">
<br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<table style="width: 100%; text-align: left;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td
style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">
<h3><big><big><big><big><big><a
name="what_is_ace_file_type"></a>.ACE</big></big></big></big></big></h3>
</td>
<td
style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">Author
Marcel Lemke<br>
</td>
</tr>
</tbody>
</table>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<h4><big>SPEED <img alt="ace format features"
title="ace compression speed" src="zip-files/star3.png"
style="width: 80px; height: 16px;"></big></h4>
Ace format features average speed. Compression and decompression are
more computing intensive
than in ZIP format.<br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<h4><big>COMPRESSION
RATIO <img alt="ace format specifications"
title="ace compression ratio" src="zip-files/star3.png"
style="width: 80px; height: 16px;"></big></h4>
Ace archives features an average compression ratio. Provides better
compression than Deflate-based ZIP, but
inferior to modern formats as 7Z and RAR.</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<h4><big>ADVANCED
OPTIONS <img alt="ace format specs" title="ace format options"
src="zip-files/star3.png" style="width: 80px; height: 16px;"></big></h4>
Ace format features a reasonable choice of advanced options. Developed
as capable all-around replacement for ZIP format,
but not updated in recent years.<br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<br>
<p><span style="font-weight: bold;">Synopsis: What is ACE
file format, native WinAce archives type extension. What are ACE files
features and specifications. in
terms of compression ratio and speed, advanced options, encryption.<br>
</span></p>
<p><span style="font-weight: bold;">PeaZip > FAQ >
ACE file extension, WinAce archive format<br>
</span> </p>
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<td style="vertical-align: top; width: 25%;"><small> <img
alt="what are ace archives" src="titles.png"
style="width: 129px; height: 2px;"><br>
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