WinRAR 是一个压缩实用程序，它完全支持 RAR 和 ZIP 文件并能够解压缩 CAB、ARJ、LZH、TAR、GZ、ACE、UUE、BZ2、JAR、ISO、7Z、Z 格式的文件。它一贯比竞争对手更好地压缩，节省磁盘空间和传输成本。
WinRAR 提供使用鼠标和菜单以及命令行接口的图形交互界面。相比许多其他归档压缩软件，WinRAR 包含的特殊的“向导”模式，通过一个简单的问答程序就可以让您即时使用了基本的存档压缩功能，简单易用。
WinRAR 为您提供使用 AES （高级加密标准）的 128 位密钥的行业存档加密技术。它支持的文件和压缩包大小达 85890 亿GB。它还提供创建自动解压和 Multivan 压缩包的功能。使用恢复记录和恢复卷，您甚至能重建物理受损的压缩文件。
Added support for Unix extended timestamp extra field (0x5455 extra field tag) in ZIP archives. Such timestamps are used by InfoZip to store UTC file time additionally to standard ZIP local time. Now WinRAR reads and sets such timestamps when extracting.
"Run", "Open in associated application", "Show archive contents" items are added to right click menu in WinRAR file list. So you can right click SFX archive or archive file with non-archive extension like .docx and choose if you wish to browse its contents, to run or open it. These items are present only in the file management mode and are not available inside of archives.
"File types to open as archives first" option is moved from "Settings/Archives" to "Settings/Compression". Now it works only outside of archives to avoid conflicts with "Settings/Viewer/ Unpack everything for" option.
Default folders for archives and extracted files are moved from "Settings/Compression" to "Settings/Paths" dialog page.
Some files in TAR archives could be unpacked with full paths even if "Extract relative paths" option was enabled.