The cabinet file format, shortened CAB, is an archive file format that was developed for the Microsoft Windows operating system. The format supports the lossless family of data compression algorithms as well as embedded digital certificates that facilitate data integrity. Archives created using the CAB format have the filename extension .cab and are recognized by the operating system through the identifying 4 bytes in the header. CAB enjoys support by other Microsoft technologies such as the Setup APIs, Windows Installer and others. In fact, some earlier integrated development environments developed by Microsoft could create setup files that were organized as CAB files.
The .rar filename extension is a popular and partially open archive file format associated with the compression and decompression tool WinRAR. The format was developed by Eugene Roshal with its initial release in 1993. It, like many other archive formats, acts as the compressed data container for one or several files. The archive format can maintain the directory structure of the compressed archive even when unpacked to a directory. The RAR file format supports multi volume file compression where an archive is saved as a sequence of several files of a given size.
FreeFileConvert uses tuned encoding for CAB to RAR conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload CAB files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized RAR results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent RAR audio with dependable progress tracking.
The CAB format can use any of the three compression algorithms namely DEFLATE (a common compression algorithm supported by many other archiving and compression formats), Quantum compression, or the alternative LZX. A CAB file can contain at a maximum 65535 files in a maximum 65535 folders. The path structure used in the format does not allow the storage of empty folders.
The RAR archive format supports compression, file spanning, and error recovery. Compression is carried out using a prediction by partial matching algorithm and the lossless compression algorithm LZSS. The RAR file format has a range in file size from as low as 20 bytes to 8 exbibytes less 1. It also supports AES encryption at 256bits as well as the CRC32 checksum and BLAKE2 file hash algortihms.
Upload your archive file in the CAB format from your device, Dropbox, or Google Drive.
Select RAR as the output format and click Convert. Adjust optional settings if needed.
Download the converted archive file. Each file stays available for up to 5 downloads.