Choose a cloud service provider:
FreeFileConvert uses tuned encoding for RAR to JAR conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload RAR files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized JAR 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 JAR audio with dependable progress tracking.
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.
A .jar file contains the Java source code, a manifest file, XML based configuration data, JSON-based data files, images and sound clips as well as security certificates. These files use a standard compression algorithm and hence can be easily opened by extracting the contents of the file with a standard decompression tool like the tool used to extract .zip extension files.
Upload your archive file in the RAR format from your device, Dropbox, or Google Drive.
Select JAR 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.