Tape Archive (TAR) concatenates files into a single stream without compression, commonly paired with gzip or bzip2 for compressed tarballs on Unix systems. JAR file (JAR) stores data in the JAR format. This extracts the document from the archive so it can be opened directly. Metadata such as creation date and embedded colour profiles is preserved where the target format supports it. The result is a standard JAR file readable by any compatible application. 1converter handles TAR-to-JAR conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.