ZIP vs 7Z: Why the 7-Zip Format is the Future of Archiving

The ZIP format dates back to 1989. While universal, it is far from efficient for modern data volumes. The 7z format (7-Zip) is a much more powerful open-source alternative. **The LZMA Algorithm**: This is the heart of 7z. It offers a compression ratio often 30 to 50% higher than ZIP. To archive 1 GB of documents, you will often get a 400 MB 7z file compared to 700 MB in ZIP. **Enhanced Security**: 7z allows encrypting not only file content but also the file names themselves within the archive. No one can see what's inside without the password. **Solid Compression**: Unlike ZIP which compresses each file individually, 7z can treat the archive as a single 'solid' block, which considerably improves the compression of similar files (like successive versions of the same document). **Simplified Conversion**: Use PulsConv to migrate your old ZIPs to modern 7z archives and free up space on your servers.