When comparing 7-Zip vs PeaZip using the same 7z algorithm, their performance is often quite similar, as PeaZip is simply calling the 7-Zip command-line tool in the background. For 7z archives, 7-Zip can also create recovery records, although this feature isn’t as prominently highlighted or as deeply integrated as in some other proprietary archivers. PeaZip integrates the 7-Zip engine, so it can create, extract, and manage 7z archives with the same efficiency and compression ratios as 7-Zip itself. Which is better for file compression, 7-Zip or PeaZip? 7-Zip is generally considered superior for file compression due to its proprietary 7z format, which achieves higher compression ratios.