Optimize and convert your 7z (rar, zip…) to smaller 7z archives! Auto switch PPMD/LZMA/LZMA2/DEFLATE/DELTA/BZIP2 during creation 7z-archives (+ improved (tuned) lzma for jpg, bmp, wav, exe…) Full compatible with original 7z format. High compression ratio – better than non tuned 7-zip original. Batch processing of archives (drag-n-drop). Fast and Ultra modes for repacking! Reduce the size of your old and new archives in one click! Save space on your computer or cloud storage, and don’t overpay for storing your files!