Set the Compression Level to "Ultra" and use the LZMA2 method.
Unlike WinRAR or WinZip, 7-Zip is completely free for both personal and commercial use and never "nags" for payment. MED.7z
7-Zip is frequently cited by experts as the most effective tool for compression due to several key factors: Set the Compression Level to "Ultra" and use
The native .7z format uses the LZMA and LZMA2 algorithms, which often achieve much higher compression ratios than standard ZIP or RAR formats. MED.7z
The PPMd method is often faster and more efficient specifically for large text datasets.