The format (used by 7-Zip ) is widely considered one of the best choices for archiving a "long report" or large document sets because it typically achieves a significantly higher compression ratio than standard ZIP files. Why .7z is "Good" for Reports
: It treats multiple files as a single continuous block, which is highly effective if your report consists of many similar documents or revisions. good.7z
: Solid (this helps if you are archiving many related documents). Does 7z compress better than zip? - Microsoft Community Hub The format (used by 7-Zip ) is widely
: If your report contains sensitive data, 7-Zip offers strong AES-256 encryption , which can also hide filenames within the archive. Recommended Settings for Maximum Reduction Does 7z compress better than zip
If your goal is the absolute smallest file size for a long report, use these settings in the 7-Zip "Add to Archive" dialog : : 7z. Compression level : Ultra.