You can download best freeware soft here!

Optimize and convert your ZIP archves and other files (ZIP, DOCX, XLSX, PPTX, XLSM, XLSB, DOCM, PPTM, ODT, ODS, ODP, ODG, ODF, ODB, APK, JAR, WAR, EAR, XPI, FB3, EPUB, CBZ) in smaller size! Program optimizes your file to new one with «_optimized» name ending (source file will remain intact). Maximum compression for files without quality loss — up to 10-30%! Full compatible with original format. The ZIP archive or other file is reduced by repacking its contents with a stronger compression algorithm. Batch processing of files (drag-n-drop). Compression mode: good (faster) or best (slowly). The main difference between Ultra7z ZIP Optimizer and other similar repackaging programs is that it saves quality of all pictures inside your documents. Full stats — saved disk space (Mb) total and for each archive in the list.

Run only 1 active instance of the program!.

Features:
— Maximum compression for ZIP archives and other files without quality loss (ZIP, DOCX, XLSX, PPTX, XLSM, XLSB, DOCM, PPTM, ODT, ODS, ODP, ODG, ODF, ODB, APK, JAR, WAR, EAR, XPI, FB3, EPUB, CBZ) — up to 10-30%!
— Full compatible with original format.
— High compression ratio — better than original program.
— Batch processing of files (drag-n-drop).
— Compression mode: good (faster) or best (slowly).
— You can set «Low CPU usage (only 2 threads)» or uncheck it for best perfomance.
— You can set «Run in background (without console output)» or uncheck it for manual process control.

It is a freeware compressor/optimizer for:
1. ZIP archives (compressed (zipped) folder, WinZip, WinRar, 7-zip and other archivers).
2. Documents MS Office (DOCX, XLSX, PPTX, XLSM, XLSB, DOCM, PPTM)(word DOCX, tables excel XLSX and presentations powerpoint PPTX).
3. Documents Libre/OpenOffice (ODT, ODS, ODP, ODG, ODF, ODB)(Writer ODT, tables Calc ODS, presentations Impress ODP, pictures Draw ODG, Base ODB, formulas Math ODF).
4. Apps for Android smartphones (APK).
5. E-Books (EPUB, FB3).
6. Comics (CBZ).
7. Java files (JAR, WAR, EAR).
8. Mozilla Firefox Extensions (XPI).

Current archive has its own status in the list: «running», «done» and «saved space».
Full stats:
1. Number of optimized files (total and current session).
2. Files in the queue (quantity).
3. Saved disk space (Mb) total and for each archive in the list.
(You need to save files «ressize.txt» and «resnumbers.txt» before updating, if you want to save the overall statistics («Total»)).

Size (7z): 4 Mb