I extracted the content of the main LibreOffice_7.6.3_Win_x86-64.msi archive (345MB) with msiextract. The below directory contains offline translated help for the nlpsolver extension : share/extensions/nlpsolver/help This could be moved into their MSI package files for offline translated help. If the nlpsolver extension isn't installed, the MSI translated help package could install the translation anyway (or provide an option in order to unselect the nlpsolver translation, but still selected by default). In order to estimate the saving into the main MSI archive (with LZX compression), the below command build a 1,2 MB file : 7z a -tzip -mm=LZMA -mx=9 -mmt=off nlpsolver-translated-help.zip share/extensions/nlpsolver/help This would reduce the size of the main MSI archive by roughly 1 MB.