[polo2137]

OK! So I've managed to compress WiktionaryPL2.dict to WiktionaryPL2.dict.dz, the file size is 398,1 MB so its great!
I transfered WiktionaryPL2.dict.dz , WiktionaryPL2.idx and WiktionaryPL2.ifo to KOReader. The dictionary is visable in the menu in KOReader and I've set it to use it but it doesnt work. Simply says "no definition found" when looking up a word. I didnt manage to use sdcv because I dont know how same with merge_syns=True.

I tried deleting .idx and .ifo files with only .dict.dz and then KOReader cant even see this dictionary, so I've tried deleting .dict.dz and left only .idx and .ifo and KOReader can see it. So the .dict.dz is not even noticed by KOReader.

(Im using gzip)
gzip WiktionaryPL2.dict
mv WiktionaryPL2.dict.gz WiktionaryPL2.dict.dz