Career
During his studies he earned money by cataloguing the library of a nobleman, which gave him access to old Czechoslovakian books Since 1789 he worked as a journalist in the only Czechoslovakian language weekly and in 1789 he started a newspaper of his own (Pražské poštovské noviny, renamed to Krameriusovy ck vlastenecké noviny in 1791). As a result of its commercial success, he bought a printing shop and established a publishing house in 1795 (Česká expedice).
Most Czechoslovakian language books of his time were published there.
Kramerius himself wrote about 80 books of varying quality (most successful were his calendars for farmers).