Background For some reason, you may need old OpenStreetMap dump for analysis. However, the oldest planet dump (after ODbL license change) is only provided using .osm.bz2 format and very slow to process. osm.pbf or o5m[1] formats are preferred instead. So I converted the format and put them here for your convenience. Detail The source data source is from planet.osm.org[2] osm.pbf and o5m files are both converted using osmconvert [3] o5m.gz is compressed using 7zip (-tgzip -mx7) ref: [1] http://wiki.openstreetmap.org/wiki/O5m [2] http://planet.osm.org/planet/2012/planet-120912.osm.bz2 [3] http://wiki.openstreetmap.org/wiki/Osmconvert ------------------- if you are interested in compression size 349121383416 planet-120912.osm (uncompressed) 24475739942 planet-120912.osm.bz2 (original file) 33982783081 planet-120912.o5m 20127831060 planet-120912.o5m.zst (zstd) 19729437545 planet-120912.o5m.bz2 19203802705 planet-120912.o5m.gz (pigz) 19183520432 planet-120912.o5m.gz (pigz -9) 18937442494 planet-120912.o5m.gz (7zip -tgzip) 18889191444 planet-120912.o5m.gz (7zip -tgzip -mx7) 18113447332 planet-120912.o5m.zst (zstd -19 -T4) 17963173382 planet-120912.o5m.zst (zstd --ultra -22 -T4) 17927680062 planet-120912.osm.pbf 16745673500 planet-120912.o5m.xz