What is a .O5C file?
O5C is a binary OpenStreetMap change file in the o5m family.
- Did you know
- O5C records the edits needed to update an OpenStreetMap dataset.
- An O5C is the change-file twin of O5M, distinguished by an “o5c2” header marker that flags it as a set of edits rather than a full dataset.
- Both formats were invented for the osmconvert, osmfilter and osmupdate command-line tools.
- What Analyser reads
- Identify and read more GIS and mapping files: OpenStreetMap o5m/o5c binaries, Esri layer files (.lyrx ArcGIS Pro CIM JSON, .lyr ArcMap), QGIS projects (.qgs/.qgz - version, CRS, layer list), shapefile spatial indexes (.sbn/.sbx), GMT/GDAL colour palettes (.cpt) and ENVI band-interleaved rasters (.bil/.bip/.bsq).
- Depth of analysis
- .O5C is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .O5C file
- Drag a .O5C file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.