Geodocs Tools
COG Validator
Drop a GeoTIFF and find out whether it is a valid Cloud Optimized GeoTIFF (COG) — and what is missing if not. 100% in-browser analysis; your files never leave your device.
Need to convert to COG?
Geodocs converts and serves your rasters as Cloud Optimized GeoTIFFs automatically, with maps, reports, and dynamic forms for field teams.
Discover GeodocsA Cloud Optimized GeoTIFF is a GeoTIFF laid out internally in tiles and with embedded overviews (pyramids), so viewers can read only the part of the file they need via HTTP range requests — no tile server. This validator inspects your file’s header and tells you whether it meets the COG criteria: georeferencing, internal tiling, overviews, and compression.
A valid COG must be internally tiled (not striped), have embedded overviews, and be georeferenced (carry a CRS). Compression (DEFLATE/LZW) is recommended but not required. This tool checks each of these and shows you exactly what is missing.