Geodocs Tools
GeoTIFF / COG Viewer
Drop a GeoTIFF or paste a URL and view it on an interactive map. Any CRS is reprojected automatically. 100% in your browser — files never leave your device.
Serve your rasters as COGs
Geodocs converts and serves your GeoTIFFs as Cloud Optimized GeoTIFFs automatically, with maps, reports, and dynamic forms for field teams.
Discover GeodocsA GeoTIFF is a TIFF image with embedded georeferencing — a coordinate system and the real-world position of every pixel — so it lines up with a map. A Cloud Optimized GeoTIFF (COG) is the same format laid out in internal tiles with overviews, so a reader can decode just the tiles it needs instead of the whole image. This tool opens both and draws them on an interactive map: a file you drop in is read tile by tile. A URL is downloaded in full before rendering, so it works best for small rasters. For a deeper look at what makes a file a COG — internal tiling, overviews, and why it matters — see our Cloud Optimized GeoTIFF guide.
Drop a .tif or paste a URL and the raster is reprojected from its native coordinate system (UTM, SIRGAS 2000, or anything proj4 knows) into web map coordinates automatically — no desktop GIS, no tiling server. A COG you drop in draws almost immediately, because only the tiles and overviews in view are decoded. Loaded by URL, it takes as long as the download does.
If a file is striped instead of internally tiled, the whole image has to be decoded at once, which is slow and memory-heavy for large rasters. The viewer detects this and warns you before rendering. To make large rasters fast everywhere, convert them to COGs — Geodocs does this automatically and serves them for you.
Yes. Everything runs in your browser. Local files are read on your device and never uploaded. A file loaded by URL is fetched straight from the host you name. Nothing is sent to a Geodocs server.