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GeoTIFF Merger

Mosaic several GeoTIFFs into one — entirely in your browser

Input files

Drop GeoTIFFs here, or click to choose

Output settings

Target CRS Output pixel size

Resampling

Black collar / nodata handling

Transparency is written as an alpha band, never baked into the pixel values. Use collar detection only when the source has black borders burnt in and no alpha of its own.

Overlaps

Only where both scenes have data. A transparent pixel never covers anything.

Output

Compression JPEG quality

File name

Mosaic

Add two or more GeoTIFFs. Their footprints appear here as soon as they are read, so you can see how they fit together before merging anything.