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| `source` attribute | `"geotiff"` |
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| `source` attribute | `"geotiff"` |
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| Output type | Image Grids, Data Grids |
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| Output type | Image Grids, Data Grids |
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This source can be used to display GeoTiffs.
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This source can be used to display GeoTiffs. Currently only uncompressed GeoTiffs and the compression methods PackBits and LZW are well-tested. There is a known issue that causes Deflate-Compressed GeoTiffs to be displayed incorrectly. The source will try to read the embedded or an external thumbnail pyramid to speed up the loading times. The data will be extracted from the file as needed, so loading times might be longer if large images are stored as strips instead of tiles or if the thumbnail pyramid is missing. You can add a thumbnail pyramid to your files with `gdaladdo`:
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Currently only uncompressed GeoTiffs and the compressions PackBits and LZW are well-tested.
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There is a known issue that causes Deflate-Compressed GeoTiffs to be displayed incorrectly.
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The source will try to read the embedded or an external thumbnail pyramid to speed up the loading times.
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The image will not be read into RAM completely, so loading times might be longer if large images are stored as strips instead of tiles.
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You can add a thumbnail pyramid to your files with `gdaladdo`:
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```bash
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```bash
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gdaladdo -clean file.tif
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gdaladdo -clean file.tif
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