File compression method Submitted None Data Dictionary Vocabularies Eionet Data Dictionary CCITT Group 3 - Lossless compression for 1-bit data. Lossless compression for 1-bit data. It is also known as T4, T.4, Fax3, Group 3, G3, or ITU-T Fax Group 3. Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method CCITT Group 4 - Lossless compression for 1-bit data. Lossless compression for 1-bit data. It is also known as T6, T.6, Fax4, G4, Group 4, or ITU-T Fax Group 4. Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method CCITT modified Huffman RLE. CCITT modified Huffman RLE. Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method JPEG Lossy compression that uses the public JPEG compression algorithm. If you choose JPEG, you can also specify the compression quality value. This compression can be used for JPEG files, TIFF files, and geodatabases. The valid compression quality value ranges are from 0 to 100, with 75 being the default. Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method LZ77 Lossless compression that preserves all raster cell values. This is the default Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method LZW Lossless compression that preserves all raster cell values Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method No compression applied. No compression on files. Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method PackBits PackBits compression for TIFF files. Valid Data Dictionary Vocabularies Eionet Data Dictionary File compression method