Sustainability of Digital Formats: Planning for Library of Congress Collections
Sustainability of Digital Formats: Planning for Library of Congress Collections |
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | TIFF, Uncompressed Bitmap |
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| Description | A tag-based file format for storing and interchanging raster images; in this subtype, TIFF wraps an uncompressed bitmap. |
| Production phase | Most often an initial-state or middle-state format; may serve as final-state format. |
| Relationship to other formats | |
| Subtype of | TIFF_6, TIFF, Revision 6.0 and earlier |
| Has subtype | TIFF_UNC_EXIF, TIFF Uncompressed File with Exif Metadata |
| Contains | Uncompressed image bitmap |
| LC experience or existing holdings | See TIFF_6. |
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| LC preference | See the Library of Congress Recommended Formats Statement for format preferences for still image works. |
| Disclosure | See TIFF_6 |
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| Documentation | See TIFF_6 |
| Adoption | TIFF_UNC is widely deployed in digital library projects as a master format. For example it is the preferred format in guidelines from the Florida Academic Library Services Cooperative and the University of Minnesota Digital Conservancy. Not supported by all browsers in native format but, since the early 2000s, new PC configurations usually include a viewer. TIFF_UNC is the preferred format for color or grayscale raster images created by digitization in the Technical Guidelines for Digitizing Cultural Heritage Materials: Creation of Raster Image Master Files from the Federal Agencies Digitization Guidelines Initiative (www.digitizationguidelines.gov). |
| Licensing and patents | None for TIFF_UNC |
| Transparency | Transparent. |
| Self-documentation | For capability from the TIFF specification itself, see TIFF_6. For a valuable extension, see TIFF_UNC_EXIF. |
| External dependencies | None |
| Technical protection considerations | None |
| Still Image | |
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| Normal rendering | Good support. |
| Clarity (high image resolution) | See TIFF_6 |
| Color maintenance | See TIFF_6 |
| Support for vector graphics, including graphic effects and typography | See TIFF_6 |
| Functionality beyond normal rendering | See TIFF_6 |
| Tag | Value | Note |
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| Filename extension | See related format. |
See TIFF_6 |
| Internet Media Type | See related format. |
See TIFF_6 |
| Magic numbers | See related format. |
See TIFF_6 |
| Pronom PUID | See notes |
See https://www.nationalarchives.gov.uk/PRONOM/fmt/353 for TIFF. Pronom does not differentiate versions of TIFF. |
| Wikidata Title ID | See notes |
See https://www.wikidata.org/wiki/Q215106 for TIFF Family. |
| General | |
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| History |
See TIFF_6
See also TIFF_6
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