Recommended Formats Statement

• TIFF (.tif)
• JPEG2000 (.jp2)
• PNG (.png)
• JPEG/JFIF (.jpg)
• Digital Negative DNG (.dng)
• GIF (.gif)

• Photoshop (.psd)
• JPEG2000 Part 2 (.jpf, .jpx)
• Encapsulated Postscript (.eps)

• Scalable vector graphics (.svg)
• AutoCAD Drawing Interchange Format (.dxf)
• Shapefile

• Computer Graphics Metafile (CGM, WebCGM)
• Extensible 3D (X3D)
• 3D Manufacturing Format (3MF)
• Non-proprietary formats endorsed as standards by a professional community or government agency, e.g. IFC, STEP
• Page-layout formats, e.g. PDF/UA (ISO 14289-1-compliant), PDF/A (ISO 19005-compliant), PDF (highest quality available, with features such as searchable text, embedded fonts, lossless compression, high resolution images; includes document formats such as PDF/X)
• PDF/E-1
• Encapsulated Postscript (.eps)
• Proprietary vector formats, e.g., AutoCAD Drawing file Family (.dwg)

• Highest resolution available, not rescaled or interpolated
• Highest bit depth available, 16 bits per channel if available
• Specified color space used in published version
• Uncompressed
• Unlayered

• Lower compression ratios
• Discrete wavelet transform (DWT) preferred to discrete cosine transform (DCT)
• Layered, if supported by preferred or acceptable format

• Includes indexes, study guides or other matter if available
• Also includes annotations, accompanying tabular or textual matter or other interpretive aids

1. As supported by format:
1. Title
2. Creator
3. Creation Date
4. Place of publication
5. Publisher/producer/distributor
6. Contact information
2. Include if available:
1. Common embedded schema (e.g., FGD, ISO 19115)
2. Language of work
3. Other relevant identifiers (e.g., DOI, LCCN, etc.)
4. Subject descriptors
5. Abstracts
6. Key or reference to each data field and technical production information (type of paper, how processed, publisher internal tracking numbers)

• Metadata provided separately in external text or XML-based file

Files must contain no measures (such as digital rights management [DRM] technologies or encryption) that control access to or prevent use of the digital work.

Equal in quality to the published version, best edition or master/primary copy

• Packaging materials equivalent to published form (e.g., binding, box/packaging materials)
• If multiple versions available, provide the most widely distributed edition.
• If limited edition, provide an unnumbered but otherwise identical copy.
• For large items, provide rolled, unfolded.
• Prefer edition with protective coatings.
• Faithful representation of the work as published. Equal quality to publication version.

• Includes indexes, study guides or other matter if available
• Also includes annotations, accompanying tabular or textual matter or other interpretive aids

1. As supported by format:
1. Title
2. Creator
3. Creation Date
4. Place of publication
5. Publisher/producer/distributor
6. Contact information
2. Include if available:
1. Language of work
2. Other relevant identifiers (e.g., DOI, LCCN, etc.)
3. Subject descriptors
4. Abstracts
5. Key or reference to each data field and technical production information (type of paper, how processed, publisher internal tracking numbers)

• STereoLithography (.stl)
• Reflectance Transformation Imaging (.rti)
• Polygon File Format (.ply)
• Wavefront (.obj)

• Includes indexes, study guides or other matter if available
• Also includes annotations, accompanying tabular or textual matter or other interpretive aids

1. As supported by format:
1. Title
2. Creator
3. Creation Date
4. Place of publication
5. Publisher/producer/distributor
6. Contact information
2. Include if available:
1. Common embedded schema (e.g., FGD, ISO 19115)
2. Language of work
3. Other relevant identifiers (e.g., DOI, LCCN, etc.)
4. Subject descriptors
5. Abstracts
6. Key or reference to each data field and technical production information (type of paper, how processed, publisher internal tracking numbers)

Metadata provided separately in external text or XML-based file

Files must contain no measures (such as digital rights management [DRM] technologies or encryption) that control access to or prevent use of the digital work.