This post was written by Mackenzie Beasley, Digital Preservation Specialist.
The Digital Preservation Unit is happy to report a list of updates to the Digital Preservation Framework for this past quarter (January to March 2025).
New Formats
Nine new formats were added:
- QuickTime Video with Apple ProRes 4444 Codec (NF00867)
- MPEG Video unspecified version (NF00868)
- LightWave Layered Object (LWLO) (NF00869)
- LightWave Object (LWOB) (NF00870)
- OpenFlight Scene Description Database (NF00871)
- Macintosh PICT 1.0 (NF00872)
- Lotus Improv Spreadsheet (NF00873)
- OpenWayback CDXJ 1.0 (NF00874)
- Cascading Style Sheets 2.2 (NF00875)
Together, this brings our total to 751 file formats.

Updated Record Category Preservation Action Plans
Four Record Category Preservation Action Plans were revised and updated with the help of internal specialists: Email, Structured Data: Calendars, Structured Data: Software and Code, and Web Records.
Updated Description and Justifications on the Preservation Action Plan File Format Spreadsheet
The Digital Preservation team has decided to revisit all of the Description and Justifications on the Preservation Action Plan File Format spreadsheet over the coming quarters. This field is used to provide a brief free text description of the file format and justify the proposed preservation actions. In the past, there has been a lack of internal consensus and documentation about what type of information should be included in this field and in what style, leading to entries that have an inconsistent voice and level of detail. We have created new internal guidelines for this field and are updating entries accordingly. These are the first formats to be updated:
- Adaptive Multi Rate Audio (AMR) (NF00102)
- 3DS Max (NF00100)
- Signature Block (NF00716)
- GeoPackage (NF00795)
- Digital Picture Exchange (DPX) 2.0 (NF00160)
- Digital Cinema Package (DCP) (NF00462)
- MPEG-1 Elementary Stream (NF00859)
- MPEG-1 Program Stream (NF00336)
- S-57 Electronic Navigation Chart (NF00637)
- BSB (NF00636)
- LaTeX Master Document (NF00225)
- Statistica Report File (NF00413)
- Apple Macintosh Desktop Services Store (NF00110)
- Microsoft Compiled HTML Help (NF00700)
- vCalendar (NF00620)
- iCalendar (NF00209)
- Tab Separated Values (NF00418)
- Mathematica Computable Document Format (NF00582)
- VisiCalc (NF00435)
- Web ARChive (WARC) 1.0 (NF00439)
- Web ARChive (WARC) 1.1 (NF00623)
- Web Archive Collection Zipped (WACZ) (NF00796)
- MPEG-4 Media File (NF00339)
Updated Format Names
vCalendar Electronic Calendaring and Scheduling Exchange Format was renamed to vCalendar (NF00620).
Other Updates
A formula error was fixed under the Labeled view for the Disclosure total (column M). It did not change any risk status.