PFR

File Format
Name	PFR
Ontology	Electronic File Formats Fonts PFR
Extension(s)	.pfr
MIME Type(s)	application/font-tdpfr, application/vnd.truedoc
Released	~1997

This article is about the font format. For another PFR format, see PaintShop Pro.

PFR (Portable Font Resource) is an outline font format developed by Bitstream. It was sometimes used for embedded fonts on web pages.

The terminology isn't easy to make sense of. Apparently, the technology surrounding PFR is called TrueDoc, at least when it isn't called Dynamic Fonts or Bitstream WebFont technology instead. The term TrueDoc might sometimes be used to mean just the PFR file format.

PFR/TrueDoc was supported by Netscape 4.03, and later 4.x versions.

Identification

Files begin with ASCII "PFR0".

Some versions of the file command imply there is a newer version that begins with "PFR1", but it's not clear that such a format ever existed outside of a laboratory.

Specifications

• PFR Specification v1.2 (from archive.org)
• PFR Specification v1.1 (from archive.org)
• PFR Specification v1.0 (from archive.org)
• RFC 3073: Portable Font Resource (PFR) - application/font-tdpfr MIME Sub-type Registration

Samples files

• truedoc.com: Available PFRs (from archive.org)
  • List of PFR files archived at archive.org

Links

• Bitstream's PFR information page (from archive.org)
• truedoc.com website (from archive.org)
• Wikipedia: TrueDoc
• Wikipedia: Bitstream Inc.