ما هو PFB؟ شرح تنسيق الخط الثنائي PostScript Type 1

PFB (Printer Font Binary) هو تنسيق ثنائي من Adobe لخطوط PostScript Type 1، يخزن بيانات المخطط بشكل مضغوط؛ تم إيقاف دعم Type 1 من قبل Adobe.

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Font

ما هو PFB؟ شرح تنسيق الخط الثنائي PostScript Type 1

حاوية ثنائية من Adobe لخطوط المخطط PostScript Type 1.

آخر تحديث:

Year1985
TypeOutline font
UsageLegacy PostScript fonts

What is it?

PFB, short for Printer Font Binary, is a binary file format created by Adobe Systems for storing PostScript Type 1 outline fonts. Type 1 fonts were introduced by Adobe as part of the PostScript page description language and came into wide use with the Apple LaserWriter in 1985.

A PFB file is a compact wrapper around the data that would otherwise appear in an ASCII PFA file. It is organized as a series of segments, each marked as ASCII text or binary, where the binary portions, including the encrypted charstring outlines, are stored as raw bytes rather than as hexadecimal text. This makes PFB files roughly half the size of equivalent PFA files. On Windows, a PFB is paired with a PFM metrics file.

Technical Specifications

DeveloperAdobe Systems
File Extension.pfb
MIME Typeapplication/x-font-type1
Released1985 (PostScript Type 1)
TypePostScript Type 1 outline font

Pros & Cons

Advantages

تخزين مضغوط

Storing the binary section as raw bytes makes a PFB about half the size of the equivalent ASCII PFA file.

مخططات عالية الجودة

Type 1 fonts use cubic Bezier curves and hinting for crisp rendering, especially in print.

سلالة صناعة الطباعة

As the foundation of professional PostScript printing, Type 1 fonts were a print and publishing standard for decades.

دعم واسع للإرث

Long supported across major operating systems and PostScript devices.

Disadvantages

تم إيقافه رسميًا

Adobe ended authoring and support for Type 1 fonts in its applications in January 2023, encouraging migration to OpenType.

مجموعات أحرف محدودة

Type 1 fonts typically hold far fewer glyphs than modern OpenType fonts and lack advanced typographic features.

ملفات مقسمة

On some platforms a font requires separate outline and metrics files, complicating management.

When to Use It

PFB is encountered mainly in legacy print and font-archival contexts.

تدفقات عمل الطباعة القديمة

Older professional publishing and prepress systems relied on PostScript Type 1 fonts in PFB form.

تحويل الخطوط

PFB files are converted to OpenType or other modern formats to keep older typefaces usable.

الحفاظ الرقمي

Archives retain PFB fonts to reproduce historical documents and designs accurately.

How to open a PFB file

PFB files, representing the PostScript Type 1 Binary Font Format, can be managed through various software categories, including professional tools, free/open-source options, browser-based solutions, and built-in operating system utilities. Professional software typically offers advanced features for font design and editing, making it suitable for graphic designers and typographers. Free and open-source tools cater to users who need basic functionality without financial investment, while browser-based solutions provide accessibility without installation. Built-in utilities may offer limited capabilities for quick viewing or conversion.

When selecting software for PFB files, key decision factors include feature fidelity, the distinction between editing and viewing capabilities, cost models, and platform compatibility. Users should consider whether they need to edit fonts or simply view them, as this will influence the choice of software. Export needs are also crucial, as some applications may only allow saving in specific formats, while others offer broader compatibility. In some cases, converting PFB files to more widely supported formats may be a better option for users not needing extensive editing features.

FontForge 2023

Windows, macOS, LinuxFree (GPL)

FontForge is a powerful open-source font editor that supports PFB files, allowing users to view and modify font data. It provides a comprehensive set of tools for font design, including glyph editing and kerning adjustments, ensuring high fidelity when working with PFB formats.

الميزات الرئيسية
  • Full glyph editing capabilities
  • Kerning and spacing adjustments
  • Support for multiple font formats
  • OpenType and TrueType conversion
  • Batch processing of font files
نقاط القوة
  • Comprehensive editing tools for PFB
  • Active community and extensive documentation
  • No cost for full functionality
القيود
  • Steeper learning curve for beginners
  • User interface can feel outdated

يصدّر إلى: OTF, TTF, SVG, WOFF

الأفضل لـ: FontForge is ideal for users needing extensive font editing capabilities without cost.

زيارة FontForge →

Adobe Font Development Kit for OpenType (AFDKO) 2023

Windows, macOSFree

AFDKO is a suite of tools for font developers that includes utilities for working with PFB files. While primarily aimed at professionals, it allows for detailed manipulation of font data and supports conversion between various font formats.

الميزات الرئيسية
  • PFB file conversion to OpenType
  • Font validation and testing tools
  • Scripting capabilities for automation
  • Support for multiple font formats
  • Detailed font metrics analysis
نقاط القوة
  • Professional-grade tools for font development
  • Strong support for OpenType workflows
  • Free to use with robust capabilities
القيود
  • Not user-friendly for casual users
  • Limited graphical interface

يصدّر إلى: OTF, TTF, WOFF, WOFF2

الأفضل لـ: AFDKO is best for professional font developers needing advanced tools for PFB manipulation.

زيارة Adobe Font Development Kit for OpenType (AFDKO) →

Glyphs 3.0

macOSOne-time $299

Glyphs is a professional font creation tool that supports PFB files, allowing for detailed design and editing of typefaces. It provides a user-friendly interface and high fidelity in font rendering, making it suitable for designers focused on custom font creation.

الميزات الرئيسية
  • Intuitive interface for font design
  • Real-time preview of font changes
  • Support for variable fonts
  • Extensive glyph editing tools
  • Export to multiple font formats
نقاط القوة
  • Highly intuitive for designers
  • Real-time editing and preview capabilities
  • Strong community and resources
القيود
  • High one-time purchase cost
  • Mac-only platform limits accessibility

يصدّر إلى: OTF, TTF, WOFF, SVG

الأفضل لـ: Glyphs is perfect for professional designers seeking a robust and intuitive font design tool.

زيارة Glyphs →

Transfonter 2023

All (browser)Free / Paid

Transfonter is a web-based tool that allows users to convert PFB files into web-friendly font formats. It is particularly useful for web developers looking to integrate custom fonts without needing complex software installations.

الميزات الرئيسية
  • Convert PFB to web formats
  • Batch conversion capabilities
  • Font subset options for optimization
  • CSS generation for web use
  • User-friendly interface
نقاط القوة
  • Accessible from any device with a browser
  • Simple and straightforward conversion process
  • No installation required
القيود
  • Limited editing capabilities
  • Dependent on internet connection

يصدّر إلى: WOFF, WOFF2, TTF, EOT

الأفضل لـ: Transfonter is ideal for web developers needing quick PFB conversions without software installation.

زيارة Transfonter →

Convert PFB Files Free

Use our free online font converter to convert PFB and other formats - no signup, no watermarks.

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References

  1. PostScript fonts - Wikipedia
  2. PostScript Type 1 fonts end of support - Adobe Help
  3. Type 1 - PostScript Type 1 fonts - File Format Docs