What is PFA?

PostScript Type 1 ASCII (PFA) is a human-readable printer font format used in professional typesetting and PostScript printing.

What is PFM?

Printer Font Metrics (PFM) is the binary companion to PFB fonts for Windows, containing font metric data for printing.

When Should You Use PFA vs PFM?

PFA vs PFM: Key Differences

• •The core technical difference: PFA relies on lossless compression whereas PFM uses lossless compression.
• •Neither format changes compression philosophy — both are lossless compression — so any size differences are due to encoding efficiency, not a shift in quality approach.
• •Transparency: N/A
• •File sizes: PFA files typically range 20-100KB per font and PFM files Very small, binary format.
• •Use case fit: PFA targets professional printing, postscript devices and PFM targets windows postscript printing, font pairing — your choice depends on which workflow stage you are serving.

Advantages of PFA

• ✓PFA applies lossless compression specifically calibrated for Professional printing, PostScript devices.
• ✓PFA enjoys broad native support across operating systems, browsers, and creative tools alike.
• ✓PFA guarantees every bit of the original data survives — no approximations, no shortcuts.
• ✓You will find PFA support built into virtually every tool that handles Professional printing, PostScript devices — no plugins or converters needed.

Advantages of PFM

• ✓PFM compresses data using lossless methods, keeping file sizes manageable for Windows PostScript printing, font pairing.
• ✓Industry-wide support means PFM files open anywhere — from legacy systems to the latest devices.
• ✓Lossless quality makes PFM the gold standard for archival and master copies.
• ✓From professional software to open-source alternatives, PFM works out of the box.

Common Use Cases for PFA to PFM Conversion

• Logo design
• Data visualization
• Presentation design
• Video subtitles
• Game UI typography
• Website typography

Industry Applications

Best Practices for PFA to PFM Conversion

• →Converting PFA to PFM: check that glyph coverage is preserved — some formats have character limitations
• →Use PFM for websites where file size matters
• →Test fonts across different browsers and operating systems after conversion
• →Always keep a backup of your original files before converting
• →Choose the appropriate quality settings for your specific use case

Troubleshooting PFA to PFM Conversion

• !The converted PFM font has incorrect metrics → advance width and kerning values may differ between formats despite identical glyphs
• !PFM file looks heavier or lighter than PFA → font rendering engines handle weight and anti-aliasing differently per format
• !OpenType features (ligatures, swashes) lost after conversion to PFM → verify the target format supports advanced typographic features
• !Variable font axes missing from the converted PFM → variable font support varies significantly between formats

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