What is PFM?

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

What is WOFF2?

WOFF2 (Web Open Font Format 2) is the next-generation webfont format with significantly better compression than WOFF, reducing font download sizes by 30-50%.

When Should You Use PFM vs WOFF2?

PFM vs WOFF2: Key Differences

• •PFM and WOFF2 diverge on compression: lossless compression for the source, lossy compression for the target.
• •The switch from lossless compression to lossy compression means you gain significant space savings while accepting minor quality trade-offs.
• •Transparency: N/A — converting from PFM will merge transparency into a solid background
• •File sizes: PFM files typically range Very small, binary format and WOFF2 files 50% smaller than WOFF, 70% smaller than TTF.
• •PFM is optimized for windows postscript printing, font pairing while WOFF2 is designed for modern web fonts, optimized performance — choose based on your specific workflow needs

Advantages of PFM

• ✓At its core, PFM relies on lossless encoding — a design choice that makes it perfect for Windows PostScript printing, font pairing.
• ✓You won't run into compatibility issues with PFM — it's a universal standard across platforms.
• ✓File size management with PFM: larger files guaranteed to match the original exactly.
• ✓Every major application in the Windows PostScript printing, font pairing space supports PFM natively.

Advantages of WOFF2

• ✓WOFF2 applies lossy compression specifically calibrated for Modern web fonts, optimized performance.
• ✓WOFF2 enjoys broad native support across operating systems, browsers, and creative tools alike.
• ✓WOFF2 delivers impressive compression ratios, shrinking files dramatically while keeping visual quality high.
• ✓You will find WOFF2 support built into virtually every tool that handles Modern web fonts, optimized performance — no plugins or converters needed.

Common Use Cases for PFM to WOFF2 Conversion

• Data visualization
• Presentation design
• Video subtitles
• Game UI typography
• Website typography
• Brand identity

Industry Applications

Best Practices for PFM to WOFF2 Conversion

• →Converting PFM to WOFF2: check that glyph coverage is preserved — some formats have character limitations
• →Use WOFF2 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 PFM to WOFF2 Conversion

• !WOFF2 font doesn't render correctly → check if WOFF2 supports all glyphs present in PFM
• !Licensing restrictions after PFM to WOFF2 conversion → verify the font license allows format conversion
• !Hinting data lost converting PFM to WOFF2 → some font formats like WOFF2 may not preserve TrueType hinting
• !Special characters missing from converted WOFF2 → font subsetting may have removed unused glyphs

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