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Supported Formats
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Desktop Fonts
TrueType Font - universal desktop font format developed by Apple and Microsoft in the 1980s. Uses quadratic Bézier curves for glyph outlines. Excellent screen rendering with hinting technology. Works on all platforms (Windows, Mac, Linux). Supports Unicode with up to 65,536 glyphs. Standard desktop font format with maximum compatibility. Perfect for document embedding, desktop publishing, and cross-platform typography. Universal support in all operating systems and applications. Reliable choice for general-purpose font usage.
OpenType Font - modern font format jointly developed by Adobe and Microsoft (1996) extending TrueType. Uses cubic Bézier curves (PostScript outlines) allowing more complex glyph shapes. Supports advanced typography features (ligatures, alternate glyphs, contextual substitutions). Can contain up to 65,536 glyphs enabling comprehensive language support. Cross-platform compatibility (Windows, Mac, Linux). Industry standard for professional typography and multilingual documents. Perfect for print design, branding, and high-quality typography. Superior to TTF for complex scripts and advanced typographic features.
Mac Data Fork Font - legacy Macintosh font format storing TrueType/PostScript data in data fork. Used in Mac OS 9 and earlier. Phased out with Mac OS X transition to .ttf and .otf. Contains complete font data in single file (unlike resource fork fonts). Limited compatibility with modern systems. Convert to TTF or OTF for current macOS and cross-platform use. Historical format important for accessing old Mac fonts. Mainly encountered when migrating legacy Mac systems.
Compact Font Format - Adobe's space-efficient font outline format used within OpenType fonts. Stores glyph outlines using PostScript-based charstrings. More compact than TrueType outlines. Used in OTF fonts with PostScript outlines. Not standalone font file - embedded in OTF. Professional typography standard. Better compression than TTF outlines. Extract from OTF or work with complete OTF fonts.
CID-Keyed Font - Adobe font format for large character sets (Asian languages with thousands of characters). Character ID based system for efficient large font handling. Used in professional CJK (Chinese, Japanese, Korean) typography. Complex format requiring PostScript RIP support. Legacy format superseded by Unicode OpenType. Convert to modern OTF with Unicode mapping for compatibility. Important for accessing legacy Asian language fonts.
Spline Font Database - FontForge's native font format. Editable font source format storing complete font data including editing information. ASCII or binary format with full font metadata. Used in font design and development. Convert to TTF/OTF for deployable fonts. Perfect for font design workflow. Maintains complete font development history. FontForge is free open-source font editor.
Unified Font Object - open source font source format (XML-based directory structure). Developed by font tool creators for interoperability. Stores complete font design data in human-readable XML. Used by modern font editors (RoboFont, Glyphs, FontForge). Perfect for font development and version control. Industry standard for open font source files. Compile to TTF/OTF for distribution. Excellent for collaborative font design.
Web Formats
Web Open Font Format - font format specifically designed for web use (2009). Compressed TrueType/OpenType fonts reducing file size by ~40%. Supported by 99% of browsers (Chrome, Firefox, Safari, Edge). Includes metadata for licensing and font information. Perfect for website typography ensuring consistent rendering across devices. Industry standard for web fonts. Faster page loads than raw TTF/OTF. Essential for modern web design and custom typography. Recommended for broad web compatibility.
WOFF 2.0 - improved web font format (2014) with better compression using Brotli algorithm. 30% smaller than WOFF with faster decompression. Supported by all modern browsers (96%+ global coverage). Maintains WOFF's metadata and licensing features. Superior performance for web typography. Recommended format for modern websites. Falls back to WOFF for older browsers. Essential for optimizing website performance and reducing bandwidth. Default choice for contemporary web development.
Embedded OpenType - proprietary web font format developed by Microsoft for Internet Explorer. Compressed and subset fonts with DRM protection. Only supported by Internet Explorer (legacy browser). Obsolete format replaced by WOFF/WOFF2. Historically important for web fonts (1997-2010s). Still encountered in legacy websites. Not recommended for new projects. Convert to WOFF2/WOFF for modern browsers. Maintained only for backward compatibility with old IE versions.
SVG Font - vector-based font format embedded in SVG files. Defines glyphs as SVG paths allowing colors, gradients, and effects. Deprecated for web use in favor of WOFF. Limited browser support (only Safari supports SVG fonts). Larger file sizes than outline fonts. Mainly historical format. Useful for special effects and colored fonts. Modern alternative: OpenType-SVG. Not recommended for general use. Better options: WOFF2 with icon fonts or OpenType color fonts.
Specialized Formats
PostScript Font Binary - Adobe Type 1 binary format for professional printing (1984). Contains glyph outlines in PostScript language. Excellent print quality with precise curves. Requires corresponding PFM or AFM metrics file. Standard in professional publishing and printing industry. Limited to 256 glyphs (single-byte encoding). Being replaced by OpenType. Still used in legacy publishing workflows. Convert to OTF for modern compatibility while preserving PostScript quality.
PostScript Font ASCII - Adobe Type 1 ASCII variant of PFB format. Human-readable PostScript code defining font outlines. Used for font development and debugging. Less efficient than PFB binary format. Requires PFM or AFM metrics file. Same quality as PFB for printing. Legacy format for professional typography. Convert to OTF for modern systems. Primarily historical significance in desktop publishing evolution.
Printer Font Metrics - Windows metrics file for Type 1 PostScript fonts. Contains font measurements (character widths, kerning pairs, bounding boxes). Required companion to PFB/PFA for proper rendering on Windows. Text file format with font metrics data. Does not contain glyph outlines. Legacy format from Windows 3.1/95 era. Used with PFB for complete Type 1 font installation. Modern OpenType fonts include metrics internally. Convert Type 1 fonts to OTF to consolidate metrics and outlines.
Adobe Font Metrics - Adobe's metrics format for Type 1 PostScript fonts. Contains character widths, kerning pairs, ligatures, and bounding boxes. ASCII text format readable by humans and applications. Companion to PFB/PFA outline files. Used by font design tools and professional publishing software. Essential for proper font spacing and kerning. Legacy format with historical importance in digital typography. Modern fonts embed metrics in OTF format. Convert to OpenType for integrated metrics and outlines.
Binary Font File - generic binary font data format used by various font tools and editors. Contains raw font outline data without specific format wrapper. Used in font development and conversion pipelines. Requires specific tools to process. Not a standard end-user format. Intermediate format in font creation workflow. Convert to TTF or OTF for usable fonts. Primarily relevant in font design and development contexts.
Mac Suitcase Font - legacy Macintosh font container (Mac OS Classic) storing multiple fonts in one file. Contains TrueType or PostScript fonts in resource fork. Used with Font Suitcase format (.suit extension). Obsolete with Mac OS X migration. Poor compatibility with modern systems. Required Font/DA Mover for installation on old Macs. Extract individual fonts and convert to TTF/OTF for modern use. Important for recovering fonts from classic Mac archives and systems.
PostScript Font Program - Adobe PostScript Type 1 font in PostScript language format. Contains font outlines as PostScript code. Used for printer font downloads and font development. Human-readable but inefficient. Legacy format from desktop publishing era. Convert to OTF for modern usage. Historical importance in professional typography. Mainly encountered in old publishing workflows.
PageMaker 3 Font - legacy font format from Aldus PageMaker 3.0 (1980s desktop publishing). Proprietary format specific to early PageMaker versions. Obsolete format with no modern support. Important only for recovering old PageMaker documents. Convert to TTF/OTF if font data recoverable. Historical artifact from desktop publishing evolution. Better alternatives available for all uses.
Type 11 Font - variant of PostScript CID-Keyed font format. Used for complex fonts with large character sets. Legacy format for Asian language fonts. Limited modern support. Convert to Unicode OpenType for compatibility. Historical format in CJK font development. Modern alternatives handle large character sets better with Unicode.
Type 42 Font - PostScript font format wrapping TrueType outlines. Hybrid format combining PostScript wrapper with TrueType data. Used for downloading TrueType fonts to PostScript printers. Primarily printer-internal format. Limited end-user relevance. Convert underlying TrueType to TTF/OTF. Historical bridge between TrueType and PostScript worlds.
How to Convert Files
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Frequently Asked Questions
What is a TTF file and why is it widely used?
A TTF file (TrueType Font) is a vector-based font format originally created by Apple and later adopted by Microsoft, becoming a universal standard for digital typography.
Its Bézier-curve outlines allow high-quality rendering at any size, making it suitable for both print and screen.
Because nearly all operating systems support it natively, TTF remains one of the most compatible and long-standing font formats.
Why are TTF fonts compatible across all major platforms?
Apple, Microsoft, and Linux distributions all integrated native TrueType support early in their font engines.
Rendering libraries like DirectWrite, CoreText, and FreeType can process TTF files without external plugins.
This cross-ecosystem support ensures TTF works on almost every device, including mobile platforms.
Why do TTF fonts scale without losing quality?
TTF glyphs are defined by mathematical vector outlines rather than fixed pixels.
This allows smooth resizing from tiny UI text to large-format print without distortion.
The format is optimized for resolution-independent rendering, making it future-proof for high-DPI screens.
Why do some TTF files include hinting information?
TrueType supports hinting instructions that adjust glyph shapes at small sizes for better readability.
Hinting compensates for low-resolution displays by optimizing character sharpness.
This gives TTF an advantage over some lighter formats that lack robust hinting systems.
Why do designers still prefer TTF despite newer formats?
Its long-standing compatibility ensures that TTF behaves predictably in legacy and modern workflows.
Most design software, printers, and web tools fully support TTF with no conversion needed.
Its stable rendering and wide adoption make TTF a dependable choice for everyday typography.
Why are TTF files larger than WOFF or WOFF2 fonts?
TTF stores uncompressed glyph data, making the file heavier than web-optimized formats.
Web fonts like WOFF2 use advanced compression to reduce bandwidth usage.
For desktop use, TTF’s larger size is usually not a drawback, but for web deployment, compression is preferred.
Why do some TTF fonts render differently across operating systems?
Each OS uses its own font rendering engine with unique antialiasing techniques.
Windows focuses on sharpness, macOS prioritizes shape preservation, and Linux varies by distribution.
These differences can subtly change the appearance of the same TTF font.
Why do TTF fonts sometimes cause licensing issues?
Many TTF fonts include embedding and usage restrictions defined by the font creator.
Not all TTFs are licensed for commercial use, redistribution, or embedding in software.
Understanding the license is essential before using a TTF font in commercial products.
Why do some TTF fonts not support all Unicode characters?
Older or limited-scope TrueType fonts only include specific language sets or glyph ranges.
Full Unicode coverage requires additional design work, which many creators do not include.
Modern TTFs may offer extensive character support, but legacy ones often remain restricted.
Why can corrupted TTF files cause rendering issues?
TTF is a structured binary format, so damage to its tables can break glyph mapping or rendering instructions.
Corruption may occur due to incomplete downloads, disk errors, or faulty file conversions.
Modern tools can sometimes repair TTF tables, but severe corruption is often irreversible.
Why are TTF fonts easy to install on most systems?
Operating systems recognize TTF as a native format and integrate it directly into the system font directory.
Users typically install TTF fonts with a simple click or drag-and-drop action.
This simplicity contributed to the format’s widespread adoption.
Why do web developers convert TTF to WOFF/WOFF2?
TTF files are larger and not optimized for web delivery.
WOFF and WOFF2 reduce file size significantly, improving page load speeds.
Browsers still accept TTF, but optimized formats provide better performance and compatibility.
Why did TTF become the foundation for modern digital typography?
It solved the need for scalable, high-quality fonts at a time when screens were transitioning from bitmap to vector rendering.
Its open adoption by major tech companies standardized font usage across platforms.
This consistency positioned TTF as the backbone of early digital typography.
Why do TTF fonts sometimes include embedded metadata?
Metadata fields store designer information, creation dates, licensing data, and style attributes.
Applications use this metadata to display accurate font names and organize style families.
While optional, metadata helps maintain consistency across software environments.
Should creators still publish fonts in TTF format today?
Yes—TTF remains widely supported in desktop environments and professional software.
Even when offering web-optimized formats, creators often include TTF for maximum compatibility.
Publishing in TTF ensures the font works for designers, developers, and end-users without extra conversion.