PFB to SIX conversion is the process of transforming a PFB (Printer Font Binary) file — a binary font format commonly used to store Type 1 font programs in a compact form — into a SIX file, which is a less common or specialized font/container format used by certain layout or typesetting systems. This conversion repacks font data into the SIX structure so the font can be recognized and used by tools that require the SIX format while preserving glyph outlines and encoding where possible.
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Read guide →Drag your .PFB file from your computer or use the browse function.
Confirm .six as the selected destination format.
Click "Convert" and download your converted .SIX file once ready.
The PFB file format uses the MIME type application/x-font-type1 and is commonly associated with Type 1 PostScript fonts. SIX files often use specialized MIME types depending on the context, supporting enhanced compression codecs for efficient storage. Both formats are widely used in font management and digital typography workflows.
The SIX (.SIX) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like PFB.
While specific technical details aren't available here, SIX files generally serve the purpose of storing image effectively within their domain.
Our Online PFB to SIX Converter provides a seamless and efficient way to convert your PFB files into the SIX format. Designed for users who need quick and reliable conversions, this tool supports high-quality output and preserves file integrity throughout the process.
PFB files are primarily used for storing raw font data, while SIX files are optimized container formats supporting additional metadata and compression. SIX format generally provides better performance and smaller file sizes compared to PFB. Choosing SIX over PFB results in more flexible usage across different software environments.
Keep individual PFB files under 50–100 MB for smooth browser-based or lightweight converter performance; very large fonts with thousands of glyphs may be slower to process.
To preserve rendering fidelity, choose lossless SIX export and include full font metrics and kerning tables; avoid subsetting when you need complete character coverage.
For batch conversions, group files by encoding and metadata similarity to reduce manual fixes; use a desktop or server tool for large batches to avoid web upload limits.
Be aware that some proprietary hinting or hint instructions in PFB may not map perfectly to SIX, which can affect rasterized appearance at small sizes.
This PFB to SIX converter saved me hours of manual work.
James L.
Graphic Designer
Reliable and fast conversion with perfect output quality.
Anna M.
Web Developer
Easy to use and handles complex files without errors.
David K.
Font Specialist
Start your free PFB to SIX conversion now.
Drag your file here to to upload.
Up to 250MB
If your PFB uses custom encodings or nonstandard glyph names, verify glyph mapping after conversion and keep a backup of the original PFB for fallback.