Typography in Documents

The Font Fallback Problem

If you use 'Helvetica' in a DOCX file, and send it to a Windows user who doesn't have Helvetica installed, Word will substitute it—often with Arial. This changes the physical width of characters, causing lines to wrap differently, pushing paragraphs to new pages, and destroying carefully crafted layouts.

PDF solves this via Font Subsetting. When you export to PDF, the engine rips the exact glyphs you used from the font file and embeds them directly into the PDF binary stream.

Common Mistakes

• Using custom branded fonts without embedding them in the final deliverable.
• Not realizing that heavily licensed fonts may actively prohibit embedding via DRM flags.

Next Steps

Put this theory into practice. Use our client-side tools to inspect documents directly in your browser.

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