If you are receiving this error when opening a PDF, the creator should re-save the PDF with fonts embedded.

You can lock your typography directly inside Microsoft Office files so they travel with the document.

Font substitution rarely happens because of a software glitch. It is almost always a logistical issue related to how files are shared. The most frequent causes include:

If you know which fonts are missing, you can take action immediately:

Why the creator’s choice of font is as vital as the words themselves. Option 3: Philosophy / Satire

Before sending a project to a colleague or printer, (File > Package). This creates a folder containing your .PSD / .AI file and a separate folder containing all linked assets and fonts used. Outline Fonts

Adjust the Font Mapping File to specify a clean, standard fallback style. How to Prevent Font Substitution Forever

Understanding the "Font Substitution Will Occur" Warning: Causes and Fixes