Subset Fonts Advanced
Subset embedded fonts to reduce PDF file size. Pro plan required.
How to Subset Fonts
Upload your PDF
Fonts are analyzed for unused glyphs
Click 'Subset Fonts'
Download the optimized PDF
Common questions
Frequently Asked Questions
What is font subsetting?
Subsetting keeps only the characters used in the document, removing unused glyphs to save space.
How much space does subsetting save?
A typical font has 65,000+ glyphs. If your document uses only 200 characters, subsetting removes 99% of font data.
Will the document look different after subsetting?
No. All visible text renders identically. Only unused character data is removed from the embedded font files.
Can I add text to a subsetted PDF later?
You can add text, but only characters present in the subset will render correctly. For full font availability, use the original un-subsetted version.
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