PT Serif
PT Serif is a serif font in 2 weights with italics. Its lowercase letters are 3% narrower than the typical serif font. Last updated 5 September 2025.
Editing a PDF that uses PT Serif
Most PDFs embed only the letters they already use. Type a new letter and many editors either refuse or swap in a different font. MythosPDF recognises PT Serif from the widths stored in your PDF, loads the complete open font, and sets your new text in PT Serif itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 502.6 units per 1000 em |
|---|---|
| Average capital letter width | 644.7 units per 1000 em |
| Word space | 243 units per 1000 em |
| Digits | tabular (every digit is 533 units wide, so columns of numbers line up) |
| Spacing | proportional |
| Width of i compared with m | 35% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Serif |
Weights and styles
Languages beyond basic Latin
Open fonts closest to PT Serif
Measured on every printable character both fonts contain. A smaller difference means the same words take the same space, so lines break in the same places.
- Averia Gruesa Libre Regularsimilar widths (25.5 units)
- Averia Libre Regularsimilar widths (25.9 units)
- Song Myung Regularsimilar widths (26.9 units)
- Source Serif Pro Regularsimilar widths (27.1 units)
- Cactus Classical Serif Regularsimilar widths (28.7 units)
- Averia Serif Libre Regularsimilar widths (29.4 units)
- Vollkorn Regularsimilar widths (29.7 units)
- Frank Ruhl Libre Regularloosely similar widths (30.1 units)
Compare PT Serif
Questions people ask
+Can I edit a PDF that uses PT Serif?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in PT Serif itself, loaded from the open font, so the edit matches the rest of the page.
+Is PT Serif free to use?
PT Serif is released under the SIL Open Font License 1.1, an open licence that allows free use in documents, including commercial ones. Check the licence text for your exact use.
+Which font is closest to PT Serif?
By measured letter widths, Averia Gruesa Libre is the closest match among open fonts (a mean difference of 25.5 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does PT Serif support?
It includes these character sets: Cyrillic, Cyrillic Extended, Latin, Central European.
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