Petrona
Petrona is a serif font in 9 weights with italics, also available as a variable font. Its lowercase letters are 5% narrower than the typical serif font. Last updated 30 June 2026.
Editing a PDF that uses Petrona
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 Petrona from the widths stored in your PDF, loads the complete open font, and sets your new text in Petrona itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 493 units per 1000 em |
|---|---|
| Average capital letter width | 643.5 units per 1000 em |
| Word space | 225 units per 1000 em |
| Digits | proportional (digit widths differ) |
| Spacing | proportional |
| Width of i compared with m | 35% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Serif |
Weights and styles
- Petrona Thin Italic
- Petrona Thin
- Petrona ExtraLight Italic
- Petrona ExtraLight
- Petrona Light Italic
- Petrona Light
- Petrona Italic
- Petrona Regular
- Petrona Medium Italic
- Petrona Medium
- Petrona SemiBold Italic
- Petrona SemiBold
- Petrona Bold Italic
- Petrona Bold
- Petrona ExtraBold Italic
- Petrona ExtraBold
- Petrona Black Italic
- Petrona Black
Languages beyond basic Latin
Open fonts closest to Petrona
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.
- Pitagon Serif Regularidentical letter widths (0 units)
- Vidaloka Regularsimilar widths (29.2 units)
- Enriqueta Regularsimilar widths (29.6 units)
- Alike Angular Regularloosely similar widths (32 units)
- Alike Regularloosely similar widths (32 units)
- Shanti Regularloosely similar widths (32.1 units)
- Cambo Regularloosely similar widths (32.2 units)
- Sura Regularloosely similar widths (32.5 units)
Compare Petrona
Questions people ask
+Can I edit a PDF that uses Petrona?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Petrona itself, loaded from the open font, so the edit matches the rest of the page.
+Is Petrona free to use?
Petrona 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 Petrona?
By measured letter widths, Pitagon Serif is the closest match among open fonts (a mean difference of 0 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Petrona support?
It includes these character sets: Latin, Central European, Vietnamese.
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