Sometype Mono
Sometype Mono is a monospace font in 4 weights with italics, also available as a variable font. Its lowercase letters are 3% narrower than the typical monospace font. Last updated 16 September 2025.
Editing a PDF that uses Sometype Mono
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 Sometype Mono from the widths stored in your PDF, loads the complete open font, and sets your new text in Sometype Mono itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 580 units per 1000 em |
|---|---|
| Average capital letter width | 580 units per 1000 em |
| Word space | 580 units per 1000 em |
| Digits | tabular (every digit is 580 units wide, so columns of numbers line up) |
| Spacing | monospaced |
| Width of i compared with m | 100% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Monospace |
Weights and styles
Languages beyond basic Latin
Open fonts closest to Sometype Mono
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.
- Cascadia Mono Regularvery close widths (5.9 units)
- Cascadia Code Regularvery close widths (5.9 units)
- Reddit Mono Regularsimilar widths (17.5 units)
- Nova Mono Regularsimilar widths (18.5 units)
- Mononoki Regularsimilar widths (18.5 units)
- Courier Prime Regularsimilar widths (19.6 units)
- IBM Plex Mono Regularsimilar widths (20 units)
- Google Sans Code Regularsimilar widths (20 units)
Compare Sometype Mono
Questions people ask
+Can I edit a PDF that uses Sometype Mono?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Sometype Mono itself, loaded from the open font, so the edit matches the rest of the page.
+Is Sometype Mono free to use?
Sometype Mono 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 Sometype Mono?
By measured letter widths, Cascadia Mono is the closest match among open fonts (a mean difference of 5.9 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Sometype Mono support?
It includes these character sets: Latin, Central European.
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