Datatype
Datatype is a monospace font in 9 weights, also available as a variable font. Its lowercase letters are 17% narrower than the typical monospace font. Last updated 11 March 2026.
Editing a PDF that uses Datatype
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 Datatype from the widths stored in your PDF, loads the complete open font, and sets your new text in Datatype itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 500 units per 1000 em |
|---|---|
| Average capital letter width | 500 units per 1000 em |
| Word space | 250 units per 1000 em |
| Digits | tabular (every digit is 500 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 Datatype
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.
- Iosevka Curly Slab Regularnearly identical widths (2.6 units)
- Iosevka Regularnearly identical widths (2.6 units)
- Iosevka Charon Mono Regularnearly identical widths (2.6 units)
- Inconsolata Regularnearly identical widths (2.6 units)
- Xanh Mono Regularnearly identical widths (2.6 units)
- Iosevka Curly Regularnearly identical widths (2.6 units)
- Workbench Regularnearly identical widths (2.6 units)
- Nanum Gothic Coding Regularnearly identical widths (2.6 units)
Compare Datatype
Questions people ask
+Can I edit a PDF that uses Datatype?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Datatype itself, loaded from the open font, so the edit matches the rest of the page.
+Is Datatype free to use?
Datatype 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 Datatype?
By measured letter widths, Iosevka Curly Slab is the closest match among open fonts (a mean difference of 2.6 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Datatype support?
It includes these character sets: Latin, Central European.
Ready to fix your PDF?
Free, in your browser, and it takes about a minute. No account needed.