Mozilla Text
Mozilla Text is a sans serif font in 6 weights, also available as a variable font. Its lowercase letters are 8% wider than the typical sans serif font. Last updated 30 July 2025.
Editing a PDF that uses Mozilla Text
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 Mozilla Text from the widths stored in your PDF, loads the complete open font, and sets your new text in Mozilla Text itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 559.7 units per 1000 em |
|---|---|
| Average capital letter width | 666.5 units per 1000 em |
| Word space | 245 units per 1000 em |
| Digits | proportional (digit widths differ) |
| Spacing | proportional |
| Width of i compared with m | 33% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Sans serif |
Weights and styles
Languages beyond basic Latin
Open fonts closest to Mozilla Text
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.
- Miranda Sans Regularsimilar widths (24.8 units)
- Geist Regularsimilar widths (25.7 units)
- Mozilla Headline Regularsimilar widths (25.8 units)
- Geist Sans Regularsimilar widths (28.2 units)
- Rubik Regularsimilar widths (28.4 units)
- Golos Text Regularsimilar widths (29.1 units)
- Russo One Regularsimilar widths (29.4 units)
- Bai Jamjuree Regularsimilar widths (29.8 units)
Compare Mozilla Text
Questions people ask
+Can I edit a PDF that uses Mozilla Text?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Mozilla Text itself, loaded from the open font, so the edit matches the rest of the page.
+Is Mozilla Text free to use?
Mozilla Text 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 Mozilla Text?
By measured letter widths, Miranda Sans is the closest match among open fonts (a mean difference of 24.8 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Mozilla Text 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.