Roboto Slab
Roboto Slab is a serif font in 9 weights, also available as a variable font. Its lowercase letters are 5% wider than the typical serif font. Last updated 8 September 2025.
Editing a PDF that uses Roboto Slab
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 Roboto Slab from the widths stored in your PDF, loads the complete open font, and sets your new text in Roboto Slab itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 545 units per 1000 em |
|---|---|
| Average capital letter width | 685.3 units per 1000 em |
| Word space | 248.5 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 | Serif |
Weights and styles
Languages beyond basic Latin
Open fonts closest to Roboto Slab
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.
- Battambang Regularnearly identical widths (1 units)
- Suwannaphum Regularnearly identical widths (1 units)
- Hanuman Regularnearly identical widths (1.7 units)
- Averia Serif Libre Regularloosely similar widths (33.6 units)
- Podkova Regularloosely similar widths (37.9 units)
- Sura Regularloosely similar widths (38 units)
- Domine Regularloosely similar widths (38.3 units)
- Bitter Regularloosely similar widths (38.5 units)
Compare Roboto Slab
Questions people ask
+Can I edit a PDF that uses Roboto Slab?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Roboto Slab itself, loaded from the open font, so the edit matches the rest of the page.
+Is Roboto Slab free to use?
Roboto Slab is released under the Apache License 2.0, 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 Roboto Slab?
By measured letter widths, Battambang is the closest match among open fonts (a mean difference of 1 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Roboto Slab support?
It includes these character sets: Cyrillic, Cyrillic Extended, Greek, Greek Extended, Latin, Central European, Vietnamese.
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