Istok Web
Istok Web is a sans serif font in 2 weights with italics. Its lowercase letters are 7% narrower than the typical sans serif font. Last updated 10 September 2025.
Editing a PDF that uses Istok Web
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 Istok Web from the widths stored in your PDF, loads the complete open font, and sets your new text in Istok Web itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 484.5 units per 1000 em |
|---|---|
| Average capital letter width | 648.3 units per 1000 em |
| Word space | 333 units per 1000 em |
| Digits | proportional (digit widths differ) |
| Spacing | proportional |
| Width of i compared with m | 27% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Sans serif |
Weights and styles
Languages beyond basic Latin
Open fonts closest to Istok Web
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.
- Averia Gruesa Libre Regularsimilar widths (29.9 units)
- Arimo Regularloosely similar widths (30.1 units)
- Averia Libre Regularloosely similar widths (30.4 units)
- Inter Tight Regularloosely similar widths (30.9 units)
- Philosopher Regularloosely similar widths (32.8 units)
- El Messiri Regularloosely similar widths (32.8 units)
- Averia Sans Libre Regularloosely similar widths (32.9 units)
- Zalando Sans Regularloosely similar widths (33.6 units)
Compare Istok Web
Questions people ask
+Can I edit a PDF that uses Istok Web?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Istok Web itself, loaded from the open font, so the edit matches the rest of the page.
+Is Istok Web free to use?
Istok Web 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 Istok Web?
By measured letter widths, Averia Gruesa Libre is the closest match among open fonts (a mean difference of 29.9 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Istok Web support?
It includes these character sets: Cyrillic, Cyrillic Extended, Latin, Central European.
Ready to fix your PDF?
Free, in your browser, and it takes about a minute. No account needed.