Flow Block
Flow Block is a display font in 1 weight. Its lowercase letters are 4% narrower than the typical display font. Last updated 17 September 2025.
Editing a PDF that uses Flow Block
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 Flow Block from the widths stored in your PDF, loads the complete open font, and sets your new text in Flow Block itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 506 units per 1000 em |
|---|---|
| Average capital letter width | 517 units per 1000 em |
| Word space | 600 units per 1000 em |
| Digits | tabular (every digit is 572 units wide, so columns of numbers line up) |
| Spacing | proportional |
| Width of i compared with m | 50% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Display |
Weights and styles
Languages beyond basic Latin
Open fonts closest to Flow Block
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.
- Flow Rounded Regularidentical letter widths (0 units)
- Flow Circular Regularvery close widths (5.4 units)
- Honk Regularloosely similar widths (87.2 units)
- Roboto Condensed Regularloosely similar widths (90 units)
- Love Ya Like A Sister Regularloosely similar widths (90.7 units)
- Arya Regularloosely similar widths (91.4 units)
- Modak Regularloosely similar widths (92.3 units)
- Francois One Regularloosely similar widths (92.8 units)
Compare Flow Block
Questions people ask
+Can I edit a PDF that uses Flow Block?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Flow Block itself, loaded from the open font, so the edit matches the rest of the page.
+Is Flow Block free to use?
Flow Block 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 Flow Block?
By measured letter widths, Flow Rounded is the closest match among open fonts (a mean difference of 0 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Flow Block support?
It includes these character sets: Cyrillic, Cyrillic Extended, Latin, Central European, Vietnamese.
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