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Source Sans Pro

Source Sans Pro is a sans serif font in 6 weights with italics. Its lowercase letters are 8% narrower than the typical sans serif font. Last updated 22 September 2022.

Source Sans Pro: The quick brown fox jumps over the lazy dog 0123456789
Source Sans Pro Regular
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Editing a PDF that uses Source Sans Pro

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 Source Sans Pro from the widths stored in your PDF, loads the complete open font, and sets your new text in Source Sans Pro itself. The rest of the page is carried over untouched.

Measured metrics

Average lowercase letter width474.8 units per 1000 em
Average capital letter width569.1 units per 1000 em
Word space200 units per 1000 em
Digitstabular (every digit is 497 units wide, so columns of numbers line up)
Spacingproportional
Width of i compared with m30%
Printable ASCII characters covered94 of 94
CategorySans serif

Weights and styles

Languages beyond basic Latin

Open fonts closest to Source Sans Pro

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.

  1. Mada Regularidentical letter widths (0 units)
  2. Source Sans 3 Regularidentical letter widths (0 units)
  3. Assistant Regularnearly identical widths (2.6 units)
  4. Varta Regularnearly identical widths (3 units)
  5. Tirra Regularvery close widths (12.8 units)
  6. Akatab Regularvery close widths (12.8 units)
  7. Chiron Hei HK Regularsimilar widths (22.6 units)
  8. Kedebideri Regularsimilar widths (23.3 units)

Compare Source Sans Pro

Questions people ask

+Can I edit a PDF that uses Source Sans Pro?

Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Source Sans Pro itself, loaded from the open font, so the edit matches the rest of the page.

+Is Source Sans Pro free to use?

Source Sans Pro 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 Source Sans Pro?

By measured letter widths, Mada 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 Source Sans Pro support?

It includes these character sets: Cyrillic, Cyrillic Extended, Greek, Greek Extended, Latin, Central European, Vietnamese.

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