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Source Serif Pro

Source Serif Pro is a serif font in 6 weights with italics. Its lowercase letters are about as wide as the typical serif font. Last updated 22 September 2022.

Source Serif Pro: The quick brown fox jumps over the lazy dog 0123456789
Source Serif Pro Regular
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Editing a PDF that uses Source Serif 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 Serif Pro from the widths stored in your PDF, loads the complete open font, and sets your new text in Source Serif Pro itself. The rest of the page is carried over untouched.

Measured metrics

Average lowercase letter width510.3 units per 1000 em
Average capital letter width649.9 units per 1000 em
Word space233 units per 1000 em
Digitstabular (every digit is 500 units wide, so columns of numbers line up)
Spacingproportional
Width of i compared with m33%
Printable ASCII characters covered94 of 94
CategorySerif

Weights and styles

Languages beyond basic Latin

Open fonts closest to Source Serif 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. Cactus Classical Serif Regularnearly identical widths (3.3 units)
  2. Song Myung Regularvery close widths (13.3 units)
  3. Source Serif 4 Regularsimilar widths (22.7 units)
  4. Frank Ruhl Libre Regularsimilar widths (25 units)
  5. DM Serif Text Regularsimilar widths (25.7 units)
  6. DM Serif Display Regularsimilar widths (26.6 units)
  7. Averia Serif Libre Regularsimilar widths (27 units)
  8. PT Serif Regularsimilar widths (27.4 units)

Compare Source Serif Pro

Questions people ask

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

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

+Is Source Serif Pro free to use?

Source Serif 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 Serif Pro?

By measured letter widths, Cactus Classical Serif is the closest match among open fonts (a mean difference of 3.3 units per 1000 em). Text set in one takes almost the same space in the other.

+Which languages does Source Serif Pro support?

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

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