Source Serif 4
Source Serif 4 shares Teodor's foundational letterform geometry, matching its x-height ratio and stroke weight distribution across all weights.
Source Serif 4 specimen — rendered live
Bold — 700
Source Serif 4 captures the geometric precision that defines Teodor
Regular — 400
As a free structural alternative to Teodor, Source Serif 4 delivers comparable proportions and visual weight for headings, body text, and interface elements. Evaluate its x-height, stroke contrast, and terminal treatment at your target sizes to confirm compatibility with your layout.
Uppercase
ABCDEFGHIJKLM
Lowercase + Figures
abcdefghijklm 0123456789
Strengths
- Strong text color for extended reading at body sizes
- Open-source license permits unlimited commercial use
- Multiple weights enable flexible typographic systems
Limitations
- Some weight extremes may be absent
- Serif detail refinement may differ at small sizes
- OpenType feature set may be less comprehensive
Best Use Cases for Source Serif 4
- Luxury brand identity systems
- Book typography and long-form content
Source Serif 4 delivers a credible alternative to Teodor for teams seeking transitional stroke contrast and balanced proportions without licensing costs. Best deployed for luxury brand identity systems, with testing recommended at target sizes to confirm optical compatibility.