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Nunito Sans vs Source Sans 3
Nunito Sans and Source Sans 3 are both freely available sans-serif fonts often used as alternatives to the same premium typefaces. Nunito Sans serves as a replacement for 11 premium fonts while Source Sans 3 covers 22. This comparison helps you pick between two strong open-source options.
Design DNA
Design overlap:67%
Nunito Sans
Source Sans 3
Highlighted traits are shared between both fonts
Visual Comparison
Nunito Sans
FreeAa Bb Cc 123
The quick brown fox jumps over the lazy dog
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789 !@#$%^&*()
Source Sans 3
FreeAa Bb Cc 123
The quick brown fox jumps over the lazy dog
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789 !@#$%^&*()
Feature Comparison
| Feature | Nunito Sans | Source Sans 3 |
|---|---|---|
| Type | Free | Free |
| Classification | sans-serif | sans-serif |
| Variable Font | Yes | Yes |
| Weights | Variable (100-900) | Variable (100-900) |
| Italics | Yes | Yes |
| License | OFL-1.1 | OFL-1.1 |
| Language Support | latin, latin-extended, cyrillic, cyrillic-extended, vietnamese | latin, latin-extended, cyrillic, cyrillic-extended, greek, greek-extended, vietnamese |
| Source | Google Fonts | Google Fonts |
Best Use Cases
Typography for tech companies, software products, and digital innovation. Tech f...
Fonts that establish strong brand identity with distinctive character and versat...
Typography optimized for user interfaces, design systems, and digital products. ...
Typography for desktop and web applications, software interfaces, and digital to...
Typography for established businesses, enterprise software, and professional ser...
Typography optimized for financial technology applications. These fonts convey t...
Typography for product packaging, labels, and consumer goods. Packaging fonts mu...
Typography suited for magazines, newspapers, and long-form content. Editorial fo...
Typography for advertising, marketing campaigns, and promotional materials. Adve...
Typography for slide decks, keynotes, and presentation materials. Presentation f...
Weight & Style Coverage
Performance Comparison
| Metric | Nunito Sans | Source Sans 3 |
|---|---|---|
| Score | 62/100 | 59/100 |
| File Size | 260.4 KB | 380.1 KB |
| Weights | 9 (var) | 9 (var) |
| Italics | Yes | Yes |
| Variable Font | Yes (2 axes) | Yes (1 axes) |
| Language Groups | 5 | 7 |
| CDN Delivery | Yes | Yes |
| x-Height Ratio | 0.486 | 0.486 |
| Cap Height Ratio | 0.705 | 0.66 |
Nunito Sans is 31% lighter for the standard weight set (400, 400i, 700).
Which Should You Choose?
Recommended: Nunito Sans
- Replaces 11 premium fonts
- clean, friendly character
- Popular in healthcare-medical and enterprise-corporate
- Variable font with continuous weight range
- Free under OFL-1.1
Consider: Source Sans 3
- Replaces 22 premium fonts
- professional, clean character
- Popular in enterprise-corporate and government-public-sector
- Variable font with continuous weight range
- Broader language and script support
Premium Font Coverage
Both replace (3)
Only Nunito Sans (8)
Only Source Sans 3 (19)
Nunito Sans covers 11 premium fonts vs Source Sans 3's 22