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Roboto vs Source Sans 3
Roboto and Source Sans 3 are both freely available sans-serif fonts often used as alternatives to the same premium typefaces. Roboto serves as a replacement for 20 premium fonts while Source Sans 3 covers 22. This comparison helps you pick between two strong open-source options.
Design DNA
Design overlap:67%
Roboto
Source Sans 3
Highlighted traits are shared between both fonts
Visual Comparison
Roboto
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 | Roboto | 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 | Apache-2.0 | OFL-1.1 |
| Language Support | latin, latin-extended, cyrillic, cyrillic-extended, greek, greek-extended, vietnamese | latin, latin-extended, cyrillic, cyrillic-extended, greek, greek-extended, vietnamese |
| Source | Google Fonts | Google Fonts |
Best Use Cases
Typography for established businesses, enterprise software, and professional ser...
Typography suited for magazines, newspapers, and long-form content. Editorial fo...
Typography optimized for user interfaces, design systems, and digital products. ...
Fonts that establish strong brand identity with distinctive character and versat...
Typography for wayfinding, environmental graphics, and public signage. Signage f...
Typography for navigation systems, directional signage, and environmental graphi...
Typography for advertising, marketing campaigns, and promotional materials. Adve...
Typography for desktop and web applications, software interfaces, and digital to...
Typography for tech companies, software products, and digital innovation. Tech f...
Weight & Style Coverage
Performance Comparison
| Metric | Roboto | Source Sans 3 |
|---|---|---|
| Score | 59/100 | 59/100 |
| File Size | 551.9 KB | 380.1 KB |
| Weights | 9 (var) | 9 (var) |
| Italics | Yes | Yes |
| Variable Font | Yes (2 axes) | Yes (1 axes) |
| Language Groups | 7 | 7 |
| CDN Delivery | Yes | Yes |
| x-Height Ratio | 0.528 | 0.486 |
| Cap Height Ratio | 0.711 | 0.66 |
Source Sans 3 is 31% lighter for the standard weight set (400, 400i, 700).
Which Should You Choose?
Recommended: Roboto
- Replaces 20 premium fonts
- clean, professional character
- Popular in healthcare-medical and enterprise-corporate
- Variable font with continuous weight range
- Free under Apache-2.0
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
- Free under OFL-1.1
Premium Font Coverage
Both replace (2)
Only Roboto (18)
Only Source Sans 3 (20)
Roboto covers 20 premium fonts vs Source Sans 3's 22