body font-family: "TeX Gyre Heros", "Helvetica Neue", Helvetica, Arial, sans-serif;
| Font | License | Similarity Notes | |------|---------|------------------| | | SIL OFL (free) | More modern, higher x-height, excellent for UI. | | Arimo | Apache 2.0 | Based on Helvetica; slightly wider spacing. | | Nimbus Sans | GPL + font exception | Almost identical to Helvetica; part of Ghostscript. | | TeX Gyre Heros | GFL (free) | Based on Helvetica Neue; very close metric match. | | Work Sans | SIL OFL | Contemporary, slightly softer than Helvetica Neue. | helvetica neue 55 roman font free download
This gracefully falls back from a free clone to system Helvetica (if available) to standard fallbacks. body font-family: "TeX Gyre Heros"