If you need the raw C header file (byte array) for microcontrollers, download the u8g2 library. The U8g2 project includes a meticulously tested 6x14h font.
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Here's a clean, safe, and commonly used source:
Never trust a random "font 6x14h library download" link from a file-sharing site. Always verify checksums, examine the glyph set, and test in a sandbox if possible.