How to Add New Fonts to Google Slides in 60 Seconds [by Andrew Childress31 Oct 2018](PDF)
Large blocks of text set in blackletter and script fonts are difficult to read, especially at small sizes. A serif font works much better for the smaller bits of text on your certificate. Classic serif fonts such as Baskerville, Caslon, and Garamond keep your certificates looking traditional but readable. For a more modern-style certificate, consider some of the classic sans serif fonts such as Avant Garde, Futura, and Optima. Be bold and mix a blackletter title with sans-serif type for the rest of the text.
Size and capitalization matter with these fonts.
- Some blackletter fonts contain old-style letterforms, such as an “s” that looks like an “f” and an “A” that looks a bit like a “U”. If you don’t like the old-style look, see if the font you like includes alternate letterforms.
- Avoid ALL CAPS with blackletter and script fonts if you want the recipient to be able to read the certificate.
- If you need to use a size of 15 points or smaller, use a serif or sans serif font to ensure legibility.
- Don’t use more than three styles (e.g., blackletter title, calligraphy text, and a serif for small text) in a single certificate.
- Watch character and word spacing carefully, especially when setting title text on a curved path.