Though this seems like it would have a quick, simple answer, the truth is a bit more complex. There are no industry-standard guidelines for large-print or giant-print Bibles.
When the Tyndale team creates a large-print or giant-print Bible, we look at several things, including industry norms for various line sizes, page layouts for the specific Bible, the expected page count (and therefore weight) of the physical Bible, the type of paper being printed on, how much the text shows through, and—above all else—readability.
Font size alone is not a good judge for whether or not a Bible is readable. There are at least two other factors that make a huge difference in readability. The first is the choice of which font is used. (For instance, the font we have developed, Lucerna, looks as big at 12 or 14 points as many fonts do at 13 or 15 points.) The second factor is the leading—the spacing between lines. If the leading is too small, then readability will be markedly affected.
The best way to know if a large-print or giant-print Bible is the best size for you is simply to look at the pages themselves. However, this is becoming more and more difficult in our digital age. To help with this, we are currently working on creating digital samplers and offering photos on our websites to help you see what our Bibles look like on the inside.
