Flesch’s Typography Rules

Written in 1948, Rudolf Flesch’s book The Art of Readable Writing takes on some typography rules near the end. These could have been written this morning, and they apply to writing for the Web as much as they applied to writing 70 years ago.

1) Any type size under 10 point is hard to read.

2) Anything printed in an unfamiliar typeface is hard to read.

3) If there is no leading (by leading he means white space between lines), lines longer than 40 characters are hard to read. The rule of thumb is that “one-and-half alphabets” or 39 characters and wider require increased spacing between lines.

4) Headings printed in CAPITALS only are hard to read, especially if they are BOLD.

5) Try to arrange the page so to make reading and understanding easier. Use bullet items, indentation and shorter paragraphs.



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I cleaned up my tab for Sonny Boy's Help Me and made it into a short book. There's a Kindle version for 99 cents, and if you buy the paperback you get the Kindle free.

Playing "Help-Me" In the Style of Sonny Boy Williamson II: A step by step, note for note analysis of some of Sonny Boy's Signature Riffs

I also write Science Fiction, so you can sample some of my best stories. Also available in Kindle format.

Error Message Eyes: A Programmer's Guide to the Digital Soul


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I started reading Science Fiction in the 1950s. I started Writing SF in the 1960s. Then, I had a life. Now I am retired, raising chickens and keeping bees. I am still an avid reader and I have sold about 70 stories in the last 20 years.
I have been collecting information about writing Science Fiction for many years now. Social media has replaced the Blog and large dedicated websites, so the pages here are mostly static. I update them from time to time.


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