Check your writing against nine plain-writing rules

Paste a paragraph. Each pattern my writing guide bans gets marked, with the rule it breaks. The check runs in your browser and sends nothing anywhere.

Marked up

Highlighted words break a rule. A wavy underline marks a whole sentence that does. Hover for the rule.

Findings

How far to trust it

The rules catch what they look for. Whether that makes writing better is a separate question, and the results test it against professional writers and readers. On fiction, the rules did no better than a coin toss at picking the version readers preferred.