Mark the owned language
Highlight specific nouns, proof, decisions, and repeated phrasing.
Branding guide · Voice under compression
A summary will remove examples, rhythm, and most of the page. The test is whether the remaining nouns, judgments, proof, and limits still sound like one specific company instead of the category average.
language · judgment · proof · residue

Use the same source copy at four lengths. The voice should get shorter without becoming generic.
Highlight specific nouns, proof, decisions, and repeated phrasing.
Check whether the position and proof still belong to the same brand.
Keep the buyer problem, the useful difference, and one reason to believe.
Ask whether a competitor could use the sentence without changing a word.
Most compression failures begin in the source copy, not in the summary.
If a name, color, mark, message, voice, or page is starting to affect sales or trust, get the public-facing decision checked before rollout makes it harder to change.