What changed, and what it breaks.
Plenty of people will tell you today’s Reel size. Almost nobody will tell you it changed on Tuesday, what it was before, or which of the posts you already put out are now wrong. That’s this page.
Nothing has moved since we started tracking
106 facts, checked every week, and every one still matches what we last recorded. The week one moves, it shows up here with the value it replaced. See every fact and the date it was checked →
An email the week a spec you rely on moves
Pick the platforms you actually post on. You’ll hear from us when one of their specs changes, and not otherwise. No round-up, no newsletter, nothing to unsubscribe from twice. Free, and no account needed.
There’s an RSS feed too, if you’d rather it landed in a reader.
A changelog is a harder promise than a date stamp
Anyone can put “updated September 2026” at the top of a page. It costs nothing and proves nothing. The date can change without the content changing, and you’d never know. A changelog can’t be faked like that, because it has to show the value it replaced. If nothing moved, this page says so.
Every spec in every lesson is pulled from these facts, not typed into the text. So when one changes, the lessons citing it change at the same moment, and the count above is the real number of pages that moved, not a guess.
