Fill in title, description, canonical URL, site name, page type, image, locale and Twitter card type — the complete head block (title, meta description, canonical, Open Graph, Twitter Card) updates live and copies in one click. Length gauges measure title and description against the common display window, URLs are shape-checked, and the preview card approximates a share using only what you typed — nothing is fetched.
Privacy ledger
Data acquired
None.
Libraries used
Lit 3 — bundled into the tool file itself.
Data stored
None.
Data transmitted
None.
Use it on your own page
Download the tool as a single self-contained HTML file: readable source with the Lit library included, zero network requests — it works opened straight from your disk, and you can customize everything.