Tell it about your page
Aim for under 60 characters. Google clips the rest.
Aim for 140–160 characters. This becomes the snippet text under the title.
The one address this page should be known by, https included.
Social cards
Open Graph is what Facebook, LinkedIn and Discord read. Twitter cards are the X.com twins of them.
Search engine doors (robots)
"Robots" tags tell search engines what they may do with the page. If everything is unlocked you usually skip the tag entirely.
Nothing to explain yet — the defaults mean "robots may index and follow," and the tag is left out.
Head extras
Live previews
Google search result
Open Graph card (Facebook · LinkedIn · Discord)
Twitter / X card
Gentle nudges
Copy-paste <head> tags
Paste inside your page's <head>, after the charset and viewport lines. Drop files or copy buttons wherever your template puts them.
Copy-paste robots.txt
Save it as robots.txt in the top folder of your site so it lives at https://yourdomain.com/robots.txt.
Icon forge (favicons in every size)
Drop in a square-ish logo and this carves out every size a real site needs — 16 and 32 pixel browser tabs, an 180 pixel phone icon, 192 and 512 for installable apps — plus a bundled favicon.ico. No image? It can mint a simple letter badge instead.