SEO & web
Previews, slugs, robots files and metadata.
Every tool here ends the same way: you copy something out and paste it into a site. That output is what holds this small group together rather than a subject. None of them looks at your site or crawls anything — they take what you type and produce a correctly formed file or tag, which you then have to put somewhere.
What you paste, and where it goes
Three go in the head of a page: the meta tag generator for title, description and Open Graph, the canonical tag for duplicate URLs, and the schema markup generator for JSON-LD. Three are files that live on the server: robots.txt, an XML sitemap, and htaccess redirect rules. The last of those is the one to be careful with, because a rule that is wrong is a redirect loop rather than a missing page, and a loop takes the whole site down.
The rest are documents. The UTM builder writes campaign links that Analytics can group without you inventing a naming scheme twice. The privacy policy generator produces a starting draft and not legal advice. The email signature generator emits table-based HTML, because that is still what mail clients render reliably in 2026. The favicon generator is here rather than under Image because what you get back is a set of files plus the markup that references them. The SERP preview is under Developer; the Open Graph card preview is under Social.