Build, preview & optimize for search
Generate sitemaps, meta tags, schema markup, and robots.txt files, or check keyword density and readability — free, fast, and built to run entirely in your browser.
What are SEO tools?
SEO tools cover the technical groundwork that goes into getting a page found and displayed correctly — writing valid meta tags, generating a sitemap search engines can crawl, structuring schema markup, previewing how a link looks when shared, and checking that content reads well and uses keywords sensibly. None of this needs a full SEO suite; it needs a page that produces the right markup or file in seconds.
Every tool in this collection runs directly in the browser using plain JavaScript — building strings, parsing text, and generating files locally. Nothing entered here is uploaded to a server, so drafts, unpublished URLs, or internal content stay private the entire time.
Who uses these tools, and for what
Developers reach for the sitemap, robots.txt, and hreflang generators when launching or restructuring a site, marketers use the UTM builder and Open Graph preview when setting up a campaign, and writers use the keyword density and readability checkers to sanity-check a draft before it goes live.
Why they're free, fast, and private by default
SEO tasks often involve unpublished URLs or draft copy, so every tool here processes everything client-side with nothing uploaded or retained after the tab closes. New SEO tools are added here as they're built.