SEO Tools

Schema Markup Generator, Meta Description Tool, SERP Preview and Sitemap Validator

Technical SEO without the subscription. Generate structured data and check it, write meta tags that fit, preview how a page will look in search results and on social, produce a correct robots.txt and redirect rules, and audit a page's headings, internal links and accessibility. Each tool covers one job and explains what search engines actually do with the output.

Every SEO tool

Hreflang Generator

Generate hreflang link tags, headers or sitemap XML for multilingual pages.

Local Business Schema Generator

Build LocalBusiness JSON-LD with address, geo, opening hours and social profiles.

Meta Description Generator

Draft meta descriptions from your own page text, trimmed to length.

Redirect Generator

Turn an old-to-new URL list into 301 rules for Apache, Nginx, Netlify and Vercel.

Robots.txt Checker

Check a robots.txt file line by line before you deploy it.

Sitemap Validator

Validate sitemap.xml and sitemap index files against the sitemaps.org protocol.

Title Length Checker

Check page titles and meta descriptions by pixel width, not just characters.

UTM Campaign URL Builder

Build correctly encoded UTM campaign links with consistent naming.

WCAG Checker

Find WCAG accessibility failures in pasted HTML, with the criterion each breaks.

Structured data

Five generators produce JSON-LD for the schema types most sites need: article, FAQ, product, breadcrumb and local business. Fill in the fields, copy the script block into the page head. The schema validator then parses any JSON-LD or page URL, checks it against schema.org types and reports missing required properties and the values Google's rich results need.

Meta tags and previews

The meta description generator drafts a description to length from a page's content and counts characters and pixels as you edit. The title length checker does the same for titles, since truncation is by pixel width not character count. The meta tag checker fetches a URL and lists every title, description, canonical, robots and Open Graph tag it finds, with the problems. SERP preview shows the result as it would appear on desktop and mobile; Twitter card preview does the same for a shared link.

Canonical, hreflang and redirects

The canonical URL generator normalises a URL and produces the link tag; hreflang generates the full set of alternate tags for a page's language and region versions, including the x-default, and catches the reciprocal links that are easy to miss. The redirect generator writes 301 rules for Apache, Nginx, Netlify, Vercel and Cloudflare from a simple old-to-new list.

Crawling

Robots.txt builds a file from allow and disallow rules per user agent and explains what each directive does and does not do. The sitemap validator fetches or accepts an XML sitemap, checks its structure, URL count and last-modified dates, and flags URLs that redirect or 404.

On-page audits

The heading structure checker shows a page's H1–H6 outline and points out skipped levels and multiple H1s. The internal link analyser lists every internal link on a page with its anchor text, target and status, so orphaned pages and broken links are visible. The WCAG checker runs the automated accessibility checks — contrast, alt text, labels, landmarks — that overlap heavily with what search engines reward.