Web & SEO

Create SEO, Open Graph and Twitter/X tags for a web page.

Create a clear robots.txt file to guide web crawlers.

Add UTM parameters to a campaign URL.

Create hreflang tags from localized page versions.

Create an XML sitemap from a list of URLs.

Preview a search result from a title and meta description.

Create JSON-LD structured data ready to embed in a web page.

Validate JSON-LD syntax and detect types, entities, and structural warnings.

Compare two sitemaps or URL lists and identify added and removed URLs.

Encode or decode a URL, its parameters, and any special characters it contains.

Extract every URL from text and automatically remove duplicate addresses.

Turn a title or phrase into a clean slug that is ready to use in a URL.

Validate, normalize and inspect web addresses locally.

Parse URL parameters or build a query string from key-value pairs.

Classify internal, external, and relative HTML links and inspect nofollow, sponsored, and ugc.

Generate 301 rules for Apache, Nginx, Netlify, or Vercel from a URL mapping.

Measure contrast between two colors and check WCAG AA and AAA levels.

Analyze key SEO signals in HTML locally.

Detect noindex, nofollow and canonical inconsistencies from HTML.

Measure term frequency, phrase occurrences, and density in text or HTML.

Identify the browser, operating system, device and bots in a User-Agent string.