OneTaskSEO Tools
Meta Description Generator, Schema Markup Validator, Robots.txt Checker and Sitemap Validator
Tools for search engine optimisation. Write and preview meta titles and descriptions, check keyword density, generate schema markup, robots.txt files, sitemaps and redirects, and preview how a page looks when shared. Everything runs locally.
32 tools tagged SEO
Article Schema Generator
Build Article, NewsArticle or BlogPosting JSON-LD with the properties Google requires.
Breadcrumb Generator
Build accessible breadcrumb navigation with optional BreadcrumbList schema.
Breadcrumb Schema Generator
Build BreadcrumbList JSON-LD and an accessible nav from a Name | URL trail.
Canonical URL Generator
Normalise URLs to their canonical form and generate rel=canonical tags.
Content Truncator
Shorten text to a character or word limit without cutting words.
FAQ Schema Generator
Turn a list of questions and answers into FAQPage JSON-LD structured data.
Heading Structure Checker
List a page's h1–h6 in order and flag skipped levels, missing h1, empties.
Headline Capitaliser
Capitalise headlines in AP, APA or Chicago style.
Hreflang Generator
Generate hreflang link tags, headers or sitemap XML for multilingual pages.
Internal Link Analyzer
List a page's links with anchor text, internal/external split, nofollow and repeats.
Keyword Density Checker
Word and phrase frequency with density percentages.
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.
Meta Tag & Open Graph Checker
Check title, description, canonical, Open Graph and Twitter card tags in pasted HTML.
Meta Tag Generator
Generate the head meta tags a page needs, with robots and canonical done right.
OG Image Generator
Make a 1200×630 Open Graph share image from a title and colours.
Open Graph Preview
Preview your link card on Facebook, LinkedIn, Slack, Discord and WhatsApp.
Open Graph Tags Generator
Generate Open Graph and Twitter card meta tags for rich link previews.
Product Schema Generator
Build Product and Offer JSON-LD with price, availability, identifiers and rating.
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.
Robots.txt Sensitive Path Checker
Spot robots.txt rules that point attackers at sensitive paths.
Schema Markup Validator
Validate JSON-LD schema.org markup for required properties and format errors.
Schema.org Markup Generator
Generate JSON-LD for Organization, Person, WebSite, Event, Video and Software types.
SERP Preview
Preview your page title and description as a Google search result.
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.
Twitter Card Preview
Preview your link as an X (Twitter) card and copy the meta tags.
URL Slug Generator
Turn titles into clean, lowercase, hyphenated URL slugs.
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.
XML Sitemap Generator
Turn a list of URLs into a valid sitemap.xml in seconds.