JSON-LD Validator - Online Structured Data Syntax Checker
Paste JSON-LD and validate basic syntax and required properties for Article, Product, etc. Local only. Instant feedback.
UD5 Toolkit
Paste JSON-LD and validate basic syntax and required properties for Article, Product, etc. Local only. Instant feedback.
Convert JSON‑LD structured data into Turtle (TTL) notation. For semantic web and linked data developers. Client‑side.
Enter a URL and see a simulated preview of how the link will appear on major social platforms. Check tags.
Break a large XML sitemap into smaller ones under the 50MB/50,000 URL limit. Generates a sitemap index.
Generate an Article or BlogPosting structured data with headline, author, and image. For rich blog results.
Build a complete Event structured data with performer, location, and dates. Get Google‑ready JSON‑LD for tickets.
Enter a URL and fetch its Twitter card meta tags. See a live preview of how the tweet will appear. Debug social sharing.
Generate a LocalBusiness structured data snippet with name, address, phone, and opening hours. Boost local SEO.
Enter a URL and a user‑agent to see if it is allowed or blocked by the robots.txt file. Quick bot validation.
Paste an URL or HTML and see the h1‑h6 hierarchy as a tree. Detect skipped levels and improve accessibility. Client‑side.
Paste any article and get a list of the most relevant keywords using a simple TF‑IDF‑like model. Skip stop words. All local.
Paste your article and see a table of the most frequent words with their density percentages. Help avoid keyword stuffing. Local.
Enter a URL and see a nested list of all headings (h1‑h6). Check your document structure for SEO and accessibility. Pure fetch.
Paste your JSON‑LD or Microdata and test it against Google's Rich Results criteria. Get warnings. Local linter.
Enter a URL and get a one‑page report of titles, description, headings, image alts, and broken links. All from browser.
Enter a URL and see a nested list of all h1‑h6 tags. Check document structure for SEO and accessibility.
Enter a URL and see its favicon at all standard sizes. Check if it's properly defined. SEO basic check.
Trace the full redirect path of a URL. See every hop, status code, and final destination. Detect broken chains.
Paste a robots.txt file and validate its syntax. See if a specific user‑agent can access a path. Essential for webmasters.
Convert title to URL slug with options: ignore stop words, transliterate special characters, choose separator. SEO friendly.
Generate a complete <head> section with meta charset, viewport, SEO, favicon, and social tags. Customize and copy.
Create JSON-LD structured data snippets for articles, products, and events. Fill in fields and copy the code. SEO helper.
Fetch and extract all meta tags, open graph tags, and Twitter cards from a live URL. No server proxy, direct browser fetch.
Convert messy URLs into clean, keyword-rich slugs. Remove stop words, replace spaces with hyphens. Lowercase transformation. All local.
Enter a URL and trace the full redirect chain, seeing each hop's status code and location. Identify unnecessary redirects. Client-side fetch.
Preview how your page title will appear in Google SERPs. See pixel width and character count. Avoid truncation. Free local tool for SEOs.
Analyze text for keyword frequency and density. Highlights over-optimized terms. Perfect for content writers and SEO editors. Entirely browser-based.
Build a properly formatted robots.txt file with user-agent rules and sitemap location. Validate syntax in real time. Essential for webmasters.
Generate a standard XML sitemap for your website by entering a start URL. Crawls internal links directly from your browser. No server-side processing.
Generate comprehensive HTML meta tags for SEO and social sharing (Open Graph, Twitter Cards). Copy ready-to-use code. Boost your search visibility.