Content-Type Header Validator

Generate an XML sitemap for any website. Crawls internal pages from start URLs (with depth + page limits), deduplicates URLs, and stores a ready-to-submit sitemap.xml plus a structured dataset and summary for SEO audits.

Check SSL/TLS certificates for any website: expiration date, issuer, subject, hostname match (SNI), chain/authorization status, and common HTTPS misconfigurations. Useful for SEO audits, security checks, and uptime monitoring.

Check if a website has a valid favicon and icon setup for SEO and UX. Detects <link rel=icon> tags, default /favicon.ico, Apple touch icons, mask-icon, and web manifest icons. Validates URLs, HTTP status codes, content types, and reports missing/broken icons.

Convert any website into an RSS feed automatically. Monitor blogs, news sites, e-commerce stores for new content. Get instant notifications when pages change. Perfect for content aggregation, monitoring competitors, and staying updated. Export to RSS, JSON, or XML.

Crawl a website (or list of pages) and detect broken links (404/500), unreachable URLs, and invalid asset references. Generates a structured report for SEO audits, QA testing, and website maintenance.

Check and validate Open Graph (og:*) meta tags to improve link previews on Facebook, LinkedIn, Slack, and more. Detect missing/empty OG tags (og:title, og:description, og:image, og:url, og:type), duplicates, invalid URLs, and optional image URL accessibility checks.

Extract and validate structured data from any web page for SEO. Parses JSON-LD, detects Microdata and RDFa, highlights schema.org types, and reports common markup issues.

Check common HTTP security headers for one or more URLs (Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP/COEP/CORP). Useful for quick security hardening audits.

Validate Schema.org structured data for SEO. Parses JSON-LD, detects Microdata and RDFa, highlights schema types, and reports common issues like invalid JSON-LD, missing @type, non-schema.org @context, and missing key properties for popular schema types.

Audit web pages for missing, empty, and low-quality image alt text. Extracts <img> tags, flags missing/empty/generic alt attributes, and produces per-page results for SEO and accessibility (WCAG) reviews. Supports depth-limited link crawling and outputs a SUMMARY + REPORT for QA and monitoring.