Validation Tools: 4 Tools Compared (2026)
Validate robots.txt, sitemaps, structured data and links to keep technical SEO error-free
This curated list compares 4 validation tools tools — including Broken Link Checker, Robots.txt Checker, Rich Result Checker — by features, free plans, pricing and API support, so you can shortlist the right stack in minutes.
Broken Link Checker
Automatically detects and reports every broken external and internal link — essential for site upkeep
Robots.txt Checker
Google’s official robots.txt tester — verify file syntax and crawler access rules
Rich Result Checker
Google’s official Rich Results Test — check whether your pages qualify for rich snippets
XML Sitemap Checker
An online XML sitemap validator that checks for format errors and URL validity