A free collection of SEO & page-integrity tools
This is the exact toolkit we reach for every day to run audits and tests — checking what bots, AI crawlers, and real users actually get from a page. No signup, no limits, no catch. Paste a URL and get answers in seconds.
Guard Essentials
The core production-monitoring diagnostics every site should run
Guard Page Audit
Run 30 production-grade checks — render integrity, SEO, Core Web Vitals, dependencies, and more.
Visibility Test
See how your site appears to Google, Bing, and AI crawlers like ChatGPT or Perplexity.
HTTP Bot Comparison
Compare how different crawlers see your site side-by-side.
Bot View Checker
See exactly what search engine bots see when they crawl your pages.
Snapshot Asset Test
Verify that images, videos, and stylesheets in your DataJelly snapshot resolve correctly via the base tag.
Site Crawler
Crawl your website to discover all pages via sitemap and intelligent URL mapping.
Render & Visibility
See exactly what Google, Bing, AI crawlers, and real users render on your pages — the heart of DataJelly Guard.
Guard Page Audit
Run 30 production-grade checks — render integrity, SEO, Core Web Vitals, dependencies, and more.
Visibility Test
See how your site appears to Google, Bing, and AI crawlers like ChatGPT or Perplexity.
HTTP Bot Comparison
Compare how different crawlers see your site side-by-side.
Bot View Checker
See exactly what search engine bots see when they crawl your pages.
Snapshot Asset Test
Verify that images, videos, and stylesheets in your DataJelly snapshot resolve correctly via the base tag.
Crawl & Site Health
Map your site, trace redirects, and surface site-wide issues at scale.
SEO Validation
Validate the markup and config files search engines and AI rely on.
Structured Data Validator
Validate JSON-LD schema markup for rich results and AI discoverability.
Sitemap Validator
Validate your XML sitemap format and check for errors.
Robots.txt Tester
Test and validate your robots.txt configuration for crawlers.
SEO Page Validator
Analyze any page for SEO readiness, indexability, structured data, and social tags.
Performance & Previews
Measure speed, Core Web Vitals, and how your links look when shared.
Page Speed Analyzer
Measure Core Web Vitals and get performance recommendations.
Lighthouse Test
Run a full Google Lighthouse audit — performance score, Core Web Vitals, diagnostics, and JS treemap for any URL.
Social Card Preview
Preview how your links look when shared on Slack, Twitter, LinkedIn, and WhatsApp.
Website Screenshot
Capture a visual screenshot of any website for quick audits.
Infrastructure
Check DNS, SSL, and the HTTP headers powering your site.
From a one-off check to always-on monitoring
These tools give you a snapshot. DataJelly Guard runs these production-grade checks continuously and alerts you the moment a page silently breaks for bots, AI crawlers, or users.