Professional SEO micro-tools. Free & instant.
Engineered for SEO specialists, growth marketers, and web engineers. Test robots.txt directives, measure title and meta description pixel lengths, verify canonical tags, and validate XML sitemaps without login walls or artificial paygates.
Instant Diagnostics
Run a live check right here, or explore individual tool pages below.
Four Core Diagnostics Engines
Each tool provides concrete technical answers and plain-English fix recommendations, not opaque scores.
Robots.txt Tester & Validator
Read any site’s robots.txt, test whether a specific path is crawlable by Googlebot or other user-agents, and trace the exact directive that allowed or blocked it.
- Line-by-line syntax checking
- Directive attribution for URL paths
- Detects fatal Disallow: / mistakes
- Auto-extracts declared sitemaps
Meta Title & Description Checker
Google truncates titles by rendered pixel width, not arbitrary character limits. Check exact pixel widths and preview your Google search snippet in real-time.
- Arial desktop advance-width calculation
- Simulated Google SERP snippet preview
- Title and description length evaluation
- Social Graph & Twitter Card signals
Canonical Tag Checker
Ensure search engines consolidate indexing signals to the correct page. Flag missing canonicals, non-self-referencing tags, and cross-domain duplicate directives.
- Self-referential vs cross-domain detection
- Catches duplicate canonical definitions
- Follows redirect chains to destination
- Evaluates HTTP X-Robots-Tag canonicals
XML Sitemap Checker & Validator
Auto-discover your sitemap from robots.txt, validate XML syntax against the sitemaps.org protocol, and test the HTTP status of URLs inside it.
- Auto-discovery via robots.txt and common paths
- Sitemap index expansion & child discovery
- Live HTTP status checks (flags 404s, redirects)
- Strict compliance with robots.txt rules
Complete Tools Directory
Thirteen specialized landing pages tailored to specific technical SEO search intentions. Every tool is completely free with no limits.
Robots.txt Tester
Paste a domain to read its robots.txt, then test any URL path against the rules and see exactly which directive allows or blocks it.
Launch toolRobots.txt Checker
Check a site’s robots.txt for the mistakes that quietly stop Google crawling: a missing file, a stray Disallow: /, syntax errors and no sitemap directive.
Launch toolRobots.txt Validator
Validate robots.txt syntax line by line. Every error and warning is reported with its line number and what to change.
Launch toolMeta Checker
Check a page’s title, meta description, canonical and robots tags in one pass — measured in pixels, the way Google actually truncates them.
Launch toolMeta Title Checker
See whether a page’s meta title fits in Google’s results. Measured in pixels rather than characters, because that is what decides truncation.
Launch toolMeta Description Checker
Check a page’s meta description length, see whether Google will truncate it, and preview the snippet as it will appear in search.
Launch toolTitle Tag Checker
Read the <title> tag of any page and check its length, uniqueness signals and how it renders in the search results.
Launch toolSEO Title Checker
Check whether a page’s SEO title is the right length, is actually present, and matches what Google will show for it.
Launch toolCanonical Tag Checker
Check a page’s rel="canonical" tag: whether it exists, whether it points at itself, another page, or another domain entirely.
Launch toolSitemap Checker
Find a site’s sitemap, validate its XML, and check the URLs inside it for 404s, redirects and robots.txt blocks.
Launch toolSitemap Finder
Find the XML sitemap for any domain. Reads the Sitemap directive in robots.txt, then falls back to the conventional paths.
Launch toolSitemap Validator
Validate an XML sitemap against the sitemaps.org protocol: namespace, structure, entry limits, lastmod dates and priority values.
Launch toolXML Sitemap Checker
Check an XML sitemap end to end: is it valid XML, is it the right namespace, and do the URLs inside it actually resolve?
Launch toolPixel Widths, Not Character Counts
Google truncates desktop search snippet titles at approximately 580–600 pixels. Because an uppercase ‘W’ is three times wider than a lowercase ‘l’, character limits are fundamentally inaccurate. Our engine calculates advance widths using the true Arial desktop rendering font.
SSRF-Safe Server Fetches
Browser-based tools fail because cross-origin resource sharing (CORS) blocks third-party fetches. Our secure backend fetch engine safely pulls robots.txt, HTML headers, and XML sitemaps while enforcing strict SSRF protections against private networks.
Respects Robots Protocol
When auditing XML sitemaps, our crawler fetches and respects the target domain’s robots.txt rules, honoring Crawl-delay directives and Disallow statements so your server is never an abusive crawler.