SEO & Marketing
(10)Audit, optimize and spy on the SEO signals that move your pages up the SERPs.
Meta Description Length Checker
Measure a meta description in characters and estimated pixels, compare editorial ranges, and inspect illustrative desktop and mobile previews.
Google SERP Simulator
Preview an approximate Google-style search snippet with character limits for mobile and desktop. Your draft stays in this browser session.
HTTP Security Headers Checker
Paste HTTP response headers and review HSTS, CSP, clickjacking, MIME, referrer and cross-origin policies locally in your browser.
XML Sitemap Validator
Check sitemap XML in your browser for parse errors, missing locations, duplicate URLs, and common sitemap field values.
Canonical Tag Generator
Generate a valid rel=canonical link tag for any URL. Includes URL validation and the common mistakes to avoid.
Canonical URL Checker
Paste a page's HTML and check its rel=canonical tag: is it present, is it a valid absolute URL, does it match the page URL?
Broken Link Checker
Paste a page URL and check its outbound links for 404s and other HTTP errors, with the status code for each link.
Breadcrumb Schema Generator
Generate valid BreadcrumbList JSON-LD for any page hierarchy. Produces schema.org markup ready to paste into your site head.
Backlink Anchor Text Analyzer
Paste backlinks, CSV rows, URL | anchor pairs or plain anchor lines to count repeated anchor text and export Anchor Text,Count,Share CSV.
Word Frequency Counter
Find the most repeated words in any text with counts and density percentages. Useful for editing, SEO checks and content audits.