# OpenWebmaster by Mello Zone

> Free, evidence-first technical SEO and webmaster tools for checking, submitting, monitoring, and improving public websites.

OpenWebmaster separates observed responses from interpretation. Tool results are bounded to the URLs, files, logs, or provider data supplied by the user; the platform does not invent rankings, traffic, authority, indexing, or AI-visibility claims.

## Public pages
- [Free SEO & Webmaster Tools](https://openwebmaster.mellozone.site/): Improve your website with free SEO tools for sitemaps, robots.txt, metadata, structured data, keywords, and performance. No subscription required.
- [Free SEO Tools](https://openwebmaster.mellozone.site/tools/): Find free tools for technical SEO, sitemaps, keywords, metadata, performance, and reports. Browse by task or search the complete OpenWebmaster toolkit.
- [Robots.txt Checker and Generator](https://openwebmaster.mellozone.site/robots-txt/): Check live robots.txt access, page directives, and HTTP evidence, then build, validate, test, copy, and download a standards-aware UTF-8 robots policy.
- [Free Robots.txt Comparison Tool](https://openwebmaster.mellozone.site/robots-comparison/): Compare two robots.txt policies, review exact user-agent, Allow, Disallow, sitemap and unsupported-directive changes, and test path outcomes locally.
- [Free Robots Meta Tag and X-Robots-Tag Generator](https://openwebmaster.mellozone.site/robots-meta/): Build and review robots meta tags, X-Robots-Tag headers, Apache snippets and Nginx snippets with directive conflict checks and complete local exports.
- [XML Sitemap Validator and URL Status Checker](https://openwebmaster.mellozone.site/xml-validator/): Validate XML and gzip sitemaps for malformed entries, dates, duplicates, and nested indexes, then check selected sitemap URLs for HTTP status and redirects.
- [Free RSS and Atom Feed Parser](https://openwebmaster.mellozone.site/rss-feed-parser/): Extract URLs, titles, publication dates, update dates, categories, authors, and enclosure links from supplied RSS, Atom, or RDF feed source with local CSV, TXT, and JSON exports.
- [Indexability Checker](https://openwebmaster.mellozone.site/inspect/): Check a live URL for redirects, canonical tags, robots directives, schema, hreflang, Open Graph, X cards, titles, and descriptions.
- [Free On-Page SEO Checker](https://openwebmaster.mellozone.site/on-page-seo/): Check a live page for titles, descriptions, headings, language, viewport, image alt text, links, schema, hreflang, and social metadata.
- [Free Heading Outline Checker](https://openwebmaster.mellozone.site/heading-outline/): Check a page’s H1-H6 source outline, skipped levels, empty headings, duplicate heading text, duplicate IDs, heading anchors, redirects and exportable SEO findings.
- [Free Font Legibility and Zoom Checker](https://openwebmaster.mellozone.site/font-legibility-checker/): Check one public page for source-visible font-size, line-height, viewport zoom restrictions, text-size-adjust rules, font-display gaps, CSS imports, and stylesheet coverage.
- [Free Mobile SEO and Viewport Checker](https://openwebmaster.mellozone.site/mobile-seo-checker/): Check live source evidence for mobile viewport setup, language, UTF-8 clues, image alternatives, image dimensions, resource hints, blocking resource candidates, third-party resources, redirects, HTTPS, and crawler access.
- [Free HTML Language and Hreflang Checker](https://openwebmaster.mellozone.site/language-checker/): Check HTML lang, text direction, UTF-8, Content-Language, hreflang alternates, self-reference, x-default, canonical context and crawler access for a public page.
- [Free Locale-Adaptive Pages Checker](https://openwebmaster.mellozone.site/locale-adaptive-checker/): Compare one public URL across controlled Accept-Language headers for status, redirects, final URLs, HTML language, Content-Language, canonicals, hreflang, robots directives, source fingerprints, and Vary cache evidence.
- [Free Favicon and App Icon Checker](https://openwebmaster.mellozone.site/favicon-checker/): Check favicon links, /favicon.ico fallback behavior, web app manifest declarations, icon target status, content type, redirects, HTTPS state, cache policy, and cross-origin icon usage with bounded evidence.
- [Free Technical SEO Site Audit and Internal Link Checker](https://openwebmaster.mellozone.site/site-audit/): Crawl up to 25 same-site pages, map internal links and directory groups, find technical SEO issues, and manage evidence-backed tasks with local workflow fields and exports.
- [Free Internal Link and Anchor Text Checker](https://openwebmaster.mellozone.site/internal-link-checker/): Check a public page for source-visible internal links, anchor text, nofollow rel values, duplicate targets, fragments, query parameters, and path groups.
- [Free Broken Link Checker and Redirect Review](https://openwebmaster.mellozone.site/broken-link-checker/): Discover internal and external links from a live page, test up to fifty targets with bounded HEAD requests, and review confirmed 404 or 410 links, redirects, access limits, server errors, anchors, and follow state.
- [Free Bulk HTTP Status Code Checker](https://openwebmaster.mellozone.site/http-status-checker/): Check HTTP status codes, final URLs, redirect chains, HTTPS downgrade, content type, cache clues, X-Robots-Tag and failures for pasted URLs or sitemap imports.
- [Free Backlink Verifier and Link Monitor](https://openwebmaster.mellozone.site/backlink-monitor/): Verify up to 20 expected backlinks from live public source pages, inspect anchor and rel evidence, check destination responses, and export complete timestamped results.
- [Free Backlink Snapshot Comparison and New/Lost Link Tool](https://openwebmaster.mellozone.site/backlink-comparison/): Compare earlier and current backlink exports locally to find pairs added, removed, changed, or retained across source URLs, destinations, anchors, rel attributes, responses, and final URLs.
- [Free Link Intersect and Backlink Gap Tool](https://openwebmaster.mellozone.site/link-intersect/): Compare your supplied backlink sources with up to three competitor exports, find referring hosts or exact source pages absent from your baseline, and export the complete private matrix.
- [Free Local Citation and NAP Consistency Checker](https://openwebmaster.mellozone.site/local-citation-checker/): Check preferred and accepted business name, address, and phone wording across up to ten public listing pages with bounded live evidence and complete CSV or JSON exports.
- [Free Google Review Link Generator for Local SEO](https://openwebmaster.mellozone.site/google-review-link-generator/): Create a clean Google review request link from a Place ID, Google review URL, or supported Maps URL, then export a QR SVG, request copy, CSV, and JSON evidence.
- [HTTP Header Checker and Cache Policy Inspector](https://openwebmaster.mellozone.site/http-header-checker/): Inspect a public URL's terminal HTTP response, redirects, Cache-Control directives, freshness windows, validators, content delivery metadata, X-Robots-Tag, Link, and common security declarations without an artificial score.
- [Free GZIP, Brotli and Cache Checker](https://openwebmaster.mellozone.site/compression-cache-checker/): Check a public page or asset response for Content-Encoding, Vary: Accept-Encoding, Cache-Control, immutable assets, validators, declared size, redirects, and export CSV or JSON evidence.
- [Free Security Headers and HTTPS Redirect Checker](https://openwebmaster.mellozone.site/security-headers-checker/): Check HTTPS delivery, HTTP-to-HTTPS redirects, HSTS, Content-Security-Policy, frame protection, nosniff, referrer policy, permissions policy, cross-origin headers, mixed-content candidates, and technology disclosure with bounded evidence.
- [Free Security Header and CSP Generator](https://openwebmaster.mellozone.site/security-header-generator/): Generate reviewable CSP, HSTS, Referrer-Policy, Permissions-Policy, nosniff, and frame headers with Cloudflare Pages, Netlify, Apache, Nginx, CSV, and JSON exports.
- [Free Cookie Attribute Checker](https://openwebmaster.mellozone.site/cookie-checker/): Check a public response for redacted Set-Cookie attributes including Secure, HttpOnly, SameSite, Partitioned, Domain, Path, prefixes, lifetime, redirects, and response status without storing cookie values.
- [Free SSL Certificate and CT Log Checker](https://openwebmaster.mellozone.site/ssl-certificate-checker/): Check a hostname for live HTTPS response evidence and public Certificate Transparency records, including issuer, validity dates, key algorithm, SAN count, HSTS, redirects, and expiration cues.
- [Free Website IP Address and DNS Host Checker](https://openwebmaster.mellozone.site/ip-address-checker/): Check a website hostname for public A, AAAA, CNAME and CAA DNS records, retained TTLs, resolver status, HTTPS response, redirects, HSTS and cache-policy evidence.
- [Free Web Server Header and Technology Checker](https://openwebmaster.mellozone.site/web-server-checker/): Inspect a public HTML response for retained Server, X-Powered-By, Via, Cloudflare Ray, Vercel request ID and meta generator disclosures with clear evidence boundaries.
- [Free Domain Age and RDAP Registration Checker](https://openwebmaster.mellozone.site/domain-age-checker/): Check public RDAP registration evidence for a domain, including registration date, approximate age, expiration, last changed date, registry status, nameserver count, and DNSSEC delegation cues.
- [Free HTTP Header Comparison Tool](https://openwebmaster.mellozone.site/http-header-comparison/): Compare two live HTTP responses for exact status, redirect, cache, validator, crawler, content and browser security header changes.
- [Page Resource Inspector for Scripts, CSS and Images](https://openwebmaster.mellozone.site/resource-inspector/): Inspect a public page's source resources, parser-blocking scripts, render-blocking stylesheet candidates, image dimensions and alt attributes, loading hints, cross-origin requests, and legacy nomodule scripts without a synthetic score.
- [Free Tracking Tag, Analytics and Pixel Checker](https://openwebmaster.mellozone.site/tracking-tag-checker/): Check a public page for Google Tag Manager, analytics tags, ad pixels, session replay scripts, CRM tracking, data-layer tokens, consent cues, and export source-labeled evidence.
- [Free HTML, CSS and JavaScript Minifier](https://openwebmaster.mellozone.site/asset-minifier/): Minify supplied HTML, CSS, JavaScript and JSON locally, preview UTF-8 byte savings, estimate gzip output, and export the transformed asset without uploading code.
- [Free HTML Quality Checker for Deprecated Tags and Inline CSS](https://openwebmaster.mellozone.site/html-quality-checker/): Check pasted HTML for deprecated tags, inline CSS, inline event handlers, iframe titles, image attributes, metadata, Open Graph tags, X cards, JSON-LD validity, and minification hints.
- [Free AMP HTML Checker and Source Validator](https://openwebmaster.mellozone.site/amp-checker/): Check supplied AMP HTML source for required markup, runtime setup, canonical and viewport tags, boilerplate, component scripts, CSS limits, prohibited elements, and export CSV or JSON evidence.
- [Free JavaScript Error Checker for SEO](https://openwebmaster.mellozone.site/javascript-error-checker/): Analyze supplied JavaScript console logs or JSON error records for repeated errors, network failures, CSP or CORS blocks, source-map issues, third-party scripts, and export CSV or JSON evidence.
- [Free Response vs Rendered HTML Comparison Tool](https://openwebmaster.mellozone.site/rendered-html-comparison/): Compare supplied response HTML and rendered DOM HTML for JavaScript SEO differences in titles, metadata, canonical tags, robots directives, links, headings, text, image alt coverage, and JSON-LD.
- [Free HAR Request Waterfall Analyzer](https://openwebmaster.mellozone.site/request-waterfall-analyzer/): Analyze a supplied HAR file for request count, transfer bytes, resource mix, third-party origins, cache headers, compression evidence, HTTP protocol labels, redirects, errors, and slow wait phases.
- [Free Email Privacy Checker for Clear-Text Addresses](https://openwebmaster.mellozone.site/email-privacy-checker/): Check a public page for visible email addresses, mailto links, source-only addresses, obfuscated address patterns, and contact-form cues with source-labeled evidence.
- [Free SEO-Friendly URL and Parameter Hygiene Checker](https://openwebmaster.mellozone.site/url-hygiene-checker/): Review supplied URLs for tracking parameters, sensitive parameter names, fragments, duplicate redacted URLs, long paths, default index files, case variants, and trailing-slash variants without uploading the list.
- [Website Technology Checker and Stack Inspector](https://openwebmaster.mellozone.site/technology-checker/): Inspect a public website’s CMS, frameworks, analytics, marketing tools, payment libraries, fonts, delivery headers, DNS and mail-policy evidence with source-labeled findings.
- [PageSpeed Insights and Core Web Vitals Checker](https://openwebmaster.mellozone.site/pagespeed/): Run Google PageSpeed Insights for mobile or desktop and review separately labeled Lighthouse lab metrics, field experience, opportunities, diagnostics, version and timestamps.
- [Free SPF and DMARC Generator and Checker](https://openwebmaster.mellozone.site/spf-dmarc-generator/): Generate SPF, DMARC and optional DKIM TXT records, lint pasted mail policy records, export DNS-ready values, and verify publication with live DNS checks after deployment.
- [Content Inventory and Near-Duplicate Checker](https://openwebmaster.mellozone.site/content-inventory/): Crawl a public website and inventory content, metadata, indexability and links, then review exact duplicates and bounded SimHash near-duplicate candidates.
- [Free Technical SEO Report Builder](https://openwebmaster.mellozone.site/report-builder/): Import an OpenWebmaster site audit, apply safe report branding, arrange evidence sections, save private reusable templates, and create a print-ready PDF or script-free HTML SEO report.
- [Free Site Crawl Comparison Tool](https://openwebmaster.mellozone.site/crawl-comparison/): Compare two OpenWebmaster site-audit exports for exact changes in status, crawl controls, metadata, content fingerprints, internal-link observations, and technical findings.
- [Free Sitemap Comparison Tool](https://openwebmaster.mellozone.site/sitemap-comparison/): Compare two complete XML sitemap discoveries for exact URL presence, source-sitemap and lastmod changes with clear scope and evidence limits.
- [Free Image SEO, Alt Text and Delivery Inspector](https://openwebmaster.mellozone.site/image-seo/): Inspect image alt declarations, width and height attributes, responsive markup, live HTTP status, redirects, content type, declared length, cache headers, validators, and last-modified evidence.
- [Sitemap and Crawl Reconciliation](https://openwebmaster.mellozone.site/crawl-reconciliation/): Compare a bounded website crawl with XML sitemap discovery to find sitemap-only and crawl-only page candidates without overstating orphan status.
- [Bulk On-Page and Technical SEO Analysis](https://openwebmaster.mellozone.site/bulk-analysis/): Compare live technical and on-page SEO evidence across up to 20 URLs, including metadata, headings, language, images, links, schema, robots, and canonicals, with CSV and JSON exports.
- [Redirect Map Validator and Live Redirect Checker](https://openwebmaster.mellozone.site/redirect-checker/): Validate URL redirect maps for conflicts, loops, chains, self-redirects, status intent, and HTTPS downgrades, then verify final destinations against live responses.
- [Free Client-Side Redirect Checker](https://openwebmaster.mellozone.site/client-side-redirect-checker/): Check a public page for meta refresh tags, JavaScript redirect cues, History API URL rewrites, server redirect context, and exportable source evidence.
- [Free Redirect Rule Generator for Cloudflare, Apache, Nginx and Netlify](https://openwebmaster.mellozone.site/redirect-generator/): Generate reviewable redirect files from exact URL maps for Cloudflare Bulk Redirects, Apache .htaccess, Nginx and Netlify, with chain flattening, issue evidence and local exports.
- [Free .htaccess Redirect and SEO Rule Checker](https://openwebmaster.mellozone.site/htaccess-checker/): Check pasted Apache .htaccess rules for RewriteRule, Redirect, Header, Expires, compression, cache, X-Robots-Tag, HSTS, CSP, broad redirects, and export CSV, JSON, or starter snippets.
- [Canonical URL Checker and Cluster Auditor](https://openwebmaster.mellozone.site/canonical-checker/): Audit live canonical declarations across up to 20 pages, find missing or invalid tags, canonical chains and loops, duplicate clusters, target errors, and cross-origin hints.
- [Custom Source Search and HTML Content Checker](https://openwebmaster.mellozone.site/source-search/): Search live raw HTML or extracted visible text across up to ten public pages with case-sensitive contains and not-contains rules, occurrence counts, bounded snippets, and CSV or JSON exports.
- [CSS Selector Custom Extraction Tool](https://openwebmaster.mellozone.site/custom-extraction/): Extract normalized text or source attribute values from one public HTML page with bounded CSS selector rules, visible match and missing-value counts, invalid-selector isolation, and complete CSV or JSON exports.
- [Free Regex Source Extraction Tool](https://openwebmaster.mellozone.site/regex-extraction/): Run bounded browser-local regular expression extraction against supplied text, HTML, Markdown, logs, redirects, or source exports with capture groups, context, and complete CSV or JSON exports.
- [HTML Accessibility Checker and Source Inspector](https://openwebmaster.mellozone.site/accessibility-checker/): Inspect a public page for source-level accessibility signals including image alternatives, control names, link text, headings, landmarks, ARIA references, duplicate IDs, iframe titles, and table-header candidates.
- [DNS, SPF, DMARC, MX and CAA Checker](https://openwebmaster.mellozone.site/dns-checker/): Inspect a domain’s live A, AAAA, CNAME, NS, MX, TXT, CAA, SPF and DMARC evidence through encrypted public DNS, including TTLs, resolver status and bounded policy parsing.
- [DNS and Mail Policy Comparison](https://openwebmaster.mellozone.site/dns-comparison/): Compare two domains across A, AAAA, CNAME, NS, MX, TXT, CAA, SPF and DMARC resolver evidence, including exact records, TTLs, status and DNSSEC response bits.
- [Free Crawler Log Analyzer and Bot Traffic Checker](https://openwebmaster.mellozone.site/crawler-log-analyzer/): Analyze web server access logs in your browser, identify claimed search and AI crawler user agents, review paths and HTTP outcomes, and export privacy-reduced crawler events.
- [Free Meta Tag Generator and Search Appearance Tool](https://openwebmaster.mellozone.site/metadata/): Build escaped title, description, canonical, robots, Open Graph, and X card metadata, or import a live page and export complete HTML and JSON.
- [Free SERP Preview and Title Tag Checker](https://openwebmaster.mellozone.site/serp-preview/): Preview title links, meta descriptions, source labels, and display URLs with approximate desktop or mobile width checks, review findings, and CSV or JSON exports.
- [Free Open Graph and X Card Checker](https://openwebmaster.mellozone.site/open-graph-checker/): Build and check Open Graph and X card metadata, preview social share fields, find missing image alt text, duplicate fields, invalid URLs, and export local evidence.
- [Structured Data Generator and JSON-LD Validator](https://openwebmaster.mellozone.site/structured-data/): Generate safe JSON-LD for common schema.org entities or validate pasted structured data with bounded syntax, graph, URL, and type-specific checks.
- [Free Live Structured Data Checker](https://openwebmaster.mellozone.site/structured-data-checker/): Check a live page for JSON-LD scripts, schema.org context, graph nodes, duplicate @id values, article, product and breadcrumb fields, microdata, RDFa and exportable findings.
- [Hreflang Generator and Reciprocal Link Checker](https://openwebmaster.mellozone.site/hreflang/): Build HTML, HTTP header, and XML sitemap hreflang sets, then run bounded live checks for self-reference, return links, invalid codes, and missing alternates.
- [Free llms.txt Checker, Validator and Generator](https://openwebmaster.mellozone.site/llms-txt/): Inspect or build a v2 llms.txt file, validate its Markdown structure, resolve file-list links, check live destinations, and download clean UTF-8 source.
- [Free Keyword Generator and Intent Ideas Tool](https://openwebmaster.mellozone.site/keyword-generator/): Generate keyword ideas from seed phrases, source text, audience notes, competitors and custom modifiers with transparent reports, intent cues, and local CSV or JSON exports.
- [Free Keyword Grouper and Topic Clustering Tool](https://openwebmaster.mellozone.site/keyword-grouper/): Group up to 2,000 keywords with transparent lexical similarity, multilingual rule-based intent cues, deduplication, and complete local CSV or JSON exports.
- [Free Keyword Gap and Portfolio Comparison Tool](https://openwebmaster.mellozone.site/keyword-gap/): Compare your keyword list with up to three supplied competitor or research lists, find exact phrase gaps, account for duplicates, and export the full private matrix.
- [Free Word Count and Keyword Density Checker](https://openwebmaster.mellozone.site/word-count/): Count supplied text, Markdown, or HTML for words, sentences, paragraphs, top terms, n-grams, target phrase density, reading-time indicators, and readability estimates without uploading content.
- [Free SEO Portfolio Monitor](https://openwebmaster.mellozone.site/portfolios/): Group up to 1,000 user-supplied URLs across ten hosts, save private browser snapshots, compare target membership, and export coverage-aware portfolio evidence without invented SEO metrics.
- [Free SEO Opportunity Planner and Task Manager](https://openwebmaster.mellozone.site/opportunities/): Import real audit, PageSpeed, Search Console, analytics, rank, backlink, sitemap, or AI visibility evidence and turn it into an accountable browser-local SEO work plan.
- [Free SEO Alert Rule Evaluator](https://openwebmaster.mellozone.site/alerts/): Compare two supplied SEO evidence snapshots, customize alert rules, and export exact alert events without claiming scheduled delivery, ranking changes, crawl visits, or indexing.
- [Free Traffic Benchmark and Channel Comparison Tool](https://openwebmaster.mellozone.site/traffic-benchmark/): Compare supplied traffic benchmark exports across sites, channel mix, visits, users, views, conversions, geography and device scope without inventing market-share data.
- [Free Content Decay and Performance Finder](https://openwebmaster.mellozone.site/content-decay/): Review supplied Search Console page exports with optional analytics and crawl inventory evidence to find content refresh, consolidation, monitoring, and retain candidates.
- [Free Paid Search and PPC Ad Comparison Tool](https://openwebmaster.mellozone.site/paid-search-comparison/): Compare supplied paid-search exports for PPC keyword membership, ad copy, landing pages, positions, CPC, traffic and cost fields without claiming live ad-network data.
- [Free Search Console Performance Comparison Tool](https://openwebmaster.mellozone.site/search-performance-comparison/): Compare baseline and current Google Search Console query or page exports across clicks, impressions, CTR, and average position with complete private CSV and JSON evidence.
- [Free Rank History & SERP Snapshot Comparison](https://openwebmaster.mellozone.site/rank-history-comparison/): Compare two supplied keyword ranking exports across position, ranking URL, SERP features, engine, location, and device with private CSV and JSON evidence.
- [Free SERP Feature and AI Overview Comparison Tool](https://openwebmaster.mellozone.site/serp-feature-comparison/): Compare supplied SERP feature exports for AI Overviews, featured snippets, local packs, People Also Ask, owned features, citation URLs, search engine, location, device, and language.
- [Free Website Analytics & Traffic Comparison](https://openwebmaster.mellozone.site/analytics-comparison/): Compare two first-party analytics exports across pages, sources, channels, geography, devices, sessions, users, views, conversions, and transparent AI referral cues.
- [Free AI Visibility, Brand Mention & Citation Comparison](https://openwebmaster.mellozone.site/ai-visibility-comparison/): Compare supplied AI answer observations across exact brand mentions, responses, citation URLs, sentiment labels, platforms, language, and location with complete private exports.
- [Free SEO Content Brief & Draft Editor](https://openwebmaster.mellozone.site/content-brief/): Build a private reference-backed content brief from your draft, supplied phrases, questions, and reference texts with exact coverage, structural ranges, and complete exports.
- [Free Embeddable SEO Audit Widget](https://openwebmaster.mellozone.site/audit-widget/): Build a free, branded website audit iframe that accepts a public URL and hands visitors into OpenWebmaster's bounded technical SEO crawler without lead capture or automatic crawling.
- [Target Keyword Checker and Page Comparison](https://openwebmaster.mellozone.site/keyword-targeting/): Check exact target phrase presence across live URLs, titles, meta descriptions, H1 headings, and image alt text for up to five public pages without an artificial SEO score.
- [SEO Competitor and On-Page Comparison](https://openwebmaster.mellozone.site/domain-comparison/): Compare live technical and on-page SEO evidence across two to five public pages, including crawl access, metadata, headings, words, images, links, schema, hreflang, and social previews.
- [Page Change and Staging Comparison Tool](https://openwebmaster.mellozone.site/page-change-checker/): Compare two live public pages for exact changes to HTTP responses, robots directives, canonicals, metadata, headings, text and source fingerprints, links, structured data, hreflang, and social metadata.
- [Sitemap Generator and Explorer](https://openwebmaster.mellozone.site/sitemaps/): Generate UTF-8 XML sitemaps, split large URL sets, build sitemap indexes, validate XML and gzip sitemap trees, and check selected sitemap URLs for live HTTP responses.
- [IndexNow Submission Tool](https://openwebmaster.mellozone.site/indexnow/): Generate or verify an IndexNow key, submit changed URL batches, and review the provider response without confusing submission with indexing.
- [Google Indexing API Tool](https://openwebmaster.mellozone.site/google-indexing/): Send Google Indexing API notifications for eligible pages with your own service account, and review the notification history Google returns.
- [Google Search Console URL Inspection](https://openwebmaster.mellozone.site/search-console/): Inspect Google's stored view of a URL, review crawl and retrieval times, and submit sitemaps to a verified Search Console property.
- [AI Crawler Policy Checker](https://openwebmaster.mellozone.site/ai-discovery/): Check one URL across search indexing, AI search, user-triggered retrieval, model training, and open web corpus robots.txt policies.
- [Open Search Observatory](https://openwebmaster.mellozone.site/observatory/): Public, source-labeled search and crawler evidence with explicit limitations.
- [Crawler ROI — Open Search Observatory](https://openwebmaster.mellozone.site/observatory/crawler-roi/): Calculate crawler requests per measurable referral with source-specific attribution limits.
- [Crawler directory — Open Search Observatory](https://openwebmaster.mellozone.site/observatory/crawlers/): A Cloudflare Radar-sourced public bot identity directory with explicit evidence limits.
- [Crawler policy guide — Open Search Observatory](https://openwebmaster.mellozone.site/observatory/crawlers/policy/): Distinguish search, agent, training, archive, and analysis crawlers before setting access policy.
- [Methodology — Open Search Observatory](https://openwebmaster.mellozone.site/observatory/methodology/): Sources, confidence language, privacy classes, trust-score weights, and known limitations.
- [Public research profiles — Open Search Observatory](https://openwebmaster.mellozone.site/observatory/profiles/): Build a source-separated public web evidence profile without exposing private integrations.

## Optional
- [Sitemap index](https://openwebmaster.mellozone.site/sitemap.xml): Machine-readable public sitemap index.
- [Robots policy](https://openwebmaster.mellozone.site/robots.txt): Crawler access policy and sitemap declaration.
- [Security contact](https://openwebmaster.mellozone.site/.well-known/security.txt): Machine-readable vulnerability disclosure contact file.