SEO & Webmaster

Inspect meta tags, robots rules and structured data to keep your site search-ready.

QR Code Generator
Turn any link, Wi-Fi login or contact card into a downloadable QR code instantly — nothing uploaded.
Barcode Generator
Generate print-ready 1D barcodes (Code 128, EAN-13, UPC-A, Code 39) in your browser — free, no upload.
UTM Link Builder
Build clean campaign URLs with the five traditional UTM parameters, entirely in your browser.
XML Sitemap Generator
Turn a reviewed list of page URLs into a standards-based XML sitemap without crawling or uploading the site.
Schema Markup Generator
Generate escaped JSON-LD script templates for WebSite, Article, or Organization from visible page facts.
Bulk QR Code Generator
Generate up to 20 separate QR Code PNGs from unique lines locally using the project’s existing QR encoder.
Keyword Density Checker
Count Unicode words and an optional exact phrase, then inspect transparent density percentages without ranking promises.
Robots.txt Generator
Create a standards-aligned robots.txt file for one website without sending configuration data to a server.
Ads Txt Generator
Build a standards-shaped ads.txt file from explicit authorized-seller details, with strict field validation, duplicate protection and a ready download.
Bulk URL Generator
Generate up to 10,000 validated HTTP or HTTPS URLs from one explicit {n} template, with stepped ranges, descending sequences and zero padding.
Canonical Tag Generator
Turn a preferred absolute HTTP or HTTPS URL into an HTML-escaped rel=canonical link element with browser-standard normalization and fragment removal.
Email Address Obfuscator
Convert a validated email address into an entity-only mailto anchor that deters basic plaintext scrapers while remaining clickable in ordinary browsers.
Hreflang Generator
Generate one consistent set of escaped HTML alternate links from locale-and-URL rows, including canonical casing and optional x-default fallback.
Htaccess Generator
Create a narrow Apache 2.4 .htaccess for fixed-host HTTPS canonicalization, optional directory-listing disablement and a local custom 404 path.
htaccess to Nginx Converter
Translate a deliberately narrow, auditable subset of Apache .htaccess directives into review-ready Nginx lines while surfacing every condition or unsupported rule instead of guessing.
Link Extractor
Extract unique href values from pasted HTML, resolve relative paths against an optional base URL and omit executable schemes without requesting any discovered destination.
Meta Robots Generator
Build a validated robots meta tag and equivalent X-Robots-Tag header from current Google-supported indexing and preview controls without contradictory combinations.
Meta Tag Generator
Generate a clean, escaped basic HTML head block with charset, viewport, title, description and optional author metadata while keeping specialized SEO and social tags separate.
Nginx Config Generator
Create a narrow static-site Nginx HTTP server block from validated domain, root, fallback, cache and gzip choices with explicit testing and TLS limitations.
Open Graph Generator
Generate the four required Open Graph properties plus validated optional description, site name and locale with exact HTML escaping and no platform-specific guesswork.
Serp Snippet Preview
Compare a page title, description, and URL in a clear desktop or mobile search-result simulation before publishing.
Sitemap URL Extractor
Turn a pasted XML sitemap or sitemap index into a clean, deduplicated, one-URL-per-line list without uploading the file.
Keyword Combiner
Combine two keyword lists into a complete, ordered Cartesian product and copy up to 10,000 unique phrases without silent truncation.
Structured Data Checker & Extractor
Extract JSON-LD and Microdata from pasted HTML, inspect each discovered item, and surface missing high-value properties with evidence-linked guidance instead of claiming rich-result eligibility.
llms.txt Generator
Create a concise, reviewable llms.txt proposal file or validate an existing draft against the documented Markdown order without implying crawler adoption or ranking gains.
GEO Brand Question Generator
Turn one brand and industry description into a deterministic four-stage research-question matrix for manual AI-search monitoring without calling a model or presenting invented demand.
HTML Page Weight Analyzer
Measure the UTF-8 byte weight of pasted HTML, separate inline code and embedded data from external references, and compare the response body with Googlebot's current 2 MB fetch boundary without pretending to fetch the live page.
AI Bot Robots.txt Checker
Check one robots.txt file against 32 AI and AI-adjacent crawler product tokens with RFC 9309 matching, entirely in your browser.

About these tools

Every tool in seo & webmaster runs locally in your browser: files are processed on your device and never uploaded to a server. That makes them fast, private and safe to use with sensitive documents, at work or at home.