Free SEO Tools

53 free SEO tools and 10 everyday calculators that run entirely in your browser. Nothing uploaded, nothing stored, no signup.

Built by a link builder who uses them on client work every day, not by a SaaS company that wants your email address first.

Every tool

All of them run entirely in your browser. Nothing you paste is uploaded, stored or sent anywhere.

Link building

How Hayk judges a prospect, what a campaign costs, and the outreach that lands the link.

  • Anchor Text Distribution Checker Paste a backlink list and see the anchor mix — branded, exact-match, partial, naked, generic — with a warning when exact-match crosses a spam-risk threshold.
  • Link Building Outreach Email Generator Write guest post, resource page, broken link and unlinked mention pitches that sound like a person, not a template.

On-page

Titles, headings, snippets and the things a crawler reads first.

  • SERP Snippet Preview See a result exactly as it renders on desktop and mobile, with real pixel-width truncation rather than a character count.
  • Title & Meta Description Checker Live pixel-width check on a title and description, with warnings before Google truncates them.
  • Heading Structure Checker Paste a page and see its H1–H6 outline, with skipped levels and multiple H1s flagged.
  • Image Alt Text Checker List every image on a page with its alt text, and flag the ones that are missing, empty or stuffed.
  • Open Graph Preview Preview how a URL unfurls on Facebook, LinkedIn and X, and catch a missing og:image before you post.
  • Meta Tag Generator Generate a complete head block — title, description, canonical, robots, Open Graph, Twitter and viewport — from one form, with live pixel-width checks on the parts Google truncates.
  • Twitter / X Card Preview See how a link renders as a summary or large-image card on X, and catch the missing tag that makes it fall back to a bare URL.
  • Noindex Tag Generator Work out the right way to keep a page out of the index — meta tag, HTTP header or neither — and get the exact snippet, including the robots.txt mistake that stops noindex ever being seen.
  • URL Length Checker Check a URL list for length, depth, parameters, uppercase, underscores and the other things that make a URL harder to crawl and uglier to link to.
  • SEO Content Score Score a draft against a target keyword on placement, depth, structure, readability and links, and get the specific fixes rather than a number.
  • Image Filename SEO Generator Turn camera filenames into descriptive, hyphenated, lowercase image names with matching alt text, in bulk.

Technical

Robots, sitemaps, canonicals and structured data.

  • Schema Generator (JSON-LD) Valid JSON-LD for Article, Product, LocalBusiness, Breadcrumb and Person, ready to paste into a head tag.
  • FAQ Schema Generator Turn a list of questions and answers into valid FAQPage JSON-LD.
  • Robots.txt Generator Build a valid robots.txt from checkboxes, with per-bot rules and the sitemap directive included.
  • Sitemap.xml Generator Paste a URL list and get a valid sitemap.xml with lastmod, changefreq and priority.
  • Canonical URL Generator Work out the right canonical for paginated, parameterised and duplicated URLs, and get the tag to paste.
  • Hreflang Generator Build a complete, reciprocal hreflang cluster for a page in any number of languages, with x-default handled and the return-tag errors caught before Google finds them.
  • Robots.txt Tester Paste a robots.txt and a URL and see exactly which rule wins, for any crawler. Implements the longest-match precedence Google actually uses, not the first-match rule people assume.
  • XML Sitemap Validator Paste a sitemap and get every error Search Console would report — bad dates, over-limit files, mixed hosts, relative URLs, missing namespaces — with the line each one is on.
  • Meta Robots Generator Build a meta robots tag or an X-Robots-Tag header from the directives you actually want, with the combinations that cancel each other out flagged as you pick them.
  • 301 Redirect Generator Turn a list of old and new URLs into ready-to-paste redirect rules for Netlify, Apache, Nginx, Cloudflare or WordPress, with loops and chains caught before you ship them.
  • HTTP Status Code Checker Look up any HTTP status code and what it means for crawling, indexing and link equity — plus a decoder for response headers you have already captured.
  • Canonical Tag Checker Paste a page and see every canonical signal it sends, with the conflicts that quietly de-index pages: multiple canonicals, relative URLs, canonical plus noindex, or a canonical pointing somewhere else entirely.
  • JSON-LD Schema Validator Paste structured data and get syntax errors, missing required properties and rich-result eligibility per type, without sending your markup to anybody.

Content

Readability, density and length, for the writing itself.

  • Keyword Density Checker Word count, keyword frequency and an n-gram breakdown for a block of copy.
  • Readability Checker Flesch reading ease, grade level and sentence-length distribution, with the hardest sentences highlighted.
  • Slug Generator Turn a title into a clean, lowercase, hyphenated URL slug, with stop words and accents handled.
  • Keyword Clustering Tool Paste a keyword list and get it grouped into pages. Clusters on shared terms and intent, so you find out which fifty keywords are one article before you write fifty articles.
  • N-gram Analyzer Break any text into its most frequent two, three and four-word phrases, with stop words handled properly, so you can see what a page is actually about.
  • Duplicate Content Checker Compare two pages and see the overlap sentence by sentence, with a similarity score and the duplicated passages highlighted in both.
  • Keyword Intent Classifier Sort a keyword list into informational, commercial, transactional and navigational, so you stop pointing a product page at a question.
  • Content Brief Generator Turn a target keyword into a working brief — heading skeleton, word count, entities to cover, questions to answer and internal links to place.
  • Topic & Keyword Extractor Pull the terms a page is genuinely built on out of its text, ranked by how much work each one is doing, using TF-IDF rather than raw counts.
  • Text Similarity Checker Score how alike two texts are on cosine, Jaccard and shared-phrase measures, and see which one your rewrite actually moved.
  • Keyword Cannibalization Checker Paste a Search Console export and find the queries where two or more of your pages compete with each other.

Links & tracking

Internal linking and campaign tagging.

  • UTM Builder Build tagged campaign URLs with consistent source, medium and campaign values, and copy them in one click.
  • Disavow File Generator Build a valid disavow.txt from a list of bad links, collapsing to domain level where it matters, with the format Google actually accepts and a warning about when not to use it.
  • Internal Linking Planner Map your pages onto your priority pages and get a concrete list of links to add — which page, which anchor, which target — instead of a vague instruction to interlink more.
  • Redirect Chain Analyzer Paste a redirect map and see every chain and loop it contains, how many hops each takes, and the flattened one-hop rules that replace them.

GEO & AI search

Whether an AI answer engine can read you, cite you and is allowed to.

  • llms.txt Generator Build an llms.txt that tells an AI answer engine what your site is, which pages matter and in what order — the emerging convention, generated correctly.
  • AI Crawler Checker Paste your robots.txt and see, bot by bot, which AI crawlers you are allowing — GPTBot, ClaudeBot, PerplexityBot, Google-Extended and the rest — and which of those affect whether you get cited.
  • AI Crawler Control Generator Decide which AI crawlers may train on you, which may cite you, and which get nothing — then generate the robots.txt rules and meta tags that say so.
  • AI Search Readiness Checker Check a page against what actually gets it quoted in an AI answer: extractable claims, direct answers, structure, freshness signals and attribution.
  • LLM Visibility Checklist Work through what makes a brand visible to a language model — entity clarity, third-party mentions, consistent facts — and score where you stand.
  • Citation Readiness Checker Score a page on how quotable it is: whether it states facts an answer engine can lift, attributes them, dates them and makes the source obvious.
  • GEO Content Checklist The generative-engine-optimisation checklist for a single piece of content, from question coverage to statistics to the comparison table AI answers keep reaching for.

Want the judgement, not just the tool?

The tools apply the same standards used on client work. If you would rather someone did it for you, that is the service.

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