Free SEO & AI Optimization Tools

LK Forge SEO & AI Optimization Tools is a hosted suite of browser tools for the technical layer of search and AI visibility: the sitemap protocol, robots.txt, schema.org JSON-LD, Open Graph tags, UTM parameters and llms.txt. Build an XML sitemap, generate schema, FAQ and meta markup, preview your Open Graph card, tag campaign links with UTMs, publish an llms.txt, and control which AI crawlers (GPTBot, ClaudeBot, Google-Extended) can use your content for AEO/GEO. No installs, no sign-up, results instantly.

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llms.txt Generator

Build an llms.txt file that guides ChatGPT, Claude and other AI crawlers to your most important pages — the emerging AEO/GEO standard for AI answer engines.

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AI Crawler Control

Choose which AI crawlers may train on or fetch your content, then generate the robots.txt rules to block or allow GPTBot, ClaudeBot, Google-Extended and more.

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FAQ Schema Generator

Turn your questions and answers into valid FAQPage JSON-LD structured data for search engines and AI answer engines. Copy the code straight into your page.

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SERP Snippet Preview

See how your title and meta description look in Google, with live pixel-width truncation for desktop and mobile. Keep them within the limits.

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Readability Checker

Score how easy your content is to read — Flesch Reading Ease, grade level, Gunning Fog and SMOG — from any pasted text, instantly.

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Keyword Density Checker

See which words and 2–3 word phrases dominate your content, with frequency and density percentages and optional stop-word filtering.

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robots.txt Tester

Paste your robots.txt and any URL to see instantly whether a crawler is allowed or blocked — and exactly which rule decided it.

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XML Sitemap Validator

Paste or upload sitemap.xml to check it is well-formed, uses valid tags, and stays within the 50,000-URL and 50MB limits.

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Slug Generator

Turn any title into a clean, SEO-friendly URL slug — lowercase, hyphenated and accent-stripped, one slug per line. Copy in a click.

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Sitemap Generator

Paste your page URLs and build a valid XML sitemap with lastmod, changefreq and priority. Copy or download sitemap.xml — all in your browser.

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UTM Builder

Add utm_source, utm_medium and utm_campaign to any URL and get a ready-to-share tracking link. Copy in one click, with a recent-links history.

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Schema Markup Generator

Build valid JSON-LD structured data for FAQ, Article, Breadcrumb, LocalBusiness and Product. Copy the script tag straight into your page.

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Open Graph Preview

See how your link looks on Facebook, X and LinkedIn, and copy the og: and twitter: meta tags. A live social-card preview as you type.

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Meta Tag Generator

Create SEO title and description, Open Graph and Twitter Card tags with a live code preview. Copy or download — all in your browser.

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robots.txt Generator

Build a valid robots.txt with allow and disallow rules, crawl-delay and a sitemap URL. Copy or download — all in your browser.

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How the SEO Tools Work

Focused tools, one consistent interface. Pick a tool, fill in the fields, and copy or download the result instantly — nothing is uploaded.

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Pick a tool

Build and check crawl files with the Sitemap Generator, XML Sitemap Validator, robots.txt Generator and robots.txt Tester. Write your markup with the Meta Tag Generator, SERP Snippet Preview, Open Graph Preview, Schema Markup Generator and FAQ Schema Generator. Tune the content with the Readability Checker, Keyword Density Checker and Slug Generator. Steer AI answer engines with the llms.txt Generator and AI Crawler Control, and tag campaigns with the UTM Builder. Each one is a single page with one job.

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Fill in the fields

Enter your URLs, page details or campaign values. Everything updates live, on your device, with nothing sent to a server and no sign-up.

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Copy or download

Copy the generated sitemap, tags, JSON-LD or tracking link, or download a file. Then submit your sitemap in Google Search Console and paste tags into your page head.

Frequently Asked Questions

What SEO tools does LK Forge offer?
A free suite of browser tools grouped into five areas. Sitemaps and crawling: Sitemap Generator, XML Sitemap Validator, robots.txt Generator and robots.txt Tester. Tags and markup: Meta Tag Generator, SERP Snippet Preview, Open Graph Preview and Schema Markup Generator. Content and keywords: Readability Checker, Keyword Density Checker and Slug Generator. AI optimization: llms.txt Generator, AI Crawler Control and FAQ Schema Generator. Campaigns: UTM Builder. Every tool runs in your browser with no sign-up.
Are these SEO tools free?
Yes — every LK Forge SEO tool is completely free, with no account, no payment and no usage cap. Each one runs client-side, so the text, URLs and files you enter are processed on your device and are never sent to a server. Two things happen locally that are worth knowing: the UTM Builder saves up to eight copied links in your browser’s own localStorage so you can reuse them, and the Open Graph Preview asks your browser to load the image URL you type so it can draw the card. Apart from that image fetch, the tools keep working once the page has loaded, even offline.
Do I need to sign up or install anything?
No — the LK Forge SEO tools need no account and nothing to download. Open any tool in a modern browser on desktop or mobile, fill in the fields, and copy or download the result instantly. There is no extension to install and no server round-trip: every tool is a single static page that does its work in JavaScript on your device.
Which SEO tool should I use?
Use the Sitemap Generator to build a sitemap.xml to submit in Google Search Console, and the XML Sitemap Validator to check that file before you submit it. Reach for the robots.txt Generator to control crawling and the robots.txt Tester to confirm a URL is not blocked by accident. The Meta Tag, SERP Snippet Preview and Open Graph tools improve how your pages appear in search results and social previews, while the Schema Markup and FAQ Schema generators add the structured data that can unlock rich results. Use the llms.txt Generator and AI Crawler Control to steer AI answer engines, the Readability, Keyword Density and Slug tools to tighten the content itself, and the UTM Builder to tag campaign links so your analytics can attribute traffic.