SEO Tools

A free suite of online SEO tools — meta tags, schema, SERP preview, robots.txt, sitemap, hreflang, llms.txt and more.

100% Browser-Based • Local Processing

Meta & social tags

Meta Tag Generator Title, description, canonical, robots, Open Graph and Twitter Card in one paste-ready block. Open Graph Generator Open Graph tags with a live preview of the social card they produce. Twitter Card Generator Card tags for X, with a live preview and the image rules each card type actually has. Canonical Tag Generator A correct rel=canonical to consolidate duplicate URLs onto the page you want ranked. Hreflang Tag Generator hreflang tags for multilingual pages, with x-default and real language and region code validation.

Structured data AEO

JSON-LD Schema Generator Organization, Product, Event, Recipe and six more types from one form. FAQ Schema Generator FAQPage JSON-LD from your question-and-answer pairs. HowTo Schema Generator HowTo JSON-LD from your steps, and a straight answer about its retired rich result. Breadcrumb Schema Generator BreadcrumbList built from a URL, with the positions numbered for you. Article Schema Generator Article and BlogPosting markup, with the author and date checks the type really needs.

SERP & on-page

SERP Snippet Preview Your title, URL and description as Google renders them, truncated to the pixel. Keyword Density Analyzer Word and phrase frequency with stopword filtering — a diagnostic, not a target. Heading Structure Analyzer The H1–H6 outline a crawler sees, with skipped levels and stray H1s flagged. Robots Meta Tag Generator The robots meta tag, plus the X-Robots-Tag header that does the same job for files.

Crawl & technical

Robots.txt Generator A valid robots.txt with user-agent rules, allow and disallow paths, and a sitemap line. XML Sitemap Generator An XML sitemap from a list of URLs, with lastmod, ready to copy or download. UTM Campaign URL Builder Campaign tracking URLs with UTM parameters, encoded the way analytics expects.

GEO AI era

llms.txt Generator An llms.txt so answer engines can find what actually matters on your site. AI Crawler Control Allow or block GPTBot, ClaudeBot, PerplexityBot and seventeen more, one bot at a time. Schema Markup Validator Check JSON-LD for syntax and missing properties, with the exact line and column.

Some jobs live in another category, and we link rather than duplicate. For turning a title into a slug or counting word frequency across a document, see Text Tools. For formatting JSON by hand or testing a regular expression, see Developer Tools. Every tool on this page runs in your browser: nothing you paste is uploaded, and there is no account to make.

Privacy Focused

🔒 Local Processing. Your site data never leaves your device.

Instant Results

🌐 Fully Client-Side. Runs instantly in your browser.

No Signup

⚡ No accounts. No API keys. Just open and use.

Browser Based

🚀 No installs, no crawlers, no site verification.

Overview

What are the SEO Tools?

Randomly's SEO tools are free, browser-based utilities for search and AI visibility — generate meta tags, schema markup, robots.txt, sitemaps and hreflang; preview your Google snippet; analyze keywords and headings; and prepare for AI engines with llms.txt and AI-crawler control. Every tool runs locally, with no signup.

Need to fix your on-page SEO, add structured data, or get ready for AI search? This is the full set of Randomly's SEO, GEO, and AEO tools in one place — 20 generators and analyzers covering meta tags, schema, SERP, crawling, and the AI era.

Unlike the big SEO suites, there's no login wall and nothing is uploaded: every tool runs entirely in your browser, so your URLs, content, and markup stay private. Search for a tool by name, or browse the categories below.

Details

Good to know

  • No login wall: free, no account, no upload — your data stays in your browser.
  • SEO + GEO + AEO: classic on-page tools plus structured data, llms.txt, and AI-crawler control for AI search.
  • Honest by design: generators output code you add; validators check structure, not Google's private ranking; AI directives are advisory.
  • Works everywhere: any modern browser, desktop or mobile; many work offline once loaded.
Support

Frequently Asked Questions

What are these SEO tools?

They're free, browser-based utilities for search-engine and AI-search optimization — generators for meta tags, schema markup, robots.txt, sitemaps and hreflang, plus analyzers like a SERP snippet preview, keyword density, and heading structure, and AI-era tools like an llms.txt generator and AI-crawler control. Each runs entirely in your browser.

Are all these SEO tools free?

Yes. Every SEO tool on Randomly is free with no account, no trial, and no paywall. Unlike Ahrefs, Semrush, or Moz, there's no login wall — you open the page and use it. There's no daily limit and nothing adds a watermark to the code you generate.

Do the tools upload my data to a server?

No. They run as a client-side workflow, so whatever you type or paste — URLs, content, markup — is processed in your own browser and never sent to a server. That keeps your data private and is the core difference from cloud SEO suites that require an account and upload your input.

Will these tools improve my Google rankings?

They produce correct, standards-compliant markup and surface issues that help search engines understand and display your pages — which supports ranking — but they don't directly change rankings. Tags and schema make you eligible and clearer; your content, links, and authority determine actual position. We're honest about that throughout.

Which tool generates meta tags?

Use the Meta Tag Generator for an all-in-one block (title, description, canonical, robots, Open Graph and Twitter together). For focused social cards, the Open Graph Generator and Twitter Card Generator; for the preferred URL, the Canonical Tag Generator; for languages, the Hreflang Tag Generator.

How do I add structured data (schema)?

Use the JSON-LD Schema Generator for many types, or the focused FAQ, HowTo, Breadcrumb, and Article schema generators. Paste the generated script block into your page, then check it with the Schema Markup Validator. Structured data helps both rich results and AI answer engines understand your content.

What are GEO and AEO, and which tools help?

GEO (Generative Engine Optimization) is optimizing for AI engines like Google AI Overviews, ChatGPT, and Perplexity; AEO (Answer Engine Optimization) is structuring content to be the cited answer. The llms.txt Generator, AI Crawler Control, and FAQ/HowTo schema generators target these directly, alongside clear, well-structured content.

Should I block or allow AI crawlers?

It's a strategic choice the AI Crawler Control tool helps with. Allow 'answering' crawlers (like PerplexityBot and OAI-SearchBot) if you want to appear and be cited in AI answers; consider blocking 'training' crawlers if you'd rather your content not feed model training. Blocking AI crawlers does not remove you from normal Google Search.

Do these tools check if I'll get a Google rich result?

They generate valid markup and the Schema Markup Validator checks its syntax and structure — but eligibility for a specific Google rich result is Google's decision, based on its policies and your content quality. For that final check, use Google's Rich Results Test; use our tools to create and pre-validate the markup quickly and privately.

Do I need to install anything?

No. There's nothing to download or install and no account to create. Open any tool page in a modern browser on a laptop, phone, or tablet and use it immediately. Because the tools run in the browser, they work the same across Windows, macOS, Linux, Android, and iOS.

Do the SEO tools work on mobile?

Yes. The tools are responsive and run in your phone's browser with no app to install, so you can generate or check markup on Android or iOS. Pasting longer HTML or code is easier on a desktop, but everyday tasks work fine on mobile.

Do the tools work offline?

Once a tool page has loaded, the processing happens on your device, so it keeps working without a connection — which is also why your input isn't uploaded. You only need to be online to open the page the first time; after that the tool runs locally.

Why are some SEO features in your other tool categories?

To avoid duplicate pages competing for the same searches. A URL slug generator and word-frequency counter live in Text Tools, and JSON formatting and regex testing in Developer Tools. The SEO hub links across to them rather than rebuilding them, keeping each tool a single authoritative page.

How do I find the right tool quickly?

Use the search box at the top to type what you want — like 'schema', 'robots', or 'meta' — or browse the categories on this page: Meta & social tags, Structured data, SERP & on-page, Crawl & technical, and GEO / AI era. Each tool's page explains exactly what it does and how to use it.

Still have questions?

If you can't find the answer you're looking for, feel free to contact our support team.

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