---
title: "Free SEO, AEO & Documentation Tools | usedocs"
description: "Free SEO, AEO, and documentation tools: sitemap checker, broken link checker, FAQ and schema generators, robots.txt, llms.txt, token costs, and more."
image: "https://usedocs.app/og.png"
url: "https://usedocs.app/tools/"
---

Free · No signup

# Free SEO & documentation tools

Audit docs coverage, generate FAQs, validate sitemaps, and more — powered by the same crawler usedocs uses for support bots.

Start here

## Most used

					     AEO

### llms.txt Generator

Build an llms.txt file for AI discoverability from your site structure.

					     AEO

### AI Readiness Checker

Check if ChatGPT, Claude, and Perplexity can find and cite your site.

					     Docs

### Documentation Gap Analysis

Find questions your docs can't answer yet. See coverage before you embed a bot.

Library

## All tools

				      Flagship

### Document Chat

Upload a PDF or DOCX and ask it anything. A live demo of cited, grounded answers.

				      Flagship

### Documentation Gap Analysis

Find questions your docs can't answer yet. See coverage % before you embed a bot.

				      AEO

### AI Readiness Checker

Check if ChatGPT, Claude, and Perplexity can find and cite your site.

				      SEO

### FAQ Generator

Generate FAQ copy and FAQPage JSON-LD from any URL.

				      SEO

### FAQ Schema Generator

Build valid JSON-LD for FAQ, Article, Organization, and Product.

				      SEO

### Meta Tag Generator

Generate meta, Open Graph, and Twitter tags with a live preview.

				      SEO

### robots.txt Generator & Tester

Build and test robots.txt with explicit AI crawler rules.

				      SEO

### Sitemap Checker & Finder

Discover and validate XML sitemaps from robots.txt and common paths.

				      AEO

### llms.txt Generator

Build an llms.txt file for AI discoverability from your site structure.

				      SEO

### Broken Link Checker

Scan a page for dead links and 404s before readers hit them.

				      Dev

### Token Calculator

Estimate tokens and project monthly LLM API cost.

				      Business

### AI Support ROI Calculator

Estimate deflection savings vs chatbot plan cost.

				      Dev

### OpenAPI Validator

Paste OpenAPI 3 JSON and check structure before you publish API docs.

				      Business

### Docs Debt Quiz

Score freshness, ownership, gaps, and AI readiness in five questions.

Read next

## Popular guides

### AI support

Pair these tools with the [AI support chatbot](/learn/ai-support-chatbot) and [citations](/learn/ai-customer-support-with-citations) guides.

### Docs quality

Use [docs gap analysis](/learn/docs-gap-analysis) after you run the gap audit.

### AI visibility

Follow the [llms.txt guide](/learn/llms-txt-guide) after you generate a file.

### Study

See the [llms.txt adoption framework](/blog/llms-txt-adoption-saas-docs-2026).

Need help?

Email [hello@usedocs.app](mailto:hello@usedocs.app) for product questions, setup help, sales, partnerships, or security reports.

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```