---
title: "Free SEO Tools: Robots.txt, Sitemap, Schema, Hreflang & More"
description: "Free technical SEO tools from bseoa: robots.txt tester, XML sitemap checker, schema markup validator, hreflang and canonical checkers, and a title and meta length checker."
image: "https://www.blackseoanalyzer.com/static/images/black-seo-analyzer-og-image.png"
canonical: "https://www.blackseoanalyzer.com/en/tools"
language: "en"
---

# Free SEO Tools

Single-purpose technical SEO checks. No signup. Each one looks at one URL or one file and tells you exactly what's wrong and why.

## [Title & Meta Description Length Checker](https://www.blackseoanalyzer.com/en/tools/meta-description-length-checker)

Type or paste a title and meta description and see, as you type, whether Google or Bing will cut them off, measured in pixels rather than characters.

## [Robots.txt Tester](https://www.blackseoanalyzer.com/en/tools/robots-txt-tester)

Test whether a URL is allowed or blocked for Googlebot, Bingbot, GPTBot or any user agent, and see the exact rule that decided it.

## [XML Sitemap Checker](https://www.blackseoanalyzer.com/en/tools/xml-sitemap-checker)

Find a site's sitemap from its domain, then validate the XML, the URLs in it, lastmod dates and sitemap index files.

## [Schema Markup Validator](https://www.blackseoanalyzer.com/en/tools/schema-markup-validator)

Paste JSON-LD or enter a URL. Get JSON syntax errors with line numbers and a check of the properties Google requires for rich results.

## [Hreflang Checker](https://www.blackseoanalyzer.com/en/tools/hreflang-checker)

Validate a page's hreflang annotations, then fetch each alternate to confirm it links back, returns 200 and isn't canonicalized elsewhere.

## [Canonical Tag Checker](https://www.blackseoanalyzer.com/en/tools/canonical-tag-checker)

See which URL a page declares as canonical, in HTML or HTTP headers, and whether that target actually resolves to an indexable page.

## [Quick SEO Check](https://www.blackseoanalyzer.com/en/quick-seo-check)

One-page check of title and description truncation, canonical, noindex, Open Graph tags and basic accessibility signals.

## Need these checks on every page?

bseoa is a desktop crawler for Windows, macOS and Linux. It runs these checks and 300+ more across your whole site, with a GUI and a CLI. $279 once, no subscription.

[Try it free for 14 days](https://www.blackseoanalyzer.com/en/free-trial)

```json
{"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://www.blackseoanalyzer.com/#organization","name":"Fiscus Technology, LLC","url":"https://www.blackseoanalyzer.com/","logo":"https://www.blackseoanalyzer.com/static/images/black-seo-analyzer.png","sameAs":["https://github.com/sethblack/black-seo-analyzer","https://www.youtube.com/@SethBlack","https://linkedin.com/in/seth-black-tx"],"founder":{"@type":"Person","@id":"https://www.blackseoanalyzer.com/#seth","name":"Seth Black","url":"https://www.blackseoanalyzer.com/about"}},{"@type":"WebSite","@id":"https://www.blackseoanalyzer.com/#website","name":"bseoa","url":"https://www.blackseoanalyzer.com/","publisher":{"@id":"https://www.blackseoanalyzer.com/#organization"}},{"@type":"WebPage","@id":"https://www.blackseoanalyzer.com/en/tools","url":"https://www.blackseoanalyzer.com/en/tools","name":"Free SEO Tools: Robots.txt, Sitemap, Schema, Hreflang & More","description":"Free technical SEO tools from bseoa: robots.txt tester, XML sitemap checker, schema markup validator, hreflang and canonical checkers, and a title and meta length checker.","inLanguage":"en-US","isPartOf":{"@id":"https://www.blackseoanalyzer.com/#website"}},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.blackseoanalyzer.com/"},{"@type":"ListItem","position":2,"name":"Free SEO Tools: Robots.txt, Sitemap, Schema, Hreflang & More","item":"https://www.blackseoanalyzer.com/en/tools"}]}]}
```