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Free SEO tools

19 Free SEO Tools

No signup, no account required. Audit meta tags, robots.txt, sitemaps, links, and heading structure in seconds.

Content writing

Word Counter

Count words, characters, sentences, and estimated reading time as you type.

Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase, and more.

Keyword Density Checker

Check keyword density for a page or pasted text, with one, two, and three word phrase frequency.

Content Freshness Gap Finder

Fetch a sitemap and see which pages are fresh, aging, or stale, oldest first.

E-E-A-T Signal Checker

Check a page for named author, dates, citations, and organization identity signals.

On-page & meta tags

FAQ Schema Generator

Paste your FAQ or article text and get ready-to-use FAQPage JSON-LD schema instantly.

Slug Generator

Turn any title into a clean, URL-safe slug instantly.

Meta Tags Checker

Check a page's title, description, canonical URL, Open Graph, and Twitter Card tags for issues.

Hreflang Tag Checker

Check a page's hreflang tags for missing self-reference, duplicate codes, and non-reciprocal alternates.

Heading Structure (H1-H6) Checker

Check a page's full H1-H6 outline for missing or duplicate H1s, skipped levels, and empty headings.

Links & backlinks

Redirect Checker

Follow a URL's full redirect chain hop by hop, with status codes and warnings for loops and insecure hops.

Follow / Nofollow Link Checker

Check every link on a page and see which are follow, nofollow, sponsored, or ugc, split by internal and external.

Anchor Text Checker

Check every link on a page and see its anchor text distribution, with a warning when one phrase dominates.

Link Reciprocity Checker

Check whether two pages actually link to each other, in both directions, with follow/nofollow status.

Sitemap & robots.txt

Robots.txt Tester

Fetch and read any site's robots.txt, and check whether a specific URL is blocked for a given crawler.

XML Sitemap Validator

Fetch and validate any XML sitemap: malformed XML, invalid or duplicate URLs, and bad field values.

Sitemap vs. Robots.txt Conflict Checker

Find URLs listed in your sitemap that your own robots.txt then blocks.

Site detection

CMS Detector

Find out what any website is built with, and see the signals behind each result.

AI tools

AI Crawler Access Checker

Check whether GPTBot, ClaudeBot, PerplexityBot, and other AI crawlers can access your site, split by training, live-answer, and AI-search access.

Frequently asked questions

Yes. Every tool on this page is free to use, with no signup and no account required. We build them because they're useful on their own, and because some of you will want to try VellumUp's full AI writing platform afterward.
No login is required. Creating a free VellumUp account only matters if you want to generate full SEO articles automatically.
It depends on the tool. Word Counter, Case Converter, Slug Generator, and FAQ Schema Generator run entirely in your browser, so nothing you type ever leaves your device. The tools that check a URL, like Robots.txt Tester or Meta Tags Checker, fetch that page on our server rather than yours, since a browser cannot read another site's files directly. That fetched content is used to run the check and is not stored afterward.
Yes. Nineteen tools are live here now, across content writing, on-page and meta tags, links and backlinks, sitemap and robots.txt, site detection, and AI tools, and we intend to keep adding more over time.
Meta Tags Checker and Heading Structure Checker catch the most common on-page mistakes fastest. If you're auditing an existing site rather than a single page, Robots.txt Tester and XML Sitemap Validator are the two worth running first, since a blocked or broken one of those can quietly stop a search engine from indexing pages you actually want found.
No. Each one checks a single, specific thing well, the way a real crawler or a specific Search Console warning would, but a full audit also covers page speed, backlink quality, content depth, and more than any one focused tool can. These are built to answer a specific question fast, not to replace a complete site audit.

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