Free SEO tools
Three tools I use on my own projects, made available for free: a Chrome extension to audit any page without creating an account, a desktop crawler to walk an entire site up to 500 URLs, and what you need to hunt down broken links.
What you can do, for free
Each tool answers a specific need. The right choice mostly depends on scope: one page, or a whole site.
SEO extension for Chrome
The full audit of the page you are looking at, in the side panel: meta tags, Hn structure, images, structured data, Core Web Vitals. Free, no account, unlimited.
Broken link checker
Find the dead links on a page or across a whole site, with each one’s status and the page that contains it. Highlighted directly in the page.
On-page audit
The full checklist of what gets judged on a page: title measured in pixels, heading hierarchy, content, indexability, JSON-LD, performance.
Free SEO crawler
Walk a whole site the way Google does: errors, redirects, meta tags, internal linking, orphan pages, sitemap. Up to 500 URLs per site.
One page, or the whole site?
A single page
You open the page, the diagnosis appears. Ideal for checking a product page, an article, or a competitor’s page.
- No sign-up
- Immediate result
- Report copies as Markdown
A whole site
The crawler walks the pages one by one and reveals what never shows page by page: depth, orphan pages, duplication, sitemap gaps.
- Free account, no card
- Windows and Linux
- Report prioritised by impact
Frequently asked questions
Are these tools really free?
Where does the free tier stop?
Do you need technical skills?
Start with the page in front of you
The extension installs in seconds and asks for no account.