Free SEO tools for your website
The small tools I use every day to check a page, prepare a text or write a snippet of code without mistakes. They are free, with no sign-up, and everything runs in your browser: nothing is sent to a server.
Analyse a page
On-page SEO checker
Paste the source code of a page: title, headings, images, links and structured data reviewed, with the fixes to make.
Open the tool
SERP simulator
Your title and meta description as Google shows them, on desktop and mobile, truncated to the pixel.
Open the tool
Robots.txt tester
Paste your file and your URLs: the tool applies Google's rules and tells you what is blocked, and by which line.
Open the toolWrite and format
Why these tools are free
I first wrote them for my own work as a consultant. Rather than keep them to myself, I put them online: they are useful, and they show in practice what I check when I look at a website.
Your data stays with you
Each tool runs entirely in your browser. The text, code or addresses you paste never leave your computer, are not stored and serve no purpose other than the result on screen. You can safely run a page that is not published yet.
When a tool is no longer enough
A tool answers one precise question. When the question becomes "why is my site not taking off", you need to look at the whole picture: technical SEO, content and links. That is what a full SEO audit is for.