RoborankWhy these are free
Every one of these started as something we needed while building Roborank. Checking whether a canonical was self-referencing, pulling a URL list out of a sitemap, generating schema without opening a spec. They were faster to build as small pages than to keep doing by hand, and there is no reason to keep them behind a login.
None of them ask for an email before showing you the result. The schema generators never send anything to a server at all, because there is no reason for them to. The tools that have to fetch a page do exactly that and nothing more.
What they do not do
These check one page, one file or one list at a time. That is genuinely useful when you have a specific question, and it is the wrong shape for running a site. Nobody is going to paste four hundred URLs into a canonical checker one at a time, and if they did they would then have four hundred findings and no way to act on them.
That is the part Roborank does. It connects to your CMS and your Search Console, crawls the whole site, ranks what is worth fixing by what it would actually be worth, writes the fix, and applies it. The free tools tell you what is wrong with a page. The product changes it.
Frequently asked questions
Are these tools really free?
Yes. No signup, no credit card, no email required to see a result. The tools that fetch a live page have a daily limit per visitor, which is there so they stay available rather than to push you towards a paid plan.
Do you store what I enter?
The schema generators run entirely in your browser, so nothing you type ever reaches us. The tools that fetch a page log the URL for rate limiting and nothing else.
Do I need an account?
No. None of the tools on this page require one.
Can I use these for client sites?
Yes, for your own sites, client sites, or competitor research. There is nothing to attribute and nothing to ask about.
What is the difference between these and Roborank?
These answer a question about one page. Roborank connects to your CMS and Search Console, works across the whole site, decides what is worth fixing first, and makes the change for you.