The Other Tools in This Family

Eleven small sites, one job each, built the same way: paste a URL or a file, get a report with the fix under every finding. No accounts, no limits worth mentioning, nothing to install. These are the other ten.

Each one runs from its own domain and keeps to its own subject, so a report never tries to sell you the next tool. When two of them overlap (a canonical tag shows up in the index checker and in the hreflang checker, a security header in both header tools) the overlap is deliberate: each site checks what it needs for its own verdict and links out for the rest.