What's the most frustrating part of using free webmaster tools today?

Hi Product Hunt community! 👋

I'm currently building Site Tools Box (launching here on Oct 20), and I'd love to get your thoughts before the big day.

My motivation was simple: I was tired of bouncing between websites that were either stuffed with ads, slow, or required me to create an account just to check a domain's DNS or HTTP status.

I built a free alternative with 20+ tools. No sign-ups, no ads, and most run client-side.

But I want to make sure I'm building things people actually need. So I have a question for the webmasters, developers, and SEO folks here:

What is the one webmaster tool you use every single day, but hate paying for (or hate the ads on)?

Let me know below! I'm trying to figure out what I should build next. 👇