You know the drill. You need to check DNS propagation, format some JSON, or run a quick SEO audit on a site. You Google a free tool, click the first result, and immediately get hit with "create a free account to continue" — or the actually useful features are behind a paywall.
I got tired of that, so I built my own.
SiteIndex is 70+ free online tools with no signup and no paywall. Website auditing, network diagnostics, developer utilities, PDF tools — all running in the browser.
What's in there
Four categories:
Website & Domain — the flagship is Website Score: a full SEO, performance, security, and accessibility audit of any public site. You can also embed a live score widget on your own website.
Internet & Network — speed test, DNS lookup, propagation checker, port checker, ping, HTTP headers checker, SSL checker, and more.
Developer — JSON formatter, JWT decoder, regex tester, Base64, hash generator, cron job maker, UUID/ULID generators, and the rest of the daily-driver stuff.
Utilities — QR code generator, PDF merge/split, image tools, text manipulation, unit converters.
Why no signup?
Honestly, most of these tools have no business asking for your email. A JSON formatter doesn't need an account. Everything that can run client-side, does. No accounts to manage, no passwords to leak, no "free trial" that converts to a charge you forgot about.
Also: there's a Chrome extension now
Just published it — one click opens SiteIndex from your toolbar instead of digging through bookmarks.
Try it, break it
It's live at siteindex.app. I'd genuinely like to know:
- What's broken or slow?
- What tool is missing that you'd actually use?
Roast away in the comments — that's the fastest way to make it better.
Top comments (1)
I viewed this and honestly loved the idea—70+ free tools with no signup is a great way to remove friction. Thanks for sharing! I’ve been exploring SerpSpur for SEO work, especially when a website needs quick audits, technical checks, and visibility insights. It reminded me that useful tools don’t always need a complicated setup—sometimes solving one real problem quickly is what makes people come back.