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19 free tools you can use to investigate a URL

Tools and techniques for digging into links, redirects, parameters, and more.

Craig Silverman
Craig Silverman

Apr 27, 2026

19 free tools you can use to investigate a URL

You've got a URL. Now what?

Maybe you were sent it by a source or the target of an investigation. It could be a link from a dodgy ad that sends you through multiple redirects. Maybe it's a short link from a service like Bitly or TinyURL. Or a specific page on a website.

Investigations often focus on the page, app or other destination that the URL takes you to. But a link can also provide useful information even before you click.

This guide provides investigators with a range of free (and a couple of paid) tools and approaches you can use to investigate and otherwise learn more about a link or URL. To be clear, this isn’t a guide to investigating a domain name. The tools and approaches enable you to learn more about a URL for a specific page (or that redirects you to a webpage).

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