All support
Web Tools support
Tips for the most common issues across the toolbox — link checker, GUID finder, color picker, CSS inspector, and more.
Troubleshooting
Frequently asked questions
Some servers block HEAD requests, return 403 to non-browser user agents, or rate-limit bursts. Try lowering the concurrency in the popup and increasing the timeout. False positives are listed at the bottom of the CSV export so you can re-check them manually.
Still stuck?
Contact us
Send a note with the URL of the page where the issue happens, your browser version, and which tool you were using. That gets us to a fix faster.