Browser Resource Hint Validator
Check preconnect and preload hints are working correctly
Browser Resource Hint Validator launched on March 8, 2022 with 64 votes, #819 of 3,153 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 4 years on.
What it does
Resource hints like preload and preconnect can make sites load faster, but can also hurt performance if used wrongly. This tool checks your site for common problems with them.
Check that dns-prefetch, preconnect, preload, and prefetch browser resource hints are working correctly on your website.
You are using an old browser that is not supported anymore. You can continue using the site, but some things might not work asfrom debugbear.com
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