Can it check relative links?

Only absolute http(s) href values are checked. Relative links need a base URL context this tool does not assume.

Cross-origin checks go through DevTools proxy with redirect: manual for safety.

Broken Link Checker

Extract absolute http(s) links from pasted HTML only

Paste a fragment or page source — client-side extraction only

0 unique link(s) found

Define mock REST routes and intercept fetch calls client-side

Estimate how long a file takes to transfer at a given connection speed — correctly handling bits vs bytes (Mbps vs MB/s) and SI vs binary size units

Convert cURL commands to code snippets in multiple languages. Parse cURL and generate JavaScript, Python, PHP, and more.

Query DNS records and resolve domain names to IP addresses

Compare DNS answers from global public resolvers and see propagation consensus instantly

Parse email message headers to trace routing and authentication