These tools let you check network settings, look up DNS records, calculate IP subnets, and read HAR files. If you are trying to figure out why a website is loading slowly or you need to manage an office network, these utilities will give you the exact technical details you need. Explore our 9 free tools below.
Look up what HTTP status codes mean. It is completely free and very easy to use.
Calculate IPv4 subnets and IP ranges. It is completely free and very easy to use.
Encode or decode your URLs safely. It is completely free and very easy to use.
Break down a URL to inspect its parts. It is completely free and very easy to use.
Turn cURL commands into Python, Node.js, or Go code.
Look up DNS records for any website. It is completely free and very easy to use.
View and analyze HAR files from your browser. It is completely free and very easy to use.
Look up device makers from MAC addresses. It is completely free and very easy to use.
Check your public IP address and internet speed. It is completely free and very easy to use.