About this tool
Check a whole list at once: each line is detected or checked as email, URL, IPv4/IPv6, UUID, MAC address or domain, with the reason when it fails.
Each value is checked against the syntax rules of its standard (email length limits and labels, URL parser, dotted IPv4 without leading zeros, IPv6 compression, UUID version and variant bits, MAC formats, domain label rules). IP addresses also show their range (private, loopback, public…).
Example: “ana@example.com” is a valid email; “10.0.0.300” is not a valid IPv4 address.
A valid format does not mean the mailbox, website or device exists — nothing is contacted.
Quick steps
- Paste your text or open a file (or press Try an example).
- Choose the options — the result updates as you type.
- Copy the result or download it as a file.
Everything runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Validate Email, URL, IP, UUID, MAC & Domain work?
Each value is checked against the syntax rules of its standard (email length limits and labels, URL parser, dotted IPv4 without leading zeros, IPv6 compression, UUID version and variant bits, MAC formats, domain label rules). IP addresses also show their range (private, loopback, public…).
What should I keep in mind?
A valid format does not mean the mailbox, website or device exists — nothing is contacted.
Is my text uploaded or saved?
No. It is processed on your device in a separate background task that is stopped if it takes too long; nothing is stored or sent.