Catalog

Asia/Tokyo clock

Current local time in Asia/Tokyo.

Asia/Shanghai clock

Current local time in Asia/Shanghai.

America/New_York clock

Current local time in America/New_York.

America/Los_Angeles clock

Current local time in America/Los_Angeles.

Timezone Clock

Current time in a named IANA timezone.

Slug character check

SHA-256, input discarded

SemVer numbers only

Robots Inspect

Fetch a public robots.txt and return group counts only.

16 random hex chars

RFC 3339 UTC stamp

Punycode host check

Port 443

Whether 443 is a common TCP/UDP port.

Nano ID shape check

E.164 shape, number discarded

application/json marker

Leap year check

Language en

ISO 639 language tag en.

Kilometers to miles

JWT header shape, payload discarded

JSON validity

JSON Check

Check whether text is valid JSON

ISO week number

ISO ordinal day