JSON formatter
Paste JSON and print it with line breaks.
JSON to XML
Turn a JSON value into a simple XML tree.
XML to JSON
Turn an XML document into JSON.
JSON path finder
Read a dotted path such as plan or items[0].name.
JSON size
Count the bytes in pasted JSON, including whitespace.
HTML compare
Show lines that differ between two pasted blocks.
Keyword density
Count words in pasted copy. Nothing is uploaded.
MAC to IPv6 interface id
Build a modified EUI-64 identifier from a 48-bit MAC address.
MAC address notes
Say whether a MAC looks unicast or locally administered. No vendor list is shipped.
Social meta tags
Build title and description meta tags from text you type. The site does not post them anywhere.
Canonical tag checker
Find canonical link elements in pasted HTML.
Favicon checker
Find icon link elements in pasted HTML.
Sitemap checker
List loc entries in sitemap XML you paste. The page does not fetch URLs.
Link checker
Look at href values in pasted HTML for empty or script links. URLs are not requested.
DNS notes
Check that a hostname is well formed. This page is not a live resolver.
WHOIS helper
A local note about a domain. Registry data is not queried and is not invented.
Domain age
Calculate age from a creation date you already know. WHOIS is not queried.
IP notes
Say whether an address looks private or public. No city is attached.
What is my IP
This page cannot see your public address. Paste one if a router screen showed it to you.
ASN notes
Check that an AS number is well formed. No network owner is looked up.
SSL notes
A live certificate is not fetched. The page explains the hosting target instead.
SSL decoder
Inspect a PEM block you paste. Trust is not asserted.
Nameserver check
Compare pasted name servers with the sample names for this storefront.