Online string encryption (DM5/SHA), online encryption of strings; encrypt strings using algorithms such as MD5, SHA1, SHA224, SHA256, SHA384, SHA512, Hmac-MD5, Hmac-SHA1.
Online UNIX timestamp, get the current UNIX timestamp (10 digits), convert a standard time string to milliseconds
Online URL encoding/decoding tool: convert website URLs and URL-encoded strings (UrlEncode) back and forth.
Online JSON formatting (and compression) tool that can format a given JSON string; the formatted JSON is easier to read and analyze, and it also supports JSON filtering and querying.