Did you read the accompanying webpage with a small explanation?
encoded string: decode → ← encode decoded string:
This page was created by Jeroen Zomer, Middleware Specialist at Axxius BV (NL). Axxius has proven to be a solid partner for all kind of clients who need help with Middleware in all sorts and forms (but we are specialized in IBM WebSphere products). The IT specialists of Axxius are among the best in the Benelux, with a decent 15 year track record.