Demonstration data stays local.
The JSON demo and transfer calculator run in the browser and do not send entered values to a server.
Controller
The controller is SGLASSSERVICE - 016 DOO, computer programming branch. Contact dimitrije@svilenkovicdev.com with data questions.
Contact form
The form stores your name, message, at least one contact method, subject and source page to reply.
Server copy retention
The server copy of a contact enquiry is kept for up to 90 days after the notification is handed to the mail system, or up to 180 days from receipt if the notification is not handed off. Business correspondence and backups have separate retention periods.
Demonstration tools
JSON and calculator values are processed only in your browser. Do not enter secrets, production tokens or real personal information.
Infrastructure and rights
The website uses Hetzner infrastructure in Germany. You may request access, correction or deletion subject to applicable obligations. Updated 29 September 2026.