J-AST Help

User accounts and administration

J-AST supports multiple users with different roles. This page explains registration, guest accounts, user settings, and administration.

User roles

User

A regular registered user. Can create and manage their own projects. There is no limit on the number of projects or images.

Guest

A limited user with restrictions on the number of projects, images, and account lifetime. Intended for trying out J-AST without a full registration.

Admin

An administrator. Has access to the admin panel for managing all users and can upgrade guest accounts to regular users.

Registration and login

If the server administrator has enabled self-registration, you can create an account by clicking the Register button in the top toolbar. You will need to provide:

  • First and last name

  • E-Mail address (used as your username)

  • Password (minimum 6 characters)

  • Affiliation (optional)

If self-registration is disabled, contact the server administrator to create an account for you.

To log in, click Login, enter your e-mail and password, and confirm.

Guest accounts

If enabled by the administrator, you can create a guest account instead of a regular account. Guest accounts have the following limitations (configurable by the administrator):

Project limit

Maximum number of projects a guest can create (default: 1).

Image limit

Maximum number of images per project (default: 10).

Account expiry

The account is automatically deactivated after a given time (default: 3 days / 4320 minutes). All data is deleted upon expiry.

An orange "Limited account" indicator with a countdown ring is shown in the top toolbar for guest accounts. Click it to view details about your limits and expiry.

Account settings

Click your username in the top toolbar and select Account to open the account settings page. Here you can:

  • Update your first name, last name, and affiliation

  • Change your password

  • View your user role and internal ID

Admin panel

Administrators can access the admin panel via the Admin button in the top toolbar. The admin panel provides:

  • A list of all registered users with their e-mail, role, and active status

  • The ability to add new users (with any role)

  • The ability to edit existing users — change name, e-mail, password, affiliation, role, and login permission

  • A list of each user's projects (clickable to open)

13 July 2026