Skip to main content

Delta user experience (UX) analysis and prototype

April 20, 2020

Delta user experience (UX) analysis and prototype

Delta document management system is used by more than 20,000 users in about 100 public and private institutions. The Delta user experience analysis and the creation of user interface prototype, commissioned by the Center of Registers and Information Systems (RIK), are part of a project aimed at creating a more modern, reliable, sustainable and user-friendly Delta on a new platform and with an updated user interface.

 

Works done:

  • conduction of a survey of user needs and expectations covering all user groups,
  • process optimization,
  • a vision to automate processes, reuse data and improve usability,
  • prototype of the new Delta user interface (UX-UI),
  • usability tests using a prototype (UX),
  • information system brandbook,
  • development of Delta usability indicators,
  • creation of a system for measuring user satisfaction.

 

Technologies: BPMN, UML, Axure, Figma, W3C WCAG2.1 AA, Nuxeo

Latest Projects

Tallinna Linnatransport – Renewal of the Intranet and Public Website

Tallinna Linnatransport – Renewal of the Intranet and Public Website

August 19, 2025

Challenge
Tallinna Linnatransport (TLT) needed a complete overhaul of both its intranet and public website. The new solution had to be user-friendly, secure, accessible, and meet the needs of diverse target groups – from citizens to employees and business partners.

Solution
Krabu Grupp carried out a comprehensive renewal project which included:
• creating a new design framework in line with TLT’s brand guidelines;
• developing a user-centered Mega Menu and personalized homepage views for different user groups;
• adding modern features such as ID-card, Mobile-ID and Smart-ID login, dark mode, and dynamic submenus;
• ensuring mobile-friendly responsive design and multilingual support (Estonian, English, Russian);
• implementing accessibility improvements in line with international standards;
• optimizing site performance (lazy loading, CSS/JS minification, caching, server-side rendering) and strengthening security with a multi-layered protection system.

Result
The renewed website provides TLT with:
• significantly improved user experience across all devices,
• smooth and fast navigation through the Mega Menu and personalized views,
• secure and reliable access to internal information,
• better visibility in search engines thanks to technical optimization.

With the new solution, TLT can offer employees, customers, and partners a clear, trustworthy, and convenient digital channel that supports daily operations and strategic goals.

Moodle Platform Customization

Moodle Platform Customization

April 29, 2025

Challenge
A rapidly-growing private-sector company needed a simple, auditable way to prove that every employee had read and acknowledged mandatory internal documents.

Solution
Krabu Grupp extended the customer’s Moodle learning environment with a custom Document Sign-Off plugin. Once an employee finishes reading, they set the status to Done; the system instantly stores the user, timestamp and document version and feeds the data into a real-time compliance report.

What is Moodle?
Moodle is an open-source Learning Management System (LMS) used in more than 200 countries to build e-learning courses, manage content and track learner progress.

Impact
• 100 % visibility of employee acknowledgements
• Sign-off cycle shortened from days to minutes
• Automatic audit trail exports for HR and compliance teams