Nielsen's Heuristics

Nielsen's heuristics are 10 general usability principles used to check how clear and easy to use an interface is. They were formulated by Jakob Nielsen in 1994, building on the heuristic evaluation method he developed with Rolf Molich in 1990. The heuristics do not provide ready-made solutions; instead, they help you quickly find an interface's weak spots without user testing.

Nielsen's 10 heuristics:

1. Visibility of system status.
2. Match between the system and the real world.
3. User control and freedom.
4. Consistency and standards.
5. Error prevention.
6. Recognition rather than recall.
7. Flexibility and efficiency of use.
8. Aesthetic and minimalist design.
9. Help users recognize, diagnose and recover from errors.
10. Help and documentation.

At SimpleOne, we follow these principles when designing the platform's interface and when auditing finished solutions. Below is how each heuristic works in practice.

Remember that heuristics are broad rules of thumb, not specific usability guidelines. When looking at any given issue, always also take into account:

1. the design system,
2. the specific user scenario,
3. development constraints.

Here is how our UX designers apply Nielsen's 10 heuristics when working on the SimpleOne platform:

1. Visibility of system status

The interface should keep users informed about the state of the system. However, too many signals create information noise. Signals need to be graded by how much they matter to the user: the most critical errors should stand out the most visually, while routine messages (such as confirmation that an operation succeeded) should be less prominent on screen. This heuristic also covers familiar things like highlighting in navigation (showing which section you are in), the focus state of an input field (signaling that you can start typing) and a loader during loading (showing that the process has started).

2. Match between the system and the real world

In the SimpleOne business process automation platform, we aim to make everything clear enough that not only a system administrator but also, say, an accountant can find their way around. In specialized interfaces we allow complex technical terminology, but we always add a tooltip so that a less experienced developer does not have to keep referring to the documentation. For elements common to any software (such as drag-and-drop areas, icons and scrollbars), we follow established component design conventions: a drag-and-drop area must be marked, icons must be labeled (for example, with a hover tooltip), and a scrollbar must look like a scrollbar.

3. User control and freedom

Users should know what they can do in the system and what their actions will lead to. This prevents fear of interacting with the software and frustration when mistakes happen. If an action cannot be undone, we warn the user and give them a chance to think again. In our interface design, we make sure users understand how to "exit" a scenario or "go back" to where they were. For this we use a close (X) icon, a Cancel button, a back arrow and breadcrumbs.

4. Consistency and standards

The less users have to learn when interacting with an interface, the faster and better they work with the system. To reduce cognitive load, we first adopt interface patterns our audience already knows, and second, we use the same element conventions throughout SimpleOne. For example, a chevron icon always indicates nesting. Clicking the element reveals additional information: an activity feed expands, menu sub-items appear or previously hidden text is shown.

5. Error prevention

To minimize user errors, we add tooltips to buttons, fields and forms. We explain how to interact with each element. We warn users about the consequences of critical actions with a confirmation dialog.