> For the complete documentation index, see [llms.txt](https://docs.ngsurvey.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ngsurvey.com/form-management/form-designer/condition-rules.md).

# Conditions

## 👨‍💻️️ What are conditions ?

The ngSurvey condition engine can trigger specific actions based on the results of one or multiple [condition groups](/form-management/form-designer/condition-rules/condition-groups.md) that are evaluated while running the survey based on the respondent answers using [condition rules](/form-management/form-designer/condition-rules/conditions-rules.md). 

Conditions can be used in following features.

* [Page branching](/form-management/form-designer/pages/branching.md)
* [URL  redirection](/form-management/form-designer/pages/thanks-end-page/redirection-condition.md)
* [Report filtering](/form-management/reports/filters.md)
* [Question skip / hide Logic](/form-management/form-designer/questions/question-properties/skip-hide-logic.md)
* [Answer skip logic conditions](/form-management/form-designer/answers/answer-properties/skip-hide-logic.md)
* [Panel views](/panels/panel-views.md)
* [Tasks triggers](/form-management/tasks/triggers.md)

{% hint style="info" %}
Using conditions you can for example show or [hide a question](/form-management/form-designer/questions/question-properties/skip-hide-logic.md) based on respondent answers, define triggers for your [completion](/form-management/tasks/task-items/completion-alert.md) [alerts](/form-management/tasks/task-items/completion-alert.md) or [skip some pages](/form-management/form-designer/pages/branching.md) that don't meet respondents criterias. 
{% endhint %}


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