> 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/preview-testing/pref-filled-answers.md).

# Pref-filled answers

## 👀 What are pre-filled answers ?

Pre-filled answers allows you to create a [deployment link URL](/form-management/publish-deploy.md) that will pre-fill your survey with specific values. Once you share this link with your respondents ngSurvey will pre-fill the survey with the values that have been set in this link to select questions or fill fields. 

You may  either create manually pre-filled links or you can use the [preview / testing](/form-management/form-designer/preview-testing.md) center to generate the link dynamically while you fill out the test survey.

{% hint style="info" %}
You may also set the default text value on your [answer properties](/form-management/form-designer/answers/answer-properties.md) to set a default text that will fill your fields on the first time your respondents take the surveys.
{% endhint %}

## 🔗 Dynamic generation

To generate dynamically the link while you select the answers make sure to enable the generate **pre-filled answers url** property of the [preview / test center](/form-management/form-designer/preview-testing.md). Once its enabled you will be able to see and copy the pre-filled link from the preview navigation toolbar.

![](/files/-MBs71aVWv0Jng3LCT9Q)

ngSurvey will automatically build the link based on your actual test survey selections and entries.

##   ✍️ Manual generation

Advanced users may use the [web link](/form-management/publish-deploy/web.md) and append manually the values that should be used to pre-fill the survey. 

Values should be added as a querystring name / value pair with following format 

a\_fieldansweridtofill=yourvalue\
q\_questiontoselect=answeridtoselectforthatquestion

In the sample below ngSurvey would  

1.  fill the survey answer field having an id of MBs6BnWERPH69EIEZiba with a value John.
2. select the question with id MBs63pNZnnxG7ctdYfIa with the answer having an id of MBs63pNZnnxG7ctdYfJa 

```
https://www.ngsurvey.com/s/M6duyo80Qkfd1Eh7Vyna?a_MBs6BnWERPH69EIEZiba=John&q_MBs63pNZnnxG7ctdYfIa=MBs63pNZnnxG7ctdYfJa
```

 You may find the answer id in the browser URL when you edit the [answer properties](/form-management/form-designer/answers/answer-properties.md)

![](/files/-MBs9JBd-WrFThF8boT2)

The question id can also be found in the browser url when you edit the [question properties](/form-management/form-designer/questions/question-properties.md).

![](/files/-MBsALMUC3dI8aL4RU6d)


---

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