I. Intro

In Feishu Forms, you can add parameters to a form link to prefill default values for questions or to track submission sources.

II. Steps

On the Feishu forms, click Publish in the upper-right corner, and then copy the form link.

Add URL parameters to the form link.

Format: [Form sharing link]?prefill_ [Question]=[Prefilled value]

The question after prefill_ must be entered exactly as it is written in the form.

To prefill default values for multiple questions, use an ampersand (&) to connect them. For example: [Form sharing link]?prefill_Progress=In Progress&prefill_Date=2023/04/01

Question types that support default values: Multi-line text, single option, multiple options, rating, NPS, date, person, number.

Default value specifications

Field type
Specifications
Multi-line text, rating, NPS, number
Enter the text or number directly.
Rating and NPS default values must be within the range set by the question, otherwise the pre-filled content will not be available.
For example: [Form sharing link]?prefill_Number of members=3
Single option and multiple options
Enter the option directly. For multiple options fields, use a comma (,) to separate the options.
For example: [Form sharing link]?prefill_Tags=Function,Experience
Person
Enter the full name of a member that is one of your Feishu contacts. (If there are multiple people in the organization with the same name, it can't be prefilled.)
For multiple members, use a comma (,) to separate them. (If a field doesn't allow adding multiple members, only the first member will be prefilled.)
For example: [Form sharing link]?prefill_Project leader=Kato,Sophia
Date
Separate the year, month, and day with a slash (/): yyyy/mm/dd (for example, 2000/01/01)
When the prefill value contains year, month, day, and time, use a space to separate the date and time: yyyy/mm/dd hh:mm (for example, 2000/01/01 00:00)

To prefill default values that contain special characters, refer to the table below to convert them for the link.

Special character
Convert to the following before adding it to the link
Special character
Convert to the following before adding it to the link
Space
%20 or +
(
%28
;
%3B
)
%29
:
%3A
&
%26
[
%5B
$
%24
]
%5D
,
%2C
{
%7B
!
%21
}
%7D
@
%40
#
%23

Review the prefilled default values in the form

After the parameters are added, you can paste the link into any browser to check whether the default values have been entered correctly.

Note: The form link has a limit of 16,000 characters. If this limit is exceeded, the default values won't appear in the form. 

To share the form using a QR code, open the form sharing link with the pre-filled value parameters in a browser and click Share in the upper-right corner to get the QR code. 

Hide default value questions

To hide a question with default values from the form, add &hide_[Question]=1 to the form link. For example, to hide the project manager question, set the form link to: [Form sharing link]?prefill_project leader=Kato&hide_project leader=1.

You can use this method to track the source of responses:

For example, when collecting feedback about an event, you may want to analyze which channels the users are coming from.

Steps:

Add a question to the form: Source platform.

Click Publish, set who can fill out the form, and copy the sharing link.

Add a parameter to the form link. If the link comes from Feishu: [Form sharing link]?prefill_source platform=Feishu&hide_source platform=1.

Share these links on their respective platforms. The default value helps you track where the form was submitted from.

III. FAQs