File field
Category: Field
Version: 1.0
Last Updated: February 25, 2026
Author: Any2Info
Description
The File field allows form users to upload a file. What kind can be set by the Forms creator through a property.
General Properties
The File field inherits general Field Properties such as ‘Font size’, ‘Font color’ and ‘Icon color’.
Special Properties
The File field has a few special properties unique to it. These include:
Pick file
string
The text displayed when no file has been picked yet
Picked file
string
The text displayed when a file has been picked
Allowed files
List of MimeTypes
A list of MimeTypes that can be freely filled in.
By default this allows all files to be uploaded.
Maximum size
int (0-25)
Size in MB that the file is allowed to be
Tips & Best Practices
Be precise when adding Mime Types to the Allowed Files property, mime types can get rather specific. And a wrong type means some files might not be allowed for uploading. Use Google or any other search engine to determine what mime type fits your needs the best.
Set a proper Maximum Size based on the use case. Uploading multiple large files will slow down the app.
Errors
Error Message
Meaning
Solution
Media size cannot be more than {maximum size}MB
The file selected to upload exceeds the Maximum Size set
Either make the allowed file size bigger or instruct the user to upload smaller files
This type of media is not allowed
The file selected to upload is not of an accepted type
Instruct the user to upload a specific type of file
Examples
Below is a File field with the default properties set. When a user clicks on the field a popup will be shown, allowing the user to select a file to upload.
Below is the File field when a file has been uploaded.
Downloading and removing a file can be done through the icons on the top right.
Changelog
Version
Date
Change
1.0
February 25, 2026
Initial document & documentation
Last updated
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