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Documentation Index

Fetch the complete documentation index at: https://docs.landerlab.io/llms.txt

Use this file to discover all available pages before exploring further.

The File Upload block lets you collect files from users directly inside a quiz funnel step. You can drop it into any step, configure which file types are accepted, set how many files users can upload, and make the upload required before they can proceed.

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What Is the File Upload Block?

The File Upload block is a quiz block you add to a step in your funnel. When a user reaches that step, they see a drag-and-drop upload area where they can submit one or more files. It is useful when you need supporting documents, images, or media from a lead as part of your qualification flow. For example: proof of identity, a portfolio file, a contract, or a photo of a product issue.

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How to Add the File Upload Block to a Step

1

Open your quiz funnel

Navigate to the quiz funnel you want to edit in LanderLab.
2

Go to the right step

Open the step where you want to collect files, or create a new step.
3

Add the block

Click Add Block inside that step and select Upload from the block list.
4

Configure

The block is added to your step. Click it to open the settings panel and configure it.

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Block Settings

Once the Upload block is on your step, click it to open its settings panel on the left.

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General

FieldWhat It Does
NameInternal identifier for the block. Used in lead data and quiz logic references.
LabelThe small label shown above the upload area on the published step.
TitleThe main prompt shown inside the upload zone (e.g., “Drop your file here or click”).
DescriptionSupporting text shown below the title inside the upload zone (e.g., “Accepts png, jpeg, pdf”).

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Settings

FieldWhat It Does
Min FilesThe minimum number of files the user must upload. Default is 1.
Max FilesThe maximum number of files allowed.
Allow TypesThe file formats accepted. You can select multiple types from the dropdown.

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Accepted File Types

You can allow any combination of the following formats:
JPEG, PNG, WebP, GIF, SVG, HEIC
PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX, CSV, TXT
MP4, MOV, WebM
The total size of files uploaded must not exceed 30 MB per submission

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Validation

Under the Validations section, you can turn on the Required toggle. When enabled, the user cannot move to the next step until they have uploaded at least the minimum number of files. You can also set a custom Error Message that displays if the user tries to proceed without uploading.

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Other Configuration Options

The Upload block also supports the same standard block options available to other quiz blocks:
SectionWhat It Controls
SpacingAdjust padding and margins.
AppearanceControl the visual look of the block.
VisibilityShow or hide the block based on conditions.

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How It Looks to the User

When a user reaches the step, they see a clearly labeled upload zone with the title and description you configured. They can drag and drop files directly into the area, or click to browse and select files from their device.

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Tips

Keep the Description field clear about what formats and sizes are accepted. This reduces user confusion and failed submissions.
If you only need one file, set both Min Files and Max Files to 1 to simplify the experience.
Use the Required toggle when the file is essential for lead qualification. Leave it off if uploading is optional.
The Name field value becomes the key in your lead data. Give it a clear name like portfolio_upload or id_document so it is easy to identify in your leads dashboard.

Managing Steps

Learn how to add, reorder, and manage steps in your quiz funnel.

Quiz Blocks

Explore all available blocks you can add to a quiz step.

Validation

Understand how to set rules that control when users can proceed.

Conditions

Use conditional logic to show or hide blocks based on user input.