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PREVENT FILE UPLOAD
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Prevent File Upload

Published April 2025
   •    Updated December 2025

Plugin details

🛑 Prevent File Upload – Full Control Over File Uploads in Bubble
Take control of your app’s file and image upload process with the Prevent File Upload plugin. By default, Bubble’s File Uploader and Picture Uploader elements begin uploading files immediately upon selection—this plugin puts the power back in your hands.

With Prevent File Upload, uploads are paused at the moment of file selection. Instead of immediately sending data to your server, the plugin captures file information (such as file name, size, and type) and makes it available to your app’s workflows. From there, you (or your app’s logic) can decide whether to proceed with the upload.

You can then trigger the upload manually using the Start File Upload action—only when you’re ready.

🔑 Key Features:
  • Intercept Uploads: Prevent files from uploading right away.
  • Access File Metadata: Get file name, size, and type before anything is uploaded.
  • Approve or Reject Uploads: Build workflows that vet files based on custom rules.
  • Manual Upload Trigger: Use the “Start File Upload” action to proceed only when approved.
  • Enhanced Security & Control: Protect your app from unwanted or suspicious files.

🧰 Perfect For:
  • Moderated platforms (e.g., marketplaces, forums)
  • Apps with file size/type restrictions
  • Conditional access (e.g., premium users only)
  • Security-conscious applications

🔗 Live Demo Page
🛠️ Editor View (Demo App)

$10

One time  •  Or  $3/mo

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3 installs  
This plugin does not collect or track your personal data.

Platform

Web

Contributor details

free Codex logo
free Codex
Joined 2023   •   11 Plugins
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Instructions

📌 How to Use the Prevent File Upload Plugin
Follow these simple steps to set up the plugin in your Bubble app:

1. Give Your Uploader an ID  
Assign a unique ID Attribute to your File Uploader or Picture Uploader element.  
(You can enable the ID Attribute field in Bubble by going to Settings → General → "Expose the option to add an ID attribute...")

2. Drag the Plugin Element onto the Page  
Find the Prevent File Upload element in the Elements panel and drag it onto your page. It can be placed anywhere.

3. Link the Uploader to the Plugin  
In the plugin element’s properties, set the Uploader Element ID field to match the ID you gave your File or Picture Uploader.

4. Done!  
The uploader will now no longer upload files automatically upon selection.

5. Start Upload When You’re Ready  
To allow the file to upload, simply call the “Start File Upload” action in your workflow and pass in the same ID.  
This gives you the chance to review the file data and decide whether to proceed.

✅ Tip: Use the file metadata exposed by the uploader (like file name, size, and type) to build approval conditions before calling the upload.

Types

This plugin can be found under the following types:
Element   •   Event   •   Action

Categories

This plugin can be found under the following categories:
Image   •   Media   •   Productivity   •   Video   •   Data (things)   •   Visual Elements

Resources

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