How to Accept PDF Uploads from Customers on the Checkout Page

1. Why Letting Customers Upload Files at Checkout Matters
2. What You'll Need
3. Quick Answer
4. How to Accept PDF Uploads on the PrestaShop Checkout Page?
5. Method 1: PrestaShop Upload File | Virtual File Manager for Customer File Upload
6. Other PrestaShop Modules That Can Also Do This
7. Method 2: Manual File Upload via Template Override
8. Why Use a Module Instead of Custom Code?
9. Troubleshooting Common Checkout Upload Problems
10. Best Practices for Checkout File Uploads
11. Conclusion

Why Letting Customers Upload Files at Checkout Matters

When customers can attach files during checkout, you remove a costly back-and-forth. Instead of asking for artwork, signed contracts, or custom dimensions over email, you collect everything in one structured place: the order itself. That means fewer support tickets, faster order fulfilment, and no more hunting through inbox threads to pair a file with a customer.

For stores selling personalised products, print services, or made-to-order goods, the checkout upload field is not a luxury. It is the difference between a smooth purchase and an abandoned cart. Customers appreciate a clear path to submit their requirements, and your team gets a complete order record the moment payment lands.

What You'll Need

• Administrator access to your PrestaShop back office (required to install and configure modules)
• A PrestaShop store (check your module compatibility before purchasing)
• The PrestaShop Upload File module installed, or a comparable file upload module from the PrestaShop Addons marketplace
• Some time for installation, configuration, and testing
• Difficulty level: beginner. No coding skills required for the plugin-based method

Quick Answer

You can accept PDF uploads in PrestaShop by installing a dedicated file upload module, placing the upload field on the product, cart, or checkout page, then setting file-type restrictions and size limits. The FME File Upload module handles all of this without custom code, and it lets you review every uploaded file from your back office.

How to Accept PDF Uploads on the PrestaShop Checkout Page?

You have two routes: install a purpose-built module, or override core template files with custom code. The module route is faster, more reliable, and easier to maintain across PrestaShop updates. The manual route gives you full control but requires developer skills.

Method 1: PrestaShop Upload File | Virtual File Manager for Customer File Upload

This module is the most direct way to add file upload capability to your checkout workflow. It lets customers attach files from the product page, the cart page, or the order page, so you choose exactly where the upload field appears. The module supports drag-and-drop and multiple file uploads, which keeps the checkout experience frictionless even when customers need to send several documents.

From the admin side, you manage all uploaded files from a dedicated dashboard. You can view, download, or delete files without leaving the back office, and each file is tied to its order for easy reference.

Step 1: Install the Module

You need the module installed before you can configure anything, so this step comes first.

Navigate to: PrestaShop back office → Modules → Module Manager

1. Upload the module: click the "Upload a module" button at the top of the Module Manager page, then select the ZIP file you downloaded from FME Modules
2. Confirm installation: PrestaShop will install the module automatically and display a success message
3. Locate the module: search for "Upload File" in the Module Manager search bar to confirm it appears in your installed modules list

You should now see the PrestaShop Upload File module listed under your installed modules, ready to configure.

Step 2: Configure Basic Upload Settings

Configuration determines what types of files you accept and how large they can be, which protects your server and keeps customer expectations clear.

Navigate to: Modules → Module Manager → PrestaShop Upload File → Configure

1. Allowed file types: enter the extensions you want to accept, for example pdf, jpg, png, docx. Separate each extension with a comma
2. Maximum file size: set the size limit in megabytes. A 5-10 MB limit works well for most PDFs and images
3. Maximum number of files: choose how many files a customer can attach to a single order or product
4. Upload field location: select where the upload field appears, such as the product page, cart page, or checkout page. You can enable all three if you want

You should now see your upload field appear in the selected location on the front of your store.

Tip: Set your allowed file types before telling customers about the upload feature. If you forget to add "pdf" to the list, customers will see an error when they try to attach their document.

Step 3: Enable the Upload Field on the Checkout Page

The module places the upload field where you specify, but you need to verify it actually shows on your checkout page rather than just the product page.

Navigate to: Modules → Module Manager → PrestaShop Upload File → Configure → Display Settings

1. Checkout page checkbox: make sure the option for the order or checkout page is ticked
2. Cart page checkbox: decide whether you also want the field visible earlier in the funnel, for example when the customer views their basket
3. Save configuration: click the Save button to apply your changes

You should now see the file upload field on your checkout page, ready for customers to attach their PDF before completing the purchase.

If you also want to make the upload mandatory before a customer can proceed, the Prestashop Mandatory File Upload module extends this behaviour so the order cannot be completed without an attached file.

Step 4: Test the Upload Process

Testing catches configuration mistakes before real customers hit them, so never skip this step.

Navigate to: your storefront → add a product to cart → go to checkout

1. Prepare a test file: create a small PDF file on your computer
2. Upload the file: drag it into the upload field, or click the field and select the file from your computer
3. Complete a test order: use your payment gateway's test mode, or choose a payment method that does not charge, to finish the checkout
4. Check the back office: go to the module's dashboard and confirm the uploaded file is linked to your test order

You should now have a completed test order with a PDF attached, which proves your checkout upload workflow is working.

Step 5: Manage Uploaded Files from the Dashboard

You will need to review or download customer files as orders come in, so knowing where to find them matters.

Navigate to: PrestaShop back office → Modules → Module Manager → PrestaShop Upload File → Uploaded Files

1. Review files: scan the list of uploaded files, filtering by date or order number if the module offers that option
2. Download a file: click the download icon next to any file to save it to your computer
3. Delete unwanted files: remove test uploads or files from abandoned orders to keep your storage clean

You should now be able to locate and download any customer file directly from the module dashboard without digging through email.

Other PrestaShop Modules That Can Also Do This

Several other modules offer file upload functionality if you want to compare options before committing. These are reliable alternatives available on the PrestaShop Addons marketplace.

If your primary need is collecting files from customers before payment, Prestashop Product Images by Customers works well for image submissions, while Private Download Area for Authorized Customers suits stores that need to deliver files post-purchase rather than collect them.

Method 2: Manual File Upload via Template Override

If you prefer not to use a module, you can add a file upload field to your checkout page by overriding PrestaShop's template files. This approach requires PHP knowledge and a willingness to maintain custom code across PrestaShop updates.

Step 1: Create an Override for the Order Controller

You need a hook into the order creation process so the uploaded file is saved and linked to the order.

Navigate to: /override/classes/controller/ in your PrestaShop installation

1. Create the override file: add a new file called FrontController.php in the override directory
2. Register a hook: use the hookDisplayCheckoutSummaryTop or a similar hook to render your upload field
3. Handle the file upload: write a PHP method that processes the uploaded file, validates its extension and size, and saves it to a secure directory
4. Link to the order: save the file path in the database so you can retrieve it after the order is placed

You should now have an override that renders the upload field and saves the file, although this is the most basic version of the solution.

Step 2: Add the Upload Field to the Checkout Template

The template needs a form field that customers can interact with, so you must modify the checkout template file.

Navigate to: /themes/your-theme/templates/checkout/

1. Locate the right template: open the file that renders the checkout summary or order confirmation page
2. Insert the HTML field: add an input element with type="file", giving it a unique name attribute so your controller can read it
3. Test the rendering: reload the checkout page and confirm the upload field appears in the correct position

You should now see the file input on your checkout page, though the backend processing still requires a working controller method.

Why Use a Module Instead of Custom Code?

A module handles the difficult parts of file uploads automatically: validation, security, storage, and admin management. Custom code requires you to maintain that logic yourself, and PrestaShop updates can break your overrides without warning.

• Modules receive updates when PrestaShop releases new versions, keeping your upload system compatible
• Modules include the admin interface for viewing and downloading files, which you would have to build from scratch
• Modules handle edge cases like file size limits, extension filtering, and error messages that customers see when uploads fail
• Modules are tested across common PrestaShop configurations, reducing the risk of unexpected errors

Troubleshooting Common Checkout Upload Problems

Even with a reliable module, you may run into issues. This section covers the most common problems PrestaShop merchants face when setting up file uploads at checkout.

Upload Field Does Not Appear on the Checkout Page

If the field shows on the product page but not during checkout, the checkout-specific display setting is probably disabled.

Solution: Open the module configuration and check the display settings for the checkout or order page. Enable that checkbox, save the configuration, and clear PrestaShop's cache. If it still does not appear, verify your theme is not overriding the checkout template.

Customers See "File Type Not Allowed"

This error appears when the file extension does not match your allowed types list.

Solution: Confirm "pdf" is in your allowed extensions list, including the dot. Some modules require the format ".pdf" and others accept "pdf". Check the module documentation for the exact syntax and update your configuration.

Large Files Fail to Upload

If customers cannot send files above a certain size, your server configuration may be limiting uploads before the module even processes them.

Solution: Check your PHP upload_max_filesize and post_max_size settings in your server configuration. These default to 2 MB or 8 MB on many hosting setups. Increase them to match or exceed the file size limit you set in the module.

Uploaded Files Are Not Linked to Orders

When files appear in the module dashboard but not on the order record, the linking logic may require the customer to complete the full checkout.

Solution: Verify the order was fully completed, not abandoned. If the customer left before confirming payment, the file may still be stored but unattached. For mandatory uploads, consider using the mandatory file upload module to enforce the upload before checkout can continue.

Module Configuration Changes Do Not Take Effect

PrestaShop caches configuration heavily, so changes may not appear immediately.

Solution: Clear the cache from the back office (Advanced Parameters → Performance) and refresh the storefront. Also check that you are saving the configuration before leaving the module page, as unsaved changes are lost.

Best Practices for Checkout File Uploads

Setting up file uploads is only the beginning. These practices keep your upload system secure, performant, and customer-friendly over time.

• Restrict allowed file types to what you actually need. Accepting every extension invites security risks and confuses customers with irrelevant options
• Set a reasonable file size cap, typically 5-10 MB for PDFs and images, and communicate the limit on the checkout page
• Review uploaded files regularly and delete test files or uploads from abandoned carts to keep storage under control
• Test the upload flow after every PrestaShop update, since new versions can change template hooks and module compatibility
• Tell customers why the upload is needed, for example "Upload your logo here" or "Attach your signed contract", so they understand the requirement

Conclusion

Accepting PDF uploads from customers on the PrestaShop checkout page comes down to installing the right module, configuring your accepted file types and size limits, then testing the complete flow from product page to order confirmation. The File Upload module gives you these capabilities without custom code, and its admin dashboard keeps all customer files organised and accessible.

When you implement checkout uploads correctly, you eliminate the email back-and-forth that slows down order fulfilment. Customers can attach everything you need in one step, and your team has a complete order record from the moment payment is confirmed. For stores that rely on customer documents to produce or personalise orders, that workflow improvement is substantial.

Frequently Asked Questions