SnapUpload feature

Verify MIME type, not just file extension

AvailableSecurityPro

Detect mismatched files so customers cannot bypass validation by renaming extensions.

Why it matters

What this unlocks

Your team can download customer files with better protection, clearer auditability, and less operational risk.

Best for

Where it fits

  • secure intake
  • mixed file fields
  • agency workflows
  • large teams

Feature deep dive

How mime verification improves the upload workflow

Security features protect the merchant side of the workflow. Customer uploads can include unknown files from unknown devices, so SnapUpload combines validation, signed access, scanning, retention, and auditability to reduce the risk of turning a download button into a liability.

Verify MIME type, not just file extension matters because detect mismatched files so customers cannot bypass validation by renaming extensions. For merchants selling custom products, this can directly affect conversion, support volume, and how quickly production can start after checkout.

This capability fits the Pro plan level in the current SnapUpload positioning, with the exact limits and controls shown on the pricing page. The feature is especially relevant for secure intake, mixed file fields, agency workflows, large teams, where missing files, unclear requirements, or slow handoffs can quietly eat margin.

Common use cases

Where merchants get value

  • Protect staff before they download files from unknown customer devices.
  • Create a clearer history for downloads, deletions, retention, and blocked files.
  • Support privacy-conscious stores that need more than a public file URL in checkout notes.

Implementation notes

What to check before launch

  • Test the feature on a real Shopify product before using it on a busy product page.
  • Confirm that the theme app embed is enabled after installation or reauthorization.
  • Use Upload History, scan status, and audit activity to verify the complete customer-to-merchant handoff.

Merchant workflow

How to use it

  1. 01

    Turn on the relevant protection in Settings for paid plans.

  2. 02

    Upload a test file and confirm the scan, validation, or signed download behavior.

  3. 03

    Use Upload History and Audit Log to review blocked files, downloads, and deletions.

Capability details

What SnapUpload handles

  • Server-side checks inspect uploaded files instead of trusting only the file name.
  • Blocked or invalid files are rejected before they enter the merchant workflow.
  • Works alongside extension allowlists, size limits, and malware scanning.

Related features

Keep building the same workflow.

These features sit in the same category, so merchants can understand the broader workflow instead of reading one isolated page.

Try it on a real product

Build an upload flow shoppers can complete before checkout.

Install SnapUpload