> ## Documentation Index
> Fetch the complete documentation index at: https://docs.filecheck.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenCart installation

> Install the Filecheck module and require validated uploads on product pages.

<Note>
  Want to see it working first? Try the [live OpenCart demo store](https://demos.oc.filecheck.io/), then install it on your own shop below.
</Note>

<Steps>
  <Step title="Install the module">
    Upload and install the Filecheck extension from **Extensions → Installer**, then enable it under **Extensions → Modules**.
  </Step>

  <Step title="Add your keys">
    In the module settings, enter your **publishable key** and **secret key** from the [dashboard](https://admin.filecheck.io). Save. Once saved, your active workflows will automatically load as a dropdown.
  </Step>

  <Step title="Choose a default workflow">
    Select your default **Workflow** from the dropdown menu to apply it across your catalog.
  </Step>

  <Step title="Enable per product">
    On a product edit screen, enable Filecheck, tick **Require upload**, and select the specific workflow from the loaded dropdown list (or leave empty to inherit the default). The Element renders on the product page and gates **Add to cart** until a file passes.
  </Step>

  <Step title="Verify after purchase">
    Use your secret key server-side to fetch the job and download the validated file. See [Verify jobs](/server/verify-jobs).
  </Step>
</Steps>

<Tip>
  OpenCart and PrestaShop share the same front-end snippet. See the [OpenCart & PrestaShop reference](/integrations/opencart-prestashop).
</Tip>