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

# Sandbox mode

We highly recommend you to set the `sandbox` parameter to `true` when starting with PDFShift, and in development mode.

When enabled, the sandbox parameter **adds a watermark to your generated PDF, but does not count the conversions made via PDFShift**.
That way, you can set up your code and run multiple tests without worrying about your remaining credits.

Once all is set, you can run a last test locally with the sandbox removed or set to `false` to ensure the PDF renders exactly like you want.

<Note>In case you forgot to set the sandbox parameter to true in your free plan while working on your code, don't worry, simply reach out to us and we'll remove up to 50 off your credits usage for free during the first month :)</Note>