Getting Started

Filestack Architecture

File Upload

File Export (Save To)

Responsive Images

Image Transformations

Document Transformations

Video Transcoding

Audio Transcoding





Filestack Viewer


Supported Cloud Drives

Filestack Recipes

Filestack Integrations

Filestack SDKs

Register for an API key

Security - Using Filestack File Policies

Once you've generated a policy and its signature, you can use it in three ways.

  1. Append the policy and the signature to the Filestack file URL signature=4098f262b9dba23e4766ce127353aaf4f37fde0fd726d1 64d944e031fd862c18&policy=eyJoYW5kbGUiOiJLVzlFSmhZdFM 2eTQ4V2htMlM2RCIsImV4cGlyeSI6MTUwODE0MTUwNH0=

  2. In the javascript library

    For each of the calls in the javascript library, you can specify a signature and policy in the options field of any Filestack files javascript api call.

    Example with JSFiddle:

  3. In the widgets

    For the pick and drag-drop widget, you can specify a data-fp-signature and data-fp-policy.