**Source URL:** https://general.veevavault.dev/commercial/library/guides/external-document-viewer.md # Vault External Document Viewer You can embed the external document viewer into a website or use it as a standalone viewer for documents in your Vault. Vault ensures that only the latest steady state version of the document will be accessible through the viewer at all times. The External Viewer has the following unique properties: * Allows anonymous access to documents stored in Vault. * Can be embedded in an iFrame within a website using the JavaScript code below. * Supports use as a standalone browser page. The Token API generates document access tokens needed by the external viewer: * A valid Vault session is required to ensure the non-Vault user has access to the document. * Only users with a view-based license can access the endpoint to request an anonymous viewing token. * In order to generate the token, a valid session ID is required. ## Setting up the External Viewer {#setting-up-the-external-viewer} You can include the following snippet of JavaScript code into your website to display a specific Vault document. ```

``` Once the viewer is embedded, a Vault Document Token generated for the desired document needs to be provided in the URL parameters, as well as a DNS parameter to pass the source Vault's DNS. ## Generating Tokens for Vault Documents {#token-gen} Generate tokens with the [Document Tokens endpoint](/vault-api/api-reference/26.1/documents/document-tokens). ## How to Create the URL {#ex-viewer-create-url} When sharing your documents in an embedded viewer, users must navigate to a URL that includes both the anonymous viewing token and your Vault's DNS: ``` https://{PAGE_WITH_EMBED_SCRIPT}?token={VIEWING_TOKEN}&dns={CUSTOMER}.veevavault.com ``` For example, a URL for information for the CholeCap product might be: ``` https://cholecap.com/about.html?token=3003-cb6e5c3b-4df9-411c-abc2-6e7ae120ede7&dns=myvault.veevavault.com ``` If you want to display multiple documents in the viewer, use the `tokenGroup` parameter when requesting tokens and use any of the tokens from the response within the URL. Vault will determine whether a token belongs to a group and will automatically show all documents within the group. The token in the URL corresponds to the document that displays when the viewer loads.