Overview

Method 1: Using the WorkDrive User Interface (UI)

Method 2: Using WorkDrive API

{
  "data": {
    "attributes": {
      "resource_id": "g576y886ac79ac5************",
      "link_name": "sample_link",
      "link_type": "download",
      "request_user_data": false,
      "allow_download": true,
      "expiration_date": "2021-12-12",
      "download_link": {
        "download_limit": "5"
      }
    },
    "type": "links"
  }
}

Append ?directDownload=True to the download_url before using it in Writer.

Method 3: Using Deluge Script

Step 1: Upload Image to WorkDrive

Use the below script and upload the image to WorkDrive.

workdrive_folder_id = "g576*****";
responseData = zoho.workdrive.uploadFile(image1,workdrive_folder_id,image1.getFileName(),true,"<connection_name>");
workdrive_resourceid = "";
if(responseData != null){
  responseList = responseData.get("data");
  responseData = responseList.get(0);
  workdrive_resourceid = responseData.get("attributes").get("resource_id");
}

attribute = Map();
attribute.put("resource_id", workdrive_resourceid);
attribute.put("allow_download", true);
attribute.put("request_user_data", false);
attribute.put("link_name", "sample_link");
attribute.put("expiration_date", "2021-12-12");

attributeMap = Map();
attributeMap.put("attributes", attribute);
attributeMap.put("type", "links");
param = Map();
param.put("data", attributeMap);
paramString = param.toString();

mp = Map();
mp.put("Accept", "application/vnd.api+json");
makeExternalLink = invokeurl
[
  url :"https://workdrive.zoho.com/api/v1/links"
  type :POST
  parameters:paramString
  headers:mp
  connection:"<connection_name>"
];

linkobj = makeExternalLink.get("data");
downloadlink = "";
if(linkobj != null)
{
  constructURl = linkobj.get("attributes").get("download_url");
  downloadlink = constructURl + "?directDownload=True";
}

Summary

1. You must obtain a public download URL from Zoho WorkDrive.
   
2. Append ?directDownload=True to the end of the URL.
   

Troubleshooting

1. Avoid using WorkDrive external share links for image merge fields when merging large numbers of images.
   
2. Instead, use the direct download link of the image file instead of the external share link or ensure the image source can handle multiple simultaneous download requests without throttling.
   
3. Retry the merge after updating the image URLs.