[Help Needed] Download Tool Returns Null for E-commerce Image Links Despite 200 OK

[alhamzafri_khairin]

Hi Alteryx Community,

I’m working on a project involving product image URLs from an e-commerce platform and encountered an issue. My goal is to preview product images from the product image links using the Download Tool + Blob Convert Tool, even if the URL doesn’t end with .jpeg or .png. For certain URLs, Alteryx returns null in the DownloadData field, even though the DownloadHeaders indicate HTTP/1.1 200 OK. 

I have tried several ways, such as 

• Added these custom headers in the Download Tool:

  • User-Agent: Mozilla/5.0

  • Referer: [main platform domain]

  • Accept: image/*

• Verified the links work in a web browser

• Checked for missing extensions like .jpeg — issue happens with or without them

So my questions are

1. Why is Alteryx returning null despite a 200 OK response?

2. How can I get Alteryx to treat these links as downloadable images even without extensions?

3. Any workaround to force image interpretation in Blob Convert?

I have attached the workflow along with sample URLs for testing. Thanks in advance for your help! Would love any suggestions or ideas.

[Gaurav_Dhama_ · Accepted solution]

Try this alternative.

[alhamzafri_khairin]

hi @Gaurav_Dhama_ ,

Thank you for helping me on this. The workflow works fine, but is it possible to run the workflow with the images as a temporary file instead? I want to avoid downloading a ton of images into my local device. 

[Gaurav_Dhama_]

You can provide a temp path there in the formula tool.

The reason why I added a path there is so that i can pass the extension as well.

using the option “save as temp file” in download tool saves it as a generic temp file without extension.

[alhamzafri_khairin]

Got it! Another thing is that somehow I have an image that can't be rendered and gives an error stating that the image is not a JPEG file. I checked, and it is a PNG file (based on the error 0x89 0x50). Is there a way to detect  PNG files without having to filter out that specific image file in between processes?