Hey @takbb and @nizamibilal1064 ,
Thank you for sharing your approach — really nice work! Funny enough, we were working on the same problem at the same time. 
You can find a shared component and workflow example below:
- Multipart Form-Data Builder
(Component) - mutlipart-form workflow (Workflow)
The main difference is that we tried to avoid script nodes entirely, and we added the option to explicitly define the object type for the multipart call. I wanted to share this here as well to gather early feedback.
This isn’t just my work but the result of a more collective effort, and I turned it into a reusable component so others can try it out.
That’s why I thought it belonged here on the Forum, too.
Looking ahead, our goal is to improve the component further — in particular, to reduce execution time and remove the costly binary → base64 → bytes → base64 → binary conversions.
Happy to hear any thoughts or ideas from you and the community!