How to preview attached images clearly instead of thumbnail quality in Test Case view?

[Vitheya Monikha]

In our Test Case view page, we display image attachments using an API that returns thumbnail-quality images.

Issue:
When users open or preview the attachment, the image appears blurred / low quality and is not clearly visible.

Current behavior:

API provides only thumbnail resolution

Used for displaying attachments in Test Case view

Full-quality preview is not available

Question:
 Is there a recommended way to preview or load the full-resolution attachment instead of thumbnail images?

• Is there a separate API to fetch the original attachment?
• Can thumbnails be replaced with a full-size preview on click?
• Any best practices for handling image previews in this scenario?
• Looking for guidance or examples to improve attachment preview quality.

Thanks!