You can customize the Custom Previewer Tabs, which always render one format at the time.
This handy tool might help you to fix the following issues:
Format the BODY as JSON, but the Content-Type isn't
Format the body as Protobuf, but the Content-Type isn't
Render HTML Page on the Web View
Beautify the minified files (HTML, CSS, JS)
Try to format the body as the selected type regardless of the
You can access via:
The Action button on the right side of the Detail Panel
Tools Menu -> Custom Previewer Tab...