Today we released a new tool to help you use the Adobe PDF Extract API:
https://documentcloud.adobe.com/dc-visualizer-app/index.html
This online demo will show you a source PDF and a nicely rendered version of the JSON. You can click on an element in the left hand side to see the code version of the output. You can click on the code on the right to see the associated visual element in the PDF. You can also download the PDF + extract data to look at it youself. Check it out and let us know what you think!