Convert pdf to hdr Online: pdf2hdr
You can use Tom's Editor to easily convert images from
Portable Document Format .PDF to Radiance RGBE image .HDR.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
PDF
Adobe PDF format is the most popular document format. Overcomplicated. Offers compression.
HDR
Radiance RGBE image is an image format with extension HDR.