Use an online PDF to JPG converter
Upload the PDF file
Select JPG as the output format
Convert the file
Download the JPG images
Use Adobe Acrobat if you have it
Open the PDF in Acrobat
Export or save it as an image format
Choose JPG as the file type
Save the converted images
Use a desktop converter app
Open the app and import the PDF
Select JPG conversion
Convert and save the output
Use a screenshot tool for a quick single-page image
Open the PDF page
Capture the page as an image
Save the screenshot as JPG