Google Drive PDF to JPG Converter App (iOS, Android). This app allows you to create new documents, edit PDF documents, convert PDF to JPG, open compressed images via the browser, edit photos in the Photos/Gallery app and more. You can copy and paste a document into the other apps to open it in the right app using the link. 3. Paper.app (Android). Paper is free PDF to JPG Converter App. 4. Adobe PDF to JPG Converter (iOS, Android). PDF to JPG Converter is a free PDF to JPG Converter app to convert PDFs to the JPG. 5.