JPG to PDF Converter is an easy-to-use app to convert multiple JPG files to one PDF file offline. First, you choose any JPG files on your Android phone, select a preset PDF page size or enter page width and height, set PDF page orientation, then tap the "Convert to PDF" button to start conversion. JPG to PDF Converter uses multithreading to improve conversion speed. It only takes a few seconds to convert hundreds of image files. Additionally, we provide free online conversion services to convert JPG to PDF or convert PDF back to JPG.