CloudConvert - convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.
JPEG to PDF - JPEG to PDF is a free program that can convert image files to PDFs.
Smallpdf - PDF document management and conversion suite
JPG to PDF Converter - Free online conversion of images to PDF files.
Clipperly - Convert, edit or optimize your files online. More than 400 different formats supported among documents, images, spreadsheets, ebooks, archives, presentations, audios and videos.
Convert-JPG-to-PDF.net - Convert JPG to PDF for free with this online service.