JPEG to PDF is one freeware from www.jpegtopdf.com, it is one small converter that can instantly convert JPEG images into PDF files, it is one standalone program and does not require Adobe Acrobat or Acrobat Reader. It is very easy to use, conversion is simple and fast.
PDF_to_JPG FREE command line utility to extract all jpeg files from pdf without any jpeg recalculation. Mirror to JPG_to_PDF project Download
KF_Jpeg_Fit_File_Size FREE KF - Fit jpeg to a maximum filesize. Reduce jpeg quality to fit that file size (e.g., slideshow/PDF of a given total size-90 jpgs each below 90,000 bytes). -- Usage: "kf in.jpg FILE_SIZE out.jpg" or Fit into 90k bytes -- "kf in.jpg 90000 out.jp" Download
JPG_to_PDF FREE Command line utility for combining all jpeg files from selected folder to pdf file without any image conversion/recalculation. Download