FlyConverter
FlyConverter is a powerful tool to convert and edit image files in automatic mode. For example, FlyConverter can select all uncompressed TIF files and convert them to a Group 4 compressed TIFs every hour OR process JPG images larger than 640 x 480 pixels every day, week and so on. ... To start processing image files you will need to create a scheduled task for each type of conversion. ... As soon as a task is created all files stored in a folder defined as "Source folder" in Step 2 will be processed according to the task settings.
http://www.flyconverter.com/files/flyconverter.exe - 3Mb - Download - Screenshot

csImageFile
This ASP component resizes, edits and joins images. It supports JPG, GIF, BMP, PNG, PCX, PSD, TIF and WBMP files and can convert between them. You can create thumbnails and change JPG compression quality to reduce the size required for storage. Add text labels, draw lines and shapes with... It can also read data from the csASPUpload component to process images uploaded through a browser. ... Read, write and edit IPTC text from JPG and TIF files. ... Extract and edit EXIF attributes from JPEG files.
http://www.chestysoft.com/download/csift.zip - 860Kb - Download