![]() This might be useful if a JPEG is corrupted and you can't view the main image, or you just need some thumbnails and don't have any other tools to produce them. ![]() There's a command to save the thumbnails you'll find in some JPEG headers. If your camera clock was set incorrectly, you're able to add or subtract a date/ time offset to restore the correct values. You might set all your JPEG date/ times to whatever is specified in the Exif header, say, or rename them using a custom format. The program provides various ways to tweak your JPEG timestamps. Jhead can extract comments from your JPGs to a file, replace them with custom text of your own, even transplant the Exif header from one image into one or more others. There are also commands to delete particular sections of the header (IPTC, XMP, the comment field). The program is able to strip out unnecessary metadata, reducing file size a little and maybe protecting your privacy. ![]() (Don't necessarily be put off by "command line". Jhead is a tiny (160KB) command line tool which can manipulate JPEGs in various ways. ![]()
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