Advanced JPEG Compressor 

Advanced JPEG Compressor is a handy tool to compress images. Shrink the large file size of images, optimize pictures for faster loading from the Web, e-mail photos quickly and not exceeding e-mail size limitations, resize images and make thumbnails.
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DietJPEG 

It removes unnecessary parts of JPEG files and keep the quality of JPEG image files. Most of the jpeg files are compressed by photoshop software. It can reduce your jpeg image file size by removing extra information inside the JPEG images.
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