jpeg-turbo

Fast JPEG image codec for efficient compression and decompression

brewmacoslinux

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JPEG image codec that aids compression and decompression

cjpegdjpegjpegtranrdjpgcomwrjpgcom

Compress a PNG image to JPEG format$ cjpeg -quality 85 input.png -outfile output.jpg

Decompress a JPEG image to PPM format$ djpeg input.jpg -outfile output.ppm

Rotate a JPEG image 90 degrees without quality loss$ jpegtran -rotate 90 input.jpg -outfile rotated.jpg