There are plenty of resources and tutorials on the net for this, so I won't write a new one. ![]() In either case you can create a batch script in Photoshop to do this for you. ![]() You can apply techniques such as sharpening convolution to make it appear as if it is the same quality, but technically it will not be. If you mean reducing the pixel size of an image it will always remove information, hence also remove quality. JPEG will remove information and therefor also quality. If you need to maintain the quality, you will need to use a so-called lossless compressor such as TIFF with LZW, PNG etc. ![]() Reducing the size is possible if your 20mb images are in an uncompressed format (RAW, BMP etc.).
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