NXPowerLite can reduce the file size of your JPEG photos by more than 50% without resizing them. 

We decode and then re-encode JPEGs using more efficient settings. This allows us to substantially reduce the file size without reducing the image resolution and without changing the perceptual quality of the image. The lossy compression approach we use does create slight pixel differences in the before and after file. If you analyze the uncompressed and compressed images with a computer using a threshold algorithm, you can see minor differences — but by eye, they look identical.

Printing optimized images

Image resolution is the main factor when considering how images will print - if the resolution is too low then it negatively affects the print quality. Because NXPowerLite doesn't change the image resolution you can be comfortable that images on your network will still look great when printed.

Original Image File size: 5.6 MB Dimensions: 3744 x 5616

Original Image
File size: 5.6 MB
Dimensions: 3744 x 5616

Optimized Image File size: 2.3 MB Dimensions: 3744 x 5616

Optimized Image
File size: 2.3 MB
Dimensions: 3744 x 5616

Original image 100% Zoom

Original image
100% Zoom

Optimized image 100% zoom

Optimized image
100% zoom

Comparison

Description File size Reduction Resolution File link
Original image 5.5 MB 0% 3744 x 5616
Optimized image (quality 9) 4.4 MB 20% 3744 x 5616
Optimized image (quality 8) 2.3 MB 58% 3744 x 5616
Optimized image (quality 7) 1.6 MB 71% 3744 x 5616

How it works

Where appropriate, NXPowerLite applies additional JPEG compression to images. The default setting (8) will result in an undetectable loss of quality, even at 100% zoom or when printed.

NXPowerLite uses a number of additional techniques to reduce the amount of data in JPEG files, resulting in impressive size reduction without any discernible loss of quality. These techniques include optimized Huffman coding and Chroma subsampling.

Note: By default JPEG images are not resized as part of the optimization process and EXIF metadata is preserved.