How to reduce the size of your photos without losing quality?

Photos saved in high resolution quickly take up a lot of space on a smartphone or cloud space. Google has a compression tool to reduce the size of images with minimum loss of resolution.

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The memory space (expressed in KB, MB or GB) occupied by an image depends on its size (expressed in pixels) but also on its format (jpeg, png, tiff ...) and its resolution (in pixels per inch ). A high resolution photo can easily exceed 5MB and on a smartphone , it weighs about 2 MB. That is to say that we can stocker a maximum of 5,000 photos in a 10 GB space. Unfortunately, reducing the size of your photos generally involves a loss of quality, because the number of pixels is reduced.

<img data-txdam="50144416" class="img-responsive lazyload" src="https://cdn.futura-sciences.com/buildsv6/images/mediumoriginal/2/8/4/284ae95096_50144416_squoosh.jpg" alt="With Squoosh, it is possible to reduce the size of photos by up to 70% without loss of quality visible to the naked eye. © Squoosh screenshot" title="With Squoosh, it is possible to reduce the size of photos by up to 70% without loss of quality visible to the naked eye. © Squoosh screenshot"/> <img src="https://cdn.futura-sciences.com/buildsv6/images/mediumoriginal/2/8/4/284ae95096_50144416_squoosh.jpg" class="img-responsive" alt="With Squoosh, it is possible to reduce the size of photos by up to 70% without loss of quality visible to the naked eye. © Squoosh screenshot" title="With Squoosh, it is possible to reduce the size of photos by up to 70% without loss of quality visible to the naked eye. © Squoosh screenshot"/> With Squoosh, it is possible to reduce the size of photos by up to 70% without loss of quality visible to the naked eye. © Squoosh screenshot

With Squoosh , Google has an online tool using the latest compression techniques and D' artificial intelligence which minimizes the loss of quality. The application is particularly designed for web developers who want to reduce the loading speed of their pages but it can be used by everyone. Just choose a photo or drag it across the screen and start the process (which can take one to several seconds). The result is quite convincing. A jpeg image can be reduced by up to 70% with almost no difference visible to the naked eye. The photo can be converted into 10 different formats (we recommend that you use MozJPEG, the Mozilla encoder offered by default, for a larger reduction).

Adjust compression settings The real advantage of Squoosh is that it can precisely adjust each parameter ( compression , grain, quantification ...) by clicking on "advanced settings" in the window at the bottom right. It is even possible to modify and reduce the color palette or the diffusion of errors. A clever screen separator allows you to compare the photo before / after, and to adjust the parameters if necessary before downloading the photo in the desired format. The only drawback: the site is quite memory intensive on the computer .