#FB IMAGE VIEWER FULL#

When looking at images using a color space aware image viewer or my browser, I can see no difference between the two, so the “c2” profile is indeed very similar to sRGB, as indicated in this article from a Facebook engineer. In addition to compressing the image, Facebook’s image compression algorithm also removed all of EXIF data, PPI data and changed out the color profile information, replacing “sRGB IEC61966-2.1” with a “c2” color profile. How much compression is applied? It depends on each image, but it seems like the compression varies between 47-61% quality equivalent in Lightroom. If you look closely, the “After” image shows some artifacts in the sky and around the subject, but it is not bad and certainly tolerable. The original file size was 204 KB in the “Before” state and Facebook resized it to 64 KB, so there is a pretty aggressive compression algorithm taking place here. What does Facebook do to an image that is extracted at a recommended resolution? Let’s take a look at the before and after of an image that I extracted from Lightroom at 960 pixels wide resolution and 77% JPEG Quality: What is the impact to a photo, if it is uploaded at say 980 pixels instead of 960? And what happens if one accidentally uses a different color profile like Adobe RGB or ProPhoto? Let’s take a look at these case scenarios and see. What I wanted to find out, was what happens if one is to upload images at these and at different sizes. Profile Picture in Header: 180 px by 180 pxīased on the above data, the three best resolutions to extract photographs are 720, 9 pixels.

#FB IMAGE VIEWER FULL#

Full Width Link Thumbnails: 484 px by 252 px.As of, below are the recommended sizes for uploading photographs to Facebook: Still, Facebook recommends resizing images to certain resolutions before they are posted, as explained in this article. Since then, a lot of things have changed for the better – Facebook’s image processing engine has gotten much more advanced and better, so most issues of the past have thankfully been addressed. If you were not very careful about the particular resolution you resize to and if you exported images in anything other than sRGB, your photographs would look nothing like they did on your computer. If you were to upload an image back then, it would not only make it look awful by compressing the heck out of it, but it would also strip out the color profile. Facebook Image Resizing and CompressionĪ few years ago, Facebook was terrible at resizing images. Resizing Images from Photoshop for Facebookġ.Resizing Images from Lightroom for Facebook.Facebook Image Resizing and Compression.

Fb image viewer