Anonymous said: hi, I always have this problem when I want to upload my art to tumblr. The picture always pixelates and changes colour slightly, i have no idea how to fix this, at first thought its because i should be using RGB but I've tried both and it still happens. So I always end up just taking a screenshot of my pic and uploading that instead. I haven't seen anyone else complain about this so it must just be me. Do you maybe know what i did wrong or how i could fix this? thanks
Tumblr uses, like most browsers, the colour range sRGB. It’s a small colour range developed for screen viewing and internet by Microsoft and HP. The sRGB colour space is well specified and is designed to match typical home and office viewing conditions, rather than the darker environment typically used for commercial colour matching.
Depending on what program you work with, you might not be drawing in sRGB, but other colour spaces, like Adobe RGB or CMYK. I work with Adobe RGB in all my paintings, because it offers me a broader colour range while painting, but because browsers can’t display it, I convert my images to sRGB when I export them for web viewing. Fox-Orian has made a great tutorial about file types and exporting for web with Photoshop, so I’ll just link to his tutorial.
Another thing that could be causing your problems is lossy jpeg conversion. Not all jpeg formats support a full 8-bit colour range and muddy down your colours. Try saving your images for web in PNG-24. You’ll get smoother gradients, better colour accuracy and more than 16 million available colours.
Sometimes it helps to test around as well. I found out that tumblr is doing pretty well with high quality jpeg files, while Facebook is only being accurate with colours when I use PNGs. Different platforms use different colour spaces and although it sucks to test it out, it’s worth it in the end for better image quality.