Firstly, I apologise if a similar thread to this one has already been created.
So, since I bought a new laptop (which I don't think is the problem behind this but in any case, it's a HP Pavilion Notebook 14), all the PNGs I upload to a certain site I'm part of are kind of blurry (not exactly blurry but kind of pixelated?). This doesn't seem to happen with other members' pictures, only mine are not showing up correctly.
In any case it's needed, I edit my pictures with Photoshop CS6 (downscaling them to 800x480 px and adding a Paint Daubs effect), then upload them on imgur and finally post them on the site.
I don't know if it's a notable difference, but I can assure you the second picture is not as sharp as it is on Photoshop, imgur or even when previewing before posting.
Anyone knows why it is happening? Is it a bug with Chrome (because the pictures are WAY better-looking on Firefox) or with the site?