Hello, I been editing some photos, save them in PSD, the weight is like 5 mg to 8 mg, size like 4320 x2432 or similar. I wan to use this pictures for a web site portfolio and would to keep the same look I got in photoshop with grain effects etc. How can I downsize this whithout affecting quality? I have try to change image size in cs6 or tansform the image , but the quality goes down very clearly. Is there any other way, software etc?