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Avatar pic help.

elderoneelderone Posts: 1,410
edited January 2013 in Road beginners
How do I size a pic to use as an avatar.I have tried and tried but keeps getting rejected.Any correct way of doing it?.
cheers
Dulce et decorum est Pro patria mori

Posts

  • sungodsungod Posts: 14,343
    80x80 pixels
    my bike - faster than god's and twice as shiny
  • elderoneelderone Posts: 1,410
    Done that but says 9.7kib what ever that is.
    Dulce et decorum est Pro patria mori
  • canny_ladcanny_lad Posts: 329
    Had the same problem elderone. Google resize image to 80x80 and I found a website in the results that let me resize my image and then save it so it would upload.

    Good luck, it's a faff but you'll get there.
  • GizmodoGizmodo Posts: 1,928
    As said it needs to be 80x80 pixels, but it also needs to be less than 9.77kb in size.

    Imagine a picture as a grid of 80 by 80 squares. If each square could be black or white then you would need 80 x 80 bits (a bit is an on or an off / a 0 or a 1) to store the image. The problem is that in most images each square can be 1 of 16 million colours. So each square in a default image needs 24 bits. So in your 80 x 80 image you multiply that by 24 bits (80 x 80 x 24 = 153,600 bits which is 150kb) "k" is x1024 in binary.

    So as well as reducing the dimensions of your photo, you also need to reduce the number of colours. 24 bit colour is "True Colour" (16 million colours per square), 16 bit colour is "High Colour" (or 4096 colours per square) or 8 bit colour gives you 256 colours per square.

    Reducing your image to 16 bit colour will be 80 x 80 x 16 = 102,400 bits / 1024 = 100kb (still too large)

    Reducing your image to 8 bit colour will be 80 x 80 x 8 = 51,200 bits / 1024 = 50kb

    If you still can't face it, send me a PM, I'll give you my email address, send me the image and I'll do it for you.
  • smoggystevesmoggysteve Posts: 2,909
    Open a pic in windows with paint.

    Resize on toolbar - change size to pixels. change to 80 on horizontal or vertical whichever makes 80 the highest value if not perfectly square. look at the bottom of the screen . it will tell you file size. If too big, save as a lesser detailed jpeg to bring down memory size
  • elderoneelderone Posts: 1,410
    thanks for all the replies lads,sorted now.Gizmodo thats a very detailed reply and totally over my head but thanks for the offer.Appreciated.
    Dulce et decorum est Pro patria mori
  • smoggystevesmoggysteve Posts: 2,909
    Gizmodo wrote:
    As said it needs to be 80x80 pixels, but it also needs to be less than 9.77kb in size.

    Imagine a picture as a grid of 80 by 80 squares. If each square could be black or white then you would need 80 x 80 bits (a bit is an on or an off / a 0 or a 1) to store the image. The problem is that in most images each square can be 1 of 16 million colours. So each square in a default image needs 24 bits. So in your 80 x 80 image you multiply that by 24 bits (80 x 80 x 24 = 153,600 bits which is 150kb) "k" is x1024 in binary.

    So as well as reducing the dimensions of your photo, you also need to reduce the number of colours. 24 bit colour is "True Colour" (16 million colours per square), 16 bit colour is "High Colour" (or 4096 colours per square) or 8 bit colour gives you 256 colours per square.

    Reducing your image to 16 bit colour will be 80 x 80 x 16 = 102,400 bits / 1024 = 100kb (still too large)

    Reducing your image to 8 bit colour will be 80 x 80 x 8 = 51,200 bits / 1024 = 50kb

    If you still can't face it, send me a PM, I'll give you my email address, send me the image and I'll do it for you.

    Wow Gizmodo - Do you see in binary like Neo? You kind of went off on one there.
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