So if you only have 1 or 2 images to convert, it’s worth a look.
The bad news is, the service is no longer free which is a real shame, although if you register you get 2 free tokens which counts as 2 free conversions. The results are just about the best I have seen for an online service. All you need to do is upload your image and they would vectorize it for you. There is a website called Vector Magic which used to offer a free online auto-tracer service to convert bitmap images to vector images. The good news is, you can vectorize bitmaps so they can be scaled or enlarged while maintaining quality.
This is why resizing bitmaps can sometimes look quite bad because the guesswork inevitably is never going to be 100% accurate. The paint program then has to make a series of guesses as to what colors to put in those new blank pixels and fill in the gaps. When you resize a bitmap image, the pixels themselves don’t get stretched but new blank pixels are inserted to increase the size. JPG, PNG and GIF are bitmap images and each pixel has it’s own color information which you can see if you zoom right in using a paint program.
Because all the information in vector images is simply stored as a set of mathematical numbers, when you modify or resize that image all you’re actually doing changing the properties of the vectors and not trying to stretch or distort anything. Each of these vectors can then be given extra information such as color, line thickness, infill etc. Where a standard image you would think of is made up of dots, or pixels, a vector image is a text file made up of a series coordinates and other numbers which defines sets of lines, shapes and curves called vectors. There are actually two different types of image, a vector image and a bitmap image.Ī Vector image isn’t an really image at all as you would define it in the traditional sense.
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