javascript - Transform images into a circular variant, changing circle size and place -


i love circular profile pictures, hate cant edit them. example dont want circle in middle , standard size, want smaller or something.

explanation pictures:

the 4 images, bottom top: input, image editor, moving circle, output

now, want put normal image in , there black overlay kind of opacity. in middle you'll have transparent circle can select part want in circle. can press save , there .png file made.

i thinking of doing jquery watermarks, couldn't figure out. got idea?

there couple of methods:

you can use css2/3 - corner-radius (for newer browsers) or overlay image, image can cropped, , background can scaled/moved via css background-position , background-size accordingly. save image, you'll need minimalistic php script do same operation server-side (given parameters) , output image user.

you can use html5 canvas - specification involves handy clip method (which straightforward - limits drawn imagery current path), , can obtain image data via todataurl method of canvas element long image uploaded same server (or cross-domain rules done right). minimal search on saving files js+html5 should further assist.

sample jsfiddle - http://jsfiddle.net/u2a7t/


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