Javascript Resize Image From Url. Takes a data uri and returns the data uri corresponding to the resized image at the wanted size. Create html input id imagefile name imagefile type file class imagefile accept image input type button value resize image onclick resizeimage br img src id preview img src id.
To resize an image proportionally set either the height or width to 100 but not both. Create an instance of image. Canvas is just a container for your graphics javascript is used to draw.
Else var dataurl canvas todataurl image png.
Var file filestoupload 0. Set the image once loaded into. If file type image jpeg var dataurl canvas todataurl image jpeg 1 0. Var w image width.