Google's "Report a Bug" or "Feedback Tool" lets you select an area of your browser window to create a screenshot that is submitted with your feedback about a bug.   Screenshot by Jason Small, posted in a duplicate question....
I am trying to paint an image on a canvas before I get its dataURL(), but the data returned is like empty.    When I check it in the console, I see there is a lot of A in the string : ("data:image/png;base64,iVBO..some random chars... bQhfoAAAA...
I'm trying to create a thumbnail image on the client side using javascript and a canvas element, but when I shrink the image down, it looks terrible.  It looks as if it was downsized in photoshop with the resampling set to 'Nearest Neighbor...
I'm an experienced Java programmer but am looking at some JavaScript/HTML5 stuff for the first time in about a decade.  I'm completely stumped on what should be the simplest thing ever.  As an example I just wanted to draw something and add...
Is it possible to query a HTML Canvas object to get the color at a specific location?...
Is it possible to get the RGB value pixel under the mouse? Is there a complete example of this? Here's what I have so far:  <script> function draw() {   var ctx = document.getElementById('canvas').getContext('2d');   var i...
I have this code for create canvas image from different server urls  function getBase64Image(imageUri) {      var canvas = document.createElement("canvas");     ctx = canvas.getContext("2d");      var img = new Image();     img.src...
There doesnt seem to be a native function to draw an oval-like shape. Also i am not looking for the egg-shape.  Is it possible to draw an oval with 2 bezier curves? Somebody expierenced with that?  My purpose is to draw some eyes and actually im ju...
Well, I need some help about convert .svg file/image to .png file/image...  I have a .svg image displayed on my page. It is saved on my server (as a .png file). I need to convert it to a .png file on demand (on click on a button) and save the .png...
I want to capture a frame from video every 5 seconds.   This is my JavaScript code:  video.addEventListener('loadeddata', function() {     var duration = video.duration;     var i = 0;      var interval = setInterval(function() {         vi...

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