Take a snapshot at the current time in a <video>.
Image shows just the video frame at the size it's displayed, without any overlays.
Opens JPEG image in new tab. Click to save it and right-click for context menu options like Search Google for image or Copy image etc. Save image as... will not work.
Source code: youtube-screenshot.js
Uglified: youtube-screenshot.min.js
javascript:"use strict";!function(window,document){var canvas=document.createElement("canvas"),video=document.querySelector("video"),ctx=canvas.getContext("2d");canvas.width=parseInt(video.offsetWidth),canvas.height=parseInt(video.offsetHeight),ctx.drawImage(video,0,0,canvas.width,canvas.height);var base64ImageData=canvas.toDataURL("image/jpeg"),filename="snap-"+canvas.width+"x"+canvas.height+"-"+video.currentTime+".jpg",a=document.createElement("a");a.download=filename,a.href=base64ImageData;var img=document.createElement("img");img.src=base64ImageData,img.alt=filename,img.title="Click to save "+filename,window.open().document.body.appendChild(a).appendChild(img)}(window,document);Download the image directly, without displaying it in a new tab.
Source code: youtube-screengrab.js
Uglified: youtube-screengrab.min.js
javascript:"use strict";!function(window,document){var canvas=document.createElement("canvas"),video=document.querySelector("video"),ctx=canvas.getContext("2d");canvas.width=parseInt(video.offsetWidth),canvas.height=parseInt(video.offsetHeight),ctx.drawImage(video,0,0,canvas.width,canvas.height);var a=document.createElement("a");a.download="snap-"+canvas.width+"x"+canvas.height+"-"+video.currentTime+".jpg",a.href=canvas.toDataURL("image/jpeg"),document.body.appendChild(a).click(),a.remove()}(window,document);
Reference: https://stackoverflow.com/a/13765373/1099314
- Doesn't work on
file:///URLs...SecurityError: Tainted canvases may not be exported.