html2canvas | Screenshots with JavaScript | Image Editing library
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kandi X-RAY | html2canvas Summary
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of html2canvas
html2canvas Key Features
html2canvas Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyimport React, {Component, PropTypes} from 'react';
// download html2canvas and jsPDF and save the files in app/ext, or somewhere else
// the built versions are directly consumable
// import {html2canvas, jsPDF} from 'app/ext';
export deimport React, {Component, PropTypes} from 'react';
import html2canvas from 'html2canvas';
import jsPDF from 'jspdf';
import Pie from './Pie.js';
class Qu extends Component {
constructor(props) {
super(props);
}
printDocument() import React, {Component, PropTypes} from 'react';
// download html2canvas and jsPDF and save the files in app/ext, or somewhere else
// the built versions are directly consumable
// import {html2canvas, jsPDF} from 'app/ext';
eximport * as jsPDF from 'jspdf';
import html2canvas from 'html2canvas';
htmltoPDF()
{
// printDiv is the html element which has to be converted to PDF
html2canvas(document.querySelector("#printDiv")).then(canvas => {
npm i jspdf
npm i html2canvas
import * as jsPDF from 'jspdf';
import h2c from 'html2canvas';
loadPDF() {
let doc = new jsPDF('p', 'pt', 'a4');
h2c(document.getElementById('pagePrintPdf')).then(function (canvas) {
#content {
outline: 1px solid red;
}
"scripts": [
"node_modules/html2canvas/dist/html2canvas.min.js",
"node_modules/jspdf/dist/jspdf.min.js"
]
import jsPDF from 'jspdf';
import html2cimport React, { Component } from 'react';
import html2canvas from 'html2canvas';
class App extends Component {
constructor(props) {
super(props);
this.state = { canvasArray: [] };
this.captureRef = React.createRef();
}
download(){
console.log("outside -> download() " + this.problems.length);//works
var that = this; // assign this to variable that and use it inside html2Canvas function
html2canvas(document.getElementById('graph')).then(funCommunity Discussions
Trending Discussions on html2canvas
QUESTION
Objective - Take a screenshot of the page, then make pdf of that and send that pdf to the spring boot backend.
I have implemented the functionality to take the screenshot and convert it into pdf using html2canvas and pdfmake JavaScript libraries.
Issue - I don't know how to send the generated pdf to the backend. I got to know about base64 encode but I am still confused.
Code -
...ANSWER
Answered 2022-Apr-10 at 12:57According to the docs of pdfmake you're able to get the generated PDF as a Blob with the getBlob method. The Blob will be a binary representation of your PDF which you can send to your server.
Blobs need to be wrapped inside a FormData object before they can be sent.
Edit: Switch to the latest version (1.4.1) of html2canvas. The older version didn't work properly. The latest versions uses Promises which allows us to use async functions and, in my opinion, makes your code more readable.
The beta version of pdfmake uses Promises instead of a callback function, but the latest stable version (0.2.5) does not. But we can solve this by wrapping the callback with a Promise to still be able to use the async / await syntax.
QUESTION
I know this has been asked many times, but the async/promise concept is very obscure to me! I am trying to take a screenshot using html2canvas and once the (or multiple) screenshots are generated, continue with the function and send it through a POST request.
Here's what I've done so far:
...ANSWER
Answered 2022-Mar-24 at 17:27It depends on how your grouping your data but this is a simple example. async functions return a promise so you need to await them too.
QUESTION
I'm trying to convert div content in to image by this link https://codepedia.info/convert-html-to-image-in-jquery-div-or-table-to-jpg-png now I'm abele to convert div to image but problem is it was not download directly it asking 1st take preview after it give download help me to without viewing preview directly download.
code
...ANSWER
Answered 2022-Mar-10 at 17:17Please check this code, download it and run it on the browser. the download will not work directly from StackOverflow
QUESTION
ANSWER
Answered 2022-Feb-28 at 07:23On github there were a lot of issues related with SVG not downloading properly with html2canvas. I suspect these to be the issues. Solutions / workaround provided by users includes code modifications to the internal code. This is again hard to maintain further along. Also Firefox showed blank image when downloaded.
My best solution would be to use an alternative library like html-to-image. Within a few minutes everything seems to be working with this. (Even Firefox)
QUESTION
I use html2canvas to save a webpage as an image and i'd like to get the same results on a mobile and a PC. My webpage has a table that renders differently on a smaller screen (via CSS). I would like html2canvas to save the canvas as if the webpage is always on a PC screen. This way the table on the webpage will always look the same.
I currently have a workaround which temporarily sets the body width and viewport initial-scale to something larger before html2canvas runs, saves the webpage, then reverts back to the previous body width and viewport scale. The code I use is at the bottom of this post.
It mostly works but has a bad user experience because during the html2canvas operation the webpage will grow larger, pause for a bit (during the save) then revert back. Which doesn't look very good from the users point of view. Also, this doesn't always work for every mobile device.
Is there a better way to do this? Can I have some sort of off screen html that mirrors my on screen html but will always render as if its on a PC?
...ANSWER
Answered 2022-Feb-23 at 09:23Thanks to CBroe I did get it working using an off screen iframe. As follows:
QUESTION
I am a beginner in this field. just try to do a small project using vue.js. I wanted to give an option to users to download their Vue.js to-do list. I have had imported the jspdf library and Html2canvas. This is what I got as an output.but I want my output like this. (this is the output of my code in the local browser.try to find out my mistake here.
~my script method()here.
...ANSWER
Answered 2021-Dec-20 at 10:55I found the answer to my problem. and it's working fine,I could download the entire to-do list as pdf. but I have no idea wt went wrong on that js code. Just replace this code and give an id name for the part u wanted to get downloaded as pdf.
QUESTION
I am creating a resume-generating web app using react, html2canvas and jspdf. I want to get a live preview of the pdf when someone submits a form. I spent several hours looking for a solution to it. But bad luck. This site has a great example of what I want [ Here ]. Does anyone have an idea, Link?
...ANSWER
Answered 2022-Jan-03 at 12:52From your question I understand that you don't need jspdf for live preview as you just need to display image of the resume created using html2canvas.
Check the implementation here
jspdf is only required when you need to download it as pdf then you can convert the image generated by html2canvas to pdf using jspdf
Update
To hide the HTML elements and only show the canvas you can try something like this.
QUESTION
I've set up html2canvas so I can edit text and then download that as image and that works great, but the size is limited to the width of its container.
If I set up canvas width and height render becomes that size but it's black. What am I doing wrong?
Here is the JSfiddle with everything working but if you add width and height (currently commented), rendered pictured will get black.
JavaScript
...ANSWER
Answered 2022-Jan-20 at 20:06After creating a new element and setting the width and height attributes, the image is drawn on the canvas using the drawImage() method [1].
QUESTION
I am trying to use the persistent build cache feature provided by angular but look like its not working for me, I am trying the below command
...ANSWER
Answered 2022-Jan-20 at 18:32You seem to be using Windows cmd to run the command, and hence you are getting the error.
The command:
QUESTION
I am using html2canvas to convert the html to png, I am getting the following error:
...ANSWER
Answered 2022-Jan-09 at 20:06There is no proper way to do it now. html2canvas relay on window object attached to element. Because html2canvas already allow passing options related to defaultView through options object, the guard which throw error look like a bug because it should check that all necessary options are passed. So it would be better to open an issue there!
As a workaround if you trust HTML you can try to use hidden iframe but it still should be placed to the document
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