html2canvas vs html-to-image vs dom-to-image
Image Generation from DOM Elements Comparison
3 Years
html2canvashtml-to-imagedom-to-imageSimilar Packages:
What's Image Generation from DOM Elements?

Image generation libraries from DOM elements allow developers to capture visual representations of HTML elements and convert them into image formats such as PNG or JPEG. These libraries are useful for creating screenshots of specific parts of a webpage, generating images from user-generated content, or exporting visual data for reports and presentations. They work by rendering the DOM elements onto a canvas element, which can then be converted into an image file. This functionality is valuable in applications like online design tools, data visualization platforms, and any web application that requires capturing or exporting visual content.

Package Weekly Downloads Trend
Github Stars Ranking
Stat Detail
Package
Downloads
Stars
Size
Issues
Publish
License
html2canvas4,147,591
31,5263.38 MB1,041-MIT
html-to-image1,004,628
6,665315 kB1837 months agoMIT
dom-to-image234,315
10,692-3338 years agoMIT
Feature Comparison: html2canvas vs html-to-image vs dom-to-image

Image Quality

  • html2canvas:

    html2canvas is known for its detailed rendering of DOM elements, capturing styles, images, and even shadows. However, the quality can be affected by factors such as cross-origin images and the complexity of the layout. It is one of the best options for capturing detailed screenshots, but it may require additional configuration for optimal results.

  • html-to-image:

    html-to-image offers high-quality image generation with better handling of SVGs and complex styles compared to dom-to-image. It preserves the visual fidelity of the elements, making it suitable for applications that require accurate representations of the original content.

  • dom-to-image:

    dom-to-image provides good image quality for most use cases, especially for simple elements and SVGs. However, the quality may vary depending on the complexity of the DOM and the styles applied. It is generally reliable for capturing images with inline styles and basic layouts.

Cross-Origin Support

  • html2canvas:

    html2canvas has more robust handling of cross-origin images, especially when combined with the allowTaint and useCORS options. It is recommended to set these options to true to improve cross-origin image rendering, but it still relies on the images being CORS-enabled for best results.

  • html-to-image:

    html-to-image also requires CORS-enabled images for proper rendering. It handles cross-origin content similarly to dom-to-image, making it important to ensure that the images used in the DOM have the correct CORS settings to avoid issues.

  • dom-to-image:

    dom-to-image has limited cross-origin support. It can handle images and elements from different origins if they have the appropriate CORS headers set. However, if the images are not CORS-enabled, they will be rendered as blank in the generated image.

Customization

  • html2canvas:

    html2canvas offers extensive customization options, including the ability to set backgrounds, adjust scaling, and control which elements are captured. It provides a high level of configurability, making it suitable for more complex scenarios where detailed control over the rendering process is required.

  • html-to-image:

    html-to-image provides a clean and simple API for customization, allowing developers to easily modify settings like background color, image quality, and more. It is designed to be straightforward while offering enough flexibility for most use cases.

  • dom-to-image:

    dom-to-image allows for some customization, such as setting background colors, specifying image formats, and handling SVG elements. However, it is relatively limited in terms of configurability compared to the other libraries.

Ease of Use: Code Examples

  • html2canvas:

    html2canvas is relatively easy to use, but its more complex nature may require some time to fully understand all its features and options. The library is well-documented, which aids in its usability. Example:

    import html2canvas from 'html2canvas';
    
    const element = document.getElementById('my-element');
    html2canvas(element)
        .then((canvas) => {
            const imgData = canvas.toDataURL('image/png');
            const link = document.createElement('a');
            link.href = imgData;
            link.download = 'screenshot.png';
            link.click();
        })
        .catch((error) => {
            console.error('Error capturing screenshot:', error);
        });
    
  • html-to-image:

    html-to-image is designed to be user-friendly, with a simple API that makes it easy to convert HTML elements to images. Its documentation is clear, which helps developers quickly understand how to use it. Example:

    import { toPng } from 'html-to-image';
    import { saveAs } from 'file-saver';
    
    const node = document.getElementById('my-node');
    toPng(node)
        .then((dataUrl) => {
            saveAs(dataUrl, 'my-image.png');
        })
        .catch((error) => {
            console.error('Error generating image:', error);
        });
    
  • dom-to-image:

    dom-to-image is easy to use and integrate into existing projects. Its API is straightforward, making it simple for developers to generate images from DOM elements with minimal setup. Example:

    import domtoimage from 'dom-to-image';
    import { saveAs } from 'file-saver';
    
    const node = document.getElementById('my-node');
    domtoimage.toBlob(node)
        .then((blob) => {
            saveAs(blob, 'my-image.png');
        })
        .catch((error) => {
            console.error('Error generating image:', error);
        });
    
How to Choose: html2canvas vs html-to-image vs dom-to-image
  • html2canvas:

    Choose html2canvas if you need a comprehensive solution for capturing screenshots of entire web pages or specific elements. It renders the DOM elements onto a canvas, capturing styles, images, and even complex layouts. It is suitable for applications that require detailed and accurate representations of the visual content, making it ideal for screenshot tools, design applications, and more.

  • html-to-image:

    Choose html-to-image if you want a modern and actively maintained library that focuses on converting HTML elements to images with minimal configuration. It provides a clean API, supports SVG, and allows for customization of the image generation process. It is a good choice for projects that require a straightforward solution with good performance and reliability.

  • dom-to-image:

    Choose dom-to-image if you need a simple and lightweight solution for generating images from DOM nodes. It supports basic features like image generation from HTML elements, including support for SVG and inline styles. It is easy to use and integrates well with existing projects without much overhead.

README for html2canvas

html2canvas

Homepage | Downloads | Questions

Gitter CI NPM Downloads NPM Version

JavaScript HTML renderer

The script allows you to take "screenshots" of webpages or parts of it, directly on the users browser. The screenshot is based on the DOM and as such may not be 100% accurate to the real representation as it does not make an actual screenshot, but builds the screenshot based on the information available on the page.

How does it work?

The script renders the current page as a canvas image, by reading the DOM and the different styles applied to the elements.

It does not require any rendering from the server, as the whole image is created on the client's browser. However, as it is heavily dependent on the browser, this library is not suitable to be used in nodejs. It doesn't magically circumvent any browser content policy restrictions either, so rendering cross-origin content will require a proxy to get the content to the same origin.

The script is still in a very experimental state, so I don't recommend using it in a production environment nor start building applications with it yet, as there will be still major changes made.

Browser compatibility

The library should work fine on the following browsers (with Promise polyfill):

  • Firefox 3.5+
  • Google Chrome
  • Opera 12+
  • IE9+
  • Safari 6+

As each CSS property needs to be manually built to be supported, there are a number of properties that are not yet supported.

Usage

The html2canvas library utilizes Promises and expects them to be available in the global context. If you wish to support older browsers that do not natively support Promises, please include a polyfill such as es6-promise before including html2canvas.

To render an element with html2canvas, simply call: html2canvas(element[, options]);

The function returns a Promise containing the <canvas> element. Simply add a promise fulfillment handler to the promise using then:

html2canvas(document.body).then(function(canvas) {
    document.body.appendChild(canvas);
});

Building

You can download ready builds here.

Clone git repository:

$ git clone git://github.com/niklasvh/html2canvas.git

Install dependencies:

$ npm install

Build browser bundle

$ npm run build

Examples

For more information and examples, please visit the homepage or try the test console.

Contributing

If you wish to contribute to the project, please send the pull requests to the develop branch. Before submitting any changes, try and test that the changes work with all the support browsers. If some CSS property isn't supported or is incomplete, please create appropriate tests for it as well before submitting any code changes.