How to convert HTML pages into images using PHP
In web development, it is often necessary to convert HTML pages into images for functions such as generating verification codes and email screenshots. As a very popular server scripting language, PHP can also convert HTML to images. This article will explain how to use PHP to convert HTML pages into images.
- Understand the principle of converting HTML to pictures
Before introducing the specific implementation, let’s briefly understand the principle of converting HTML to pictures. A common way is to use a third-party library to render the HTML page into an image, and then output the image to the browser or save it as a file.
- Install necessary extensions
PHP does not natively support converting HTML into images and needs to rely on third-party extensions. Among the more popular ones are wkhtmltoimage
, dompdf
, phantomjs
, etc.
Taking wkhtmltoimage
as an example, you need to install the wkhtmltox
library on the server first.
sudo apt-get update sudo apt-get install wkhtmltopdf
Then install the PHP extension php-wkhtmltox
.
sudo apt-get install php-wkhtmltox
- Use
wkhtmltoimage
extension
After installing the wkhtmltoimage
extension, you can use the following code to convert the HTML page into pictures.
<?php $command = 'wkhtmltoimage http://www.baidu.com ./baidu.jpg'; $result = shell_exec($command);
In the above code, the wkhtmltoimage
command renders the http://www.baidu.com
page into an image and saves it as ./baidu. jpg
file.
In addition to converting images from web addresses, you can also convert local HTML files into images:
<?php $command = 'wkhtmltoimage ./local.html ./local.jpg'; $result = shell_exec($command);
- Use
dompdf
extension
dompdf
is a PHP extension that converts HTML to PDF. It can also convert HTML to images.
Install the dompdf
extension.
composer require dompdf/dompdf
Use the following code to convert HTML pages into images.
<?php use Dompdf\Dompdf; $html = file_get_contents('http://www.baidu.com'); $dompdf = new Dompdf(); $dompdf->loadHtml($html); $dompdf->render(); $file = './baidu.png'; file_put_contents($file, $dompdf->output());
In the above code, use file_get_contents
to get the page HTML content, and then use Dompdf
to render it into an image on the server side and save it locally.
- Use
phantomjs
Extension
Similar to dompdf
, phantomjs
is also a tool that can convert HTML pages into Tools for rendering into images. Install the phantomjs
library.
sudo apt-get install phantomjs
Then use the following code to convert the HTML page into an image.
<?php $html = file_get_contents('http://www.baidu.com'); $command = 'phantomjs rasterize.js ' . escapeshellarg($html) . ' ./baidu.png 800px*600px'; $result = shell_exec($command);
In the above code, the phantomjs
command uses the rasterize.js
script to complete page rendering. Among them, the first parameter is the HTML content to be rendered, the second parameter is the output file, and the third parameter is the size of the output image.
- Summary
This article describes how to use PHP to convert HTML pages into images. We can use extensions such as wkhtmltoimage
, dompdf
or phantomjs
to achieve this functionality. When using different extensions, you also need to pay attention to the installation of its dependent environment and the use of related libraries.
The above is the detailed content of How to convert HTML pages into images using PHP. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The article discusses OWASP Top 10 vulnerabilities in PHP and mitigation strategies. Key issues include injection, broken authentication, and XSS, with recommended tools for monitoring and securing PHP applications.

PHP 8's JIT compilation enhances performance by compiling frequently executed code into machine code, benefiting applications with heavy computations and reducing execution times.

The article discusses securing PHP file uploads to prevent vulnerabilities like code injection. It focuses on file type validation, secure storage, and error handling to enhance application security.

The article discusses symmetric and asymmetric encryption in PHP, comparing their suitability, performance, and security differences. Symmetric encryption is faster and suited for bulk data, while asymmetric is used for secure key exchange.

The article discusses implementing robust authentication and authorization in PHP to prevent unauthorized access, detailing best practices and recommending security-enhancing tools.

The article discusses strategies for implementing API rate limiting in PHP, including algorithms like Token Bucket and Leaky Bucket, and using libraries like symfony/rate-limiter. It also covers monitoring, dynamically adjusting rate limits, and hand

The article discusses strategies to prevent CSRF attacks in PHP, including using CSRF tokens, Same-Site cookies, and proper session management.

Article discusses best practices for PHP input validation to enhance security, focusing on techniques like using built-in functions, whitelist approach, and server-side validation.
