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May 27, 2023 pm 01:15 PM

HTML picture settings

With the continuous development of network technology, pictures play a very important role in web pages. How to correctly set images in HTML can make web pages more beautiful and attractive. This article will introduce how to set images in HTML, as well as precautions and practical tips.

1. How to set images in HTML

In HTML, you need to use the html picture settings tag to set images. Its basic structure is as follows:

Picture description

Among them, the src attribute specifies the path of the picture file ; The alt attribute defines the replacement text, which will be displayed when the image cannot be displayed; the title attribute is used to describe the image or add prompt information. For example, the following code shows a simple HTML page that contains an image.

<!DOCTYPE html>
<html>
<head>
    <title>HTML图片设置</title>
</head>
<body>
    <img src="/static/imghwm/default1.png"  data-src="img/nature.jpg"  class="lazy" alt="自然风光" title="美丽的大自然">
</body>
</html>

In the above code, we placed an image named "nature.jpg" in the local folder "img" and used the html picture settings tag to display it on the web page. picture. Open this HTML page in your browser and you will see a beautiful picture of natural scenery.

2. Precautions and practical tips

Use appropriate image format

Before setting the image, you need to consider which image format to use. Currently commonly used image formats include JPG, PNG and GIF. Among them, JPG is suitable for photos and complex images, while PNG and GIF are more suitable for icons and simple images. When choosing an image format, you need to make a selection based on the image's characteristics and usage scenarios to achieve better image quality and faster web page speed.

Pay attention to the size and dimensions of the image

When using images, you need to pay special attention to the size and dimensions of the image. If the image is too large, it will cause the webpage to load slowly and affect the user experience. Therefore, compression and cropping are needed to make the image size and dimensions suitable for web use.

Picture naming convention

When naming image files, you need to use meaningful naming conventions to facilitate subsequent management and maintenance. For example, you can name pictures using simple descriptive words or numbers.

Use relative paths

When setting images in HTML, you can use relative paths to specify image file paths. Relative paths can reduce the size of image files and are convenient. Transplantation and management. For example, in the above code, use the relative path "img/nature.jpg" to specify the path of the image.

Image Responsive Design

With the popularity of mobile devices, many websites have begun to use responsive design to adapt to different screen sizes. For images, you can also use responsive design to automatically adjust the size and proportion of images to adapt to different devices. For example, you can use the "max-width" attribute in CSS to set the maximum width of the image so that the image automatically scales according to the screen size.

3. Summary

Setting images in HTML is a very basic and important part of web design. Proper use of the html picture settings tag, paying attention to image format, size and naming conventions, and using techniques such as relative paths and responsive design can all make the web page display more beautiful and professional. I hope this article can help you understand more about the methods and precautions for setting images in HTML.

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