What is the best way to maintain a Photo's Aspect Ratio using just HTML and CSS?

Although I've been a bit slow to get on board with Responsive Design, I finally understand how it works. However, there's one specific issue that has stumped me - something I don't recall ever encountering in my 10 years of website development.

I have a large photo sized at 1920px X 1080px. I'm hesitant to resize it because I know users have larger screens for browsing. The current challenge I face is that the image is horizontally centered on the page (right below the main navigation at the top), and despite the rest of my site adjusting properly to different screen sizes, the photo loses its aspect ratio as the window size changes.

How can I ensure that the image maintains its aspect ratio as the site scales to various resolutions?

I would prefer a solution without using JavaScript since this particular site needs to be JavaScript-free. Otherwise, I would simply do some calculations and adjust the image size manually.

htmlimagecss

Answer №1

To maintain the correct aspect ratio of an image, you need to either specify the height or width. Images are considered inline-block elements, allowing us to adjust their dimensions accordingly.

Consider using the following CSS:

img {
    width: 100%;
    height: auto;
}

Check out this example for a demonstration. Feel free to resize the window or canvas to see how it works.

Answer №2

To ensure your image fits within the screen viewport, specify only the width and set a maximum width value. The height will automatically adjust based on the aspect ratio.

img {
    width: 100%;
    max-width: 100%;
    height: auto;
}

Answer №3

Allow the browser or your device (such as a mobile phone or computer screen) to determine the size of the image.

img {
width: 100%;
height: auto;
}

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