Why Image Compression Is Crucial for Website Speed

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Why Image Compression Is Crucial for Website Speed

We live in a technologically advanced world where your website visitors expect your website to load within three seconds or they head over to a competitor website. Fast websites result in higher conversions with improved user experience (UX). An easy way to enhance your website speed is to compress your images.

What is Image Compression?

In order to store an image, it requires a set amount of memory, this is determined by the number of pixels and the dimensions, to name a few. Image compression reduces how much memory the image takes up. Compressed images reduce the storage impact on hard drives, speeding up the sending and uploading of images, boosting website performance. 

How Does the Size of Images Impact Page Loading Times?

When a user visits your website, their browsers requests and downloads all the necessary resources needed to display the page on their screen. This includes HTML files, JavaScript files, CSS style sheets, and images. Images tend to represent the largest part of the data used:

Why Image Compression Is Crucial for Website Speed
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Understanding Lossy and Lossless Compression

There are two types of image compression options; lossy and lossless:

Lossy Compression

Lossy compression will result in some image data being lost during the compression process. It minimises the bytes of the image, reducing the number of colours, converting it into a smaller indexed colour image. The benefit of lossy compression is that it is able to reduce the image considerably, reducing the file size. Once resized, the image cannot be restored due to the data loss. 

Lossless Compression

Lossless compression on the other hand, does not cause a loss of data, but rather rearranges the image, encoding the bytes, to preserve the quality of the image while reducing the file size. The file size will be larger than lossy compression, but you can restore the image once you have resized it. This option is great to retain the original high quality of the image. 

Do I Really Need to Compress My Images for Website Speed?

If you are wondering if you need to compress your images, we can give you two words on why you must; efficiency and speed. How much data your website stores directly impacts speed. When you compress your images, you reduce the file size, thereby taking up less storage space.

When you reduce the size of your images on your site, you reduce the data needed for the image to load every time a viewer visits your site. Compressing your images on your website has a significant effect on your page speed, which is essential in retaining user engagement, reducing bounce rates, and improving user experience.

Conclusion

As you probably know by now, user experience plays a vital role in your ranking in search results, along with being able to retain a visitor on your site, engaging with your contents. With large images, your website is slowed down, having a negative impact on user experience and your ranking in search results. When you compress your images, making the files smaller, they are able to load quicker, speeding up your page and improving user engagement and experience. Do you need help compressing your images and speeding up your website? Contact the Genie Crawl team now to find out more.

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