WebP vs JPG: Which Image Format Is Better?
WebP vs JPG each has its own advantages. When it comes to website speed, WebP is generally the better choice because it offers smaller file sizes without significantly sacrificing image quality. However, if browser compatibility is the main concern, JPG has an advantage because it is one of the most widely supported image formats.
So, which one should you use? Let’s take a closer look at the differences between WebP vs JPG and see which format is better for different purposes.
WebP vs JPG for Website Speed
The first aspect to consider when comparing WebP vs JPG is website performance. For websites, WebP is generally the better option. Its smaller file size, combined with good image quality, makes WebP more efficient than JPG in many situations.
To test the difference, we saved a full-resolution image measuring 5632 × 4329 pixels in both JPG and WebP formats.
The result?
The JPG version was approximately 1.7 MB, while the WebP version was only 668 KB.
This represents a significant reduction in file size while maintaining good visual quality.
For websites, this difference can be especially important. Smaller image files require less data to load, which can help pages load faster and provide a better experience for visitors.
If your goal is to improve your website’s SEO (Search Engine Optimization), using WebP can also be beneficial from a performance perspective. Faster-loading pages can contribute to a better user experience and support overall website performance.
This is one of the main reasons why WebP is often preferred when comparing WebP vs JPG for modern websites.
WebP vs JPG for Transparency
When it comes to transparency, WebP has another clear advantage over JPG.
WebP supports transparency, while JPG does not. This is because WebP can support an alpha channel, which allows transparent areas to be stored within an image.
JPG, on the other hand, stores standard RGB (red, green, and blue) color information without an additional alpha channel for transparency.
For example, if you remove the background from an image using photo-editing software and save it as JPG, the transparent area cannot remain transparent. It will typically be replaced with a solid color, such as white or black, depending on how the image is exported.
This makes WebP more flexible for logos, icons, illustrations, graphics, and other images that require transparent backgrounds.
Therefore, if transparency is an important requirement, WebP is the more suitable option in the WebP vs JPG comparison.
WebP vs JPG for Images With Gradients
Gradients refer to smooth transitions from one color to another, such as transitions from light to dark or from one color to another.
For images where smooth gradients are particularly important, JPG can sometimes produce better results than WebP, depending on the compression settings and image content.
JPG can preserve smooth color transitions effectively, especially when the image is saved with a relatively high quality setting. This can be useful for photographs, backgrounds, and other images that contain subtle changes in color.
With WebP, gradients can sometimes appear slightly less smooth at certain compression levels. You may notice visible transitions between colors that look somewhat abrupt, particularly when the image has been heavily compressed.
Because of this, JPG can still be a good option for certain images where maintaining smooth gradients is more important than achieving the smallest possible file size.
WebP vs JPG for Browser Compatibility
Another important factor when comparing WebP vs JPG is browser compatibility.
JPG has been around for much longer and is supported by virtually all modern web browsers, image-editing applications, operating systems, and other digital platforms.
WebP was introduced by Google in 2010 and initially had more limited support. However, browser support for WebP has improved significantly over the years, and today it is supported by virtually all major modern browsers.
This means that the browser compatibility gap between WebP and JPG is much smaller than it used to be.
Nevertheless, JPG remains a highly universal format and can still be useful when you need maximum compatibility with older software, systems, or specific workflows.
So, when choosing between WebP vs JPG, JPG can still be the safer option when compatibility is your highest priority.
My Personal Experience
As someone who works in the digital field, I find WebP very useful, especially when it comes to reducing image file sizes. Additionally, a compress WebP tool can be very helpful if file sizes are still too large (though this is less common than with JPEGs).
Uploading images in WebP can significantly reduce the amount of data required while still maintaining good image quality. This is particularly useful for websites where image size can affect loading performance.
However, I still use JPG in certain situations.
Sometimes, I simply don’t convert an image to WebP because the original JPG file is already small enough. For example, some of my JPG images are below 100 KB, which is already relatively lightweight for many website use cases.
JPG is also the format I commonly receive from cameras, image-editing software, and other sources. Converting every image individually can take additional time, especially when the original file is already optimized.
For that reason, I don’t think there is a single format that is always the winner.
WebP vs JPG: Which One Should You Use?
The best choice ultimately depends on your specific needs.
If your priority is website performance and smaller file sizes, WebP is generally the better choice. It can provide significant file-size savings while maintaining good image quality.
If you need maximum compatibility or already have a small, well-optimized JPG file, JPG can still be an excellent option.
In other words, the WebP vs JPG comparison is not necessarily about choosing one format and completely abandoning the other. Both formats have their own strengths and can be useful in different situations.
For modern websites, WebP is often the preferred choice for performance-focused image delivery. However, JPG remains a reliable and widely supported format that still has its place in today’s digital workflows.
The key is to choose the format based on the image, its purpose, the required quality, and the performance goals of your website.