The Silent Revolution of the WebP Image Format

The Success of the WebP Image Format in Improving Website Efficiency

In a constantly evolving digital world, speed and efficiency are essential. Every millisecond counts, and website visitors have high expectations: they expect fast loading times and top-quality visual experiences. Faced with this scenario, developers and designers are challenged to innovate and optimize.

It is in this environment that WebP images begin to shine. This format, although not new, has been gradually gaining ground, promising to revolutionize the way we view and share visual content on the web.

If we go back to the creation of the web, we have transitioned from classic JPEG and PNG to more versatile and optimized formats. The WebP image format, developed by Google, aims to offer the best of both worlds: high image quality with significantly reduced file sizes. This compression efficiency allows web pages to load faster, improving the user experience and potentially increasing conversion rates for online businesses.

But the impact of WebP images is not limited to the user experience alone. For the digital marketing agency in Gijón, it represents a powerful tool in SEO optimization. Google, always with an eye on page speed and efficiency, positively values the use of optimized images, which translates into a better position in search results. Thus, WebP images are not just a format; they are a strategic ally in the vast universe of digital marketing.

What Are WebP Images?

WebP images are a graphic format that appeared in 2010 and supports both lossy and lossless compression. It is a format derived from the VP8 video standard, developed by On2 and acquired by Google in the same year.

Since then, Google has been developing this format, including new features. It is a file format that reduces the size of images and decreases their loading time. This is a great advantage because nowadays we use mobile devices to browse the internet, and if a file is too heavy, it will take longer to load the website.

Images in WebP format are 30% smaller than those using formats like JPG, JPEG, or PNG.

Features of WebP Images

WebP images, a format developed by Google, not only emerge as a response to the need for high-quality images on the web but also with a smaller file size. These characteristics make WebP a highly attractive format for webmasters, designers, and marketing professionals.

But what makes the WebP image format so special? Below, we will break down the most prominent features of this format:

  • Superior Compression:
    • Lossless: WebP offers lossless compression similar to PNG, but resulting files are up to 26% smaller in size.
    • Lossless: WebP offers lossless compression similar to PNG, but resulting files are up to 26% smaller in size.
  • Transparency Support: Like PNG, WebP supports transparency, also known as alpha channel. This allows overlaying WebP images on different backgrounds without leaving a “halo” around them.
  • Animation Performance: WebP can also be used for animations, serving as an alternative to GIFs. WebP animations have much smaller files and maintain superior quality compared to traditional GIFs.
  • Metadata: Like other image formats, WebP allows embedding metadata in the file, which can be useful for adding copyright information, geolocation, and more.
  • Configurability: WebP allows users to configure the compression level to achieve the perfect balance between file size and image quality, according to project needs.
  • Color Compatibility: It offers support for RGB color profiles and a wide range of bit depths, ensuring that images maintain vibrant and accurate colors.
  • Fast Decoding: WebP images are designed to be decoded quickly, meaning web pages using them load at a faster speed, improving the overall user experience.
  • Lower CPU Usage: Thanks to its efficient design, WebP uses less CPU for decoding compared to other formats, which can extend battery life on mobile devices.

However, not everything is rosy. A limitation faced by WebP images is compatibility. Although modern browsers like Chrome, Firefox, and Edge support WebP, there are still older or platform-specific browsers that do not. Therefore, it is essential to have a fallback strategy to ensure that content is accessible to all users.

In summary, the WebP image format presents a series of characteristics that position it as one of the most promising and efficient in today’s digital realm. Its adaptability, quality, and compression efficiency are unparalleled, making WebP an indispensable tool for any web professional looking to optimize their site for the best user experience and performance.

Advantages of Using WebP Images

Using this format in web designs can be very useful, mainly due to the advantages it offers, which we will detail below:

  • Reduced File Size: WebP provides superior compression, meaning files are smaller without sacrificing quality. This reduces loading time and thus improves the user experience.
  • Superior Image Quality: Despite its reduced size, WebP maintains excellent image quality. This is especially noticeable compared to JPEG, where compression often results in visible artifacts.
  • Support for Transparency: Like PNG, WebP images support transparency (alpha channel). This means they can be used on various backgrounds without visible borders, offering more design flexibility.
  • More Efficient Animations: WebP images can be animated, similar to GIFs, but with considerably smaller file sizes and superior image quality.
  • Fast Decoding: WebP is designed for faster decoding, resulting in shorter loading times and a better user experience.
  • SEO Optimization: Since page speed is a factor in SEO ranking, and WebP images help improve that speed, they can indirectly contribute to a better position in search results.
  • Lower Bandwidth Usage: For companies or individuals paying for bandwidth, the reduction in file size can lead to lower costs.
  • Better Performance on Mobile Devices: The reduced size and fast decoding are especially beneficial for mobile devices, which often have slower connections and less powerful hardware.
  • Google Support: Since WebP was developed by Google, it has the backing and active promotion of one of the world’s largest tech giants.
  • Flexibility: Users have the ability to adjust compression according to their needs, allowing for a customized balance between file size and image quality.

However, although the advantages are numerous, it is essential to weigh them against the limitations in terms of compatibility with some browsers and systems. But with the current trend toward a faster and more efficient web, the use of WebP images is clearly on the rise.

Disadvantages of Using WebP Images

Despite the advantages we can find when using this type of format, we must consider the most common disadvantages:

  • Limited Browser Compatibility: Although modern browsers like Chrome, Firefox, and Edge support WebP, there are still browsers, especially older versions, that do not support the format. This may require implementing alternative solutions to ensure display in all browsers.
  • Editing Tools: Not all popular image editing tools support or have full compatibility with WebP. Although major names like Adobe Photoshop have incorporated support for WebP, there may still be some specific features or plugins that are not fully compatible.
  • Conversion Required: If you already have an extensive bank of images in other formats, you will need to convert those images to WebP, which can be a time-consuming and resource-consuming process.
  • Variable Quality: Although WebP generally offers excellent image quality, lossy compression can, in some cases, result in visible artifacts or decreased quality in certain types of images, especially if the compression is too high.
  • Industry Adoption: Despite being backed by Google, the WebP format has not yet been universally adopted in all industries and sectors, which may limit its usefulness in certain contexts.
  • Incompatibility with Older Devices: Some older devices may not be compatible or may have trouble rendering WebP images, which can affect the user experience on those devices.
  • Difficulty for Direct Viewing: Not all operating systems have default image viewers that can open WebP files directly. Although this is changing, it can still be an inconvenience for some users.
  • Not Ideal for All Images: Although WebP is versatile, there are certain cases where other formats, such as PNG or JPEG, may be more appropriate depending on the specific content of the image or intended use.

What Is the Difference Between WebP and JPG Images?

The JPEG or JPG format is one of the most well-known, being a reference within the world of images. It is an image format that is used on many sites, and the main advantage of the JPEG format is that it can save a lot of storage space thanks to lossy compression.

However, to better understand the differences between WebP images and those in JPG format, let’s compare the main characteristics:

Origin and Development:

  • WebP: It is a modern image format developed by Google. It was specifically created for the web, aiming to provide efficient compression and improve page loading times.
  • JPG (Joint Photographic Group): It is an established image format that has existed for decades. It was developed by the group of the same name and is widely recognized and used worldwide.


  • WebP: It offers both lossy and lossless compression. In its lossy version, it can provide significantly better compression than JPG, with file sizes up to 34% smaller for similar visual quality.
  • JPG: It is fundamentally a lossy compression format. Although you can adjust the quality level (and thus the compression level), there will always be some loss of information in the image.

Image Quality:

  • WebP: It generally maintains excellent image quality, even at high compression levels, and has the advantage of offering lossless compression when needed.
  • JPG: The quality may decrease with compression, leading to visible artifacts in the image, especially in areas of high contrast.

Transparency Support:

  • WebP: It supports transparency (alpha channel), allowing for images with transparent backgrounds, similar to PNG.
  • JPG: It does not support transparency. If transparency is needed, designers typically resort to the PNG format.


  • WebP: It can be used for animations, serving as an alternative to GIFs, but with much smaller file sizes and better quality.
  • JPG: It does not support animations.


  • WebP: Although it is gaining traction, not all browsers or image editing software natively support WebP. However, major modern browsers have already adopted support for this format.
  • JPG: It is universally compatible and is supported by virtually all browsers, devices, and image editing software.

Predominant Use:

  • WebP: Ideal for websites and applications seeking efficient compression to improve loading times and user experience.
  • JPG: Often used for photographs and in applications where universal compatibility is essential.

How to Convert Images to WebP Format in WordPress?

You’re probably wondering how to convert an image format to WebP, and we don’t want to end the article without telling you how to do it.

WordPress has WebP images in its image library, but it does not convert them automatically. For this purpose, we have the EWWW Image Optimizer plugin. This plugin has 1 million active installations, in addition to the good ratings it has.

It is very easy to use, and to use this plugin, our WordPress version must be 5.6 or higher, so to use this tool, we must first ensure that it is the appropriate version.

Steps to Follow:

  1. 1. Install the EWWW Image Optimizer plugin.
  2. 2. Access the plugin settings.
  3. 3. Choose the Webp Conversion option and click continue.
  4. 4. Press the insert rewrite rules button.
  5. 5. Select Webp Rewriting by JS and click the save changes button.

This way, when we upload an image to the WordPress gallery, it will be automatically converted to Webp format.

Conclusion on Webp Images:

The way we present and deliver images has become a crucial factor for user experience. For decades, the JPEG format has been the cornerstone of photography and digital images. Its widespread compatibility and recognition have solidified its presence on the web. However, WebP images are emerging as a disruptive force in this space.

Developed by Google, WebP images offer a range of advantages that position them as the preferred choice for many modern applications. From their superior compression to their versatility in transparency and animation, WebP images are specifically designed to address the challenges and needs of the current web. They not only promise smaller file sizes but also significantly better quality retention.

But, like any innovation, WebP images have their set of challenges. Despite their undeniable advantages, compatibility remains a hurdle, with some browsers and tools still in the process of adaptation.

In summary, while JPEG has left an indelible mark on digital history, WebP images are paving the way for the future. For designers, developers, and marketing professionals, it is essential not only to understand the capabilities of WebP but also to adapt to this wave of change. WebP images are not just a passing trend but a necessary evolution in our ongoing quest for a faster, more efficient, and visually appealing web.

We would like to know if you have already started using WebP images in your projects. We would also be happy to address any questions you may have on this topic or any other, so feel free to leave a comment; we’re listening!

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