How to Upload WebP Images in WordPress?

WebP, short for WebP image format, is a new image format created by Google in 2010. The WebP format offers superior lossless and lossy compression for images on the web.

Why use WebP?

Lossless and lossy compression

A WebP image is 28% smaller in size compared to PNGs. On average, it’s 25% smaller than JPEGs. And because WebP offers both lossless and lossy compression, you don’t have to worry about having a high-quality image with large file size.

Support for transparency

If your image has transparency, you’ll be happy to know that WebP supports transparency. This means that any pixel that is transparent in your original image will remain transparent when using the WebP format instead of JPEG or PNG.

Image quality

With 30% more compression potential than JPEGs and 5x more than PNGs (25% compared to 75%), it’s no wonder why Google started using this image format on their search engine results page (SERPs). Unlike PNGs which support various colour depths, WebP formats images only in 8-bit colour depth (256 colours).

What are WebP Images?

WebP is a new image format from Google that can reduce the file size of images on the web. The technology is open source and royalty-free, so it’s available for anyone to use. Just because it’s royalty-free doesn’t mean you don’t have to pay for anything, though. You’ll need to install special software on your computer in order to create WebP images, but there are also plugins available that will make them automatically when you upload a new photo.

Google has been encouraging website owners to use it. It’s a file format that supports both lossless and lossy compression, which generally results in smaller file sizes than other popular formats such as JPG and PNG. WebP images are supported by Google, Twitter, Facebook,, and more.

How does WebP Image Format work?

WebP lossless images are a type of raster graphics format that use lossy compression to encode image data. They work much like JPEGs, but they also support transparency and animation which are not supported by JPEGs.

WebP lossy images are a type of raster graphics format that use lossy compression to encode image data. They work much like JPEGs, but they also support transparency which is not supported by JPEGs.

WebP uses a container based on RIFF. Any WebP file contains the following chunks:

Metadata and colour palette chunk(s) Chunk(s) containing image data

The metadata chunk contains metadata such as width, height and colour space information. The colour palette chunk(s) contains an index of colours used in the image with optional alpha information for each colour entry.

WebP lossless images are 24% smaller in size compared to PNG images at equivalent SSIM index. The main reason for this is that WebP lossless images support an alpha channel, which is not supported by PNGs. Because alpha transparency information is stored in only 2 bytes instead of 8 bytes, WebP does not need to reserve as much space for transparency information.

Another reason for the smaller size of lossless WebP images is that WebP stores 24-bit RGB colour in only 32 bits instead of 48 bits as in BMP, PNG, and GIF. In addition, WebP lossless images store palette images (8-bit or 24-bit) in only 24 bits instead of 32 bits as in BMP, PNG, and GIF.

Why Should We Use WebP Image Formats in Websites instead of JPEG and PNG?

If you have fast loading pages then visitors are more likely to return to your site and share it with others. Also, Google has stated that they will reward fast-loading sites in their search engine results page (SERPs). So if you want to get more traffic from Google, you need to optimize your site for speed when it comes to images especially.

WebP images are unique in that they offer both lossless and lossy compression. Till now, we have been using JPEG and PNG formats for displaying images on the web. While JPEG compression is a lossy compression technique, which means that it permanently discards some data to achieve a better compression ratio, PNG does not involve any loss of information. On the other hand, WebP is based on the VP8 video format and uses a combination of lossy and lossless techniques to compress the image data.

Benefits of Using WebP Format Images:

WebP is a new image format that is supported by almost all the major browsers. It has a smaller file size with the same quality as JPEG and PNG images.

When we are creating websites, responsive design has always been the most important factor to consider. We need to make sure that our website will look good on all types of devices with different resolutions and screen sizes. This is why it is vital for us to optimize our images before uploading them to our website. We should also make sure that the size of these images are small enough so that pages load quickly.

WebP has several advantages over JPEG and PNG formats. These are explained in detail below:

File Size: WebP images are smaller than JPEG and PNG images. WebP uses a lossy compression algorithm, which means it throws away some information while encoding an image, resulting in a much smaller size than other lossless or lossy formats like PNG or JPEG.

Time to First Byte: WebP images show up faster because they take less time to start loading, resulting in faster page load times. This is one of the main reasons why you should use this format in your WordPress website.

Image Quality: WebP also provides higher quality images than JPEG and PNG formats, at almost half the file size. It supports 24-bit RGB colour and 8-bit alpha channel transparency. It also supports animation (animated WebP), so it can be used for static images as well as animated GIFs (WebM).

Additionally, WebP supports lossless compression, which can further reduce the file size if required without losing any data from the original image.

The file Size difference between PNG, JPG and WebP (When PNG, JPG converted to WebP Format)

The big difference between PNG and WebP is the file size.

The images that are saved as WebP have a smaller file size than PNG. Because of this, it is a lot faster to load on the website. There is less data transfer and also it reduces the time for your website to load.

The main benefit of WebP over other formats is that it can reduce the file size without affecting the quality of the image in any way. It is lossless compression which means that your image will not be affected in terms of quality after it has been converted to WebP. So, you will get a crisp clear image without compromising on its quality.

WebP images can be much smaller than JPEG or PNG files. If your site will primarily serve images over the web, you may benefit from using WebP instead of a different format. This article will show you how to use WebP on WordPress when uploading a new image.*Before we begin, I’ll note that this is an experimental feature that is only available in Chrome and Opera at the moment. The only reason I am covering it here is that it might be useful to our audience.

How to Convert Any Format(PNG, JPEG, JPG, etc.) into WebP Format

Blogger SEO Tools allows you to compress your PNGs and convert them into WebP format while keeping the quality intact.

To do that, follow these steps: Step 1: Click the ‘Choose File’ button and then select the PNG or JPEG file you want to convert to WebP.

Step 2: Click on the ‘Convert’ button to proceed with the WebP conversion process. Once the conversion is done, Webp Converted File Will Download Automatically On Your Device.

How to Upload WebP Images in WordPress Using Plugin?

When PNG images are converted to WebP their file size reduces by ~35% and thus improving page load speeds.

How to Upload WebP Images in WordPress:

Uploading WebP images in WordPress might not be like uploading PNG or JPG images as it needs a plugin for that purpose. The plugin I am using for this purpose is called “WebP for Media”. It’s a very useful plugin that enables users to upload, edit and manage WebP files in the media library of WordPress.

Here are the steps to do so:

First of all, install “WebP for Media” from WordPress Repository and activate it.

This Plugin will automatically add support to the media library of WordPress to handle WebP images.

After enabling this Plugin, You Can Upload converted webp Images To WordPress.

Also, You Can Convert all existing images with just one click! do to this go to settings>webp converter Option. This tool uses the WordPress REST API by downloading addresses of all images and converting all files gradually. This is a process that may take a few or more than ten minutes depending on the number of files. During this process, please do not close your browser window.

This operation should be performed only once after installing the plugin. New images from the Media Library will be converted automatically. For other images, e.g. from the /themes or /uploads directory that are not from the Media Library, you must start manual conversion after adding new images.

This plugin is still in development but for now, it should work pretty well for what we need.

How WebP Images Improves Your Website SEO?

SEO is a game of numbers, and to get higher rankings on Google you need to have a good number of unique visitors to your website. The more search engine optimization strategies that you can apply to your website, the better chance you have at increasing these visitor numbers. One way to improve your SEO is through the use of image optimization.

Trying to create an eye-catching image for use on your website can be very time-consuming. Not only do you need to ensure that the image is sharp and clear, but it needs to be formatted in a way that allows it to display properly across all browsers. Many people choose to outsource their pictures or images because they simply do not have the time or skill needed. Another option that many people choose is the use of vector graphics. However, while they may be easy to edit and create by anyone who has basic computer software, one drawback of vector graphics is that they tend not to load as quickly in browsers as other images do.

Using WebP images on your website can solve this problem for you. These WebP images are small in size but are still able to retain a high level of quality once they are loaded onto your website.

Till today, many websites do not use WebP Images because of two reasons – one is that it can be used only in Chrome and the second is that it is not widely supported yet. But if you want to improve your website SEO ranking significantly then you should start using this format.


Adding WebP images to your WordPress posts and pages is a great way to boost load times and performance, not only for your site’s visitors but also for their fellow authors on the WordPress platform! By switching out just a few of your images with WebP versions, you’re sure to see a positive difference both in image quality and speed of delivery.

Leave a Comment