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WebP Alpha Channel Filler

World's Simplest WebP Tool

This free online tool lets you fill the alpha channel in a WebP image. Just load your WebP image with transparency in the input editor, and you'll instantly get a WebP image with a filled alpha channel in the output editor. In the options, you can choose the filling method (solid color or gradient) and adjust the fill colors. Additionally, for the gradient fill method, you can switch between a linear color gradient and a radial color gradient and adjust its direction, starting point, and spread radius. Created by team Browserling.

WebP Alpha Channel Filler

World's Simplest WebP Tool

This free online tool lets you fill the alpha channel in a WebP image. Just load your WebP image with transparency in the input editor, and you'll instantly get a WebP image with a filled alpha channel in the output editor. In the options, you can choose the filling method (solid color or gradient) and adjust the fill colors. Additionally, for the gradient fill method, you can switch between a linear color gradient and a radial color gradient and adjust its direction, starting point, and spread radius. Created by team Browserling.

᠎᠎᠎          Tool Options

Alpha Channel Fill Method

Use a single color to
fill the alpha pixels.
Use multiple colors to
fill the alpha pixels.
First color.
Second color.
Third color.
Fourth color.

Gradient Type

Choose the direction of the
linear gradient's color change.
Choose the origin point
of the radial gradient.
Define the radius of the
radial color gradient.

What Is a WebP Alpha Channel Filler?

With this online tool, you can fill the alpha channel of your WebP images. Alpha channel controls the WebP pixel transparency and determines which parts of the image are non-transparent/opaque and which are partially or fully transparent. This tool finds all alpha channel pixels in the given WebP and fills them with opaque pixels. It offers two main methods for filling the alpha channel: solid color fill and gradient fill. When using the solid color fill method, you can specify the color value that will replace all alpha pixels in the WebP. When using the gradient fill, you can further choose between linear or radial gradient types and specify two to four gradient colors. The linear gradient transitions colors along a line directed from top to bottom, bottom to top, left to right, or right to left. The radial gradient originates from the center point, top left corner, top right corner, bottom left corner, or bottom right corner. Additionally, you can define the radius of the radial gradient, which allows you to adjust the spread distance of the gradient from the origin point. Webp-abulous!

What Is a WebP Alpha Channel Filler?

With this online tool, you can fill the alpha channel of your WebP images. Alpha channel controls the WebP pixel transparency and determines which parts of the image are non-transparent/opaque and which are partially or fully transparent. This tool finds all alpha channel pixels in the given WebP and fills them with opaque pixels. It offers two main methods for filling the alpha channel: solid color fill and gradient fill. When using the solid color fill method, you can specify the color value that will replace all alpha pixels in the WebP. When using the gradient fill, you can further choose between linear or radial gradient types and specify two to four gradient colors. The linear gradient transitions colors along a line directed from top to bottom, bottom to top, left to right, or right to left. The radial gradient originates from the center point, top left corner, top right corner, bottom left corner, or bottom right corner. Additionally, you can define the radius of the radial gradient, which allows you to adjust the spread distance of the gradient from the origin point. Webp-abulous!


WebP Alpha Channel Filler Examples

Click to try!
click me

Fill Alpha Channel with Solid Color

In this example, we use a solid color fill to replace the transparent background of a WebP image with an opaque color. We choose the color "peachpuff" and fill all pixels where the alpha channel is less than 1. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Use a single color to
fill the alpha pixels.
click me

Fill Alpha Channel with Linear Gradient

In this example, we use a linear gradient fill to remove the alpha channel in a WebP sticker of a pink rose. We direct the gradient along a vertical line from the top to the bottom and make it change the color from light blue (#74ebd5) to lavender (#acb6e5). (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Use multiple colors to
fill the alpha pixels.
First color.
Second color.
Third color.
Fourth color.
Choose the direction of the
linear gradient's color change.
click me

Fill Alpha Channel with Radial Gradient

In this example, we load a WebP photo of an owl on a transparent background. To eliminate this transparency, we fill the alpha channel pixels with a colorful radial gradient. We set the gradient's origin at the center of the image and specify three shades of green for the gradient transition – rgb(70, 182, 70), rgb(51, 105, 51), and rgb(1, 28, 1). These colors are spread out within a radius of 450 pixels. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Use multiple colors to
fill the alpha pixels.
First color.
Second color.
Third color.
Fourth color.
Choose the origin point
of the radial gradient.
Define the radius of the
radial color gradient.

All WebP Tools

Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!
Quickly convert a non-transparent WebP to a transparent WebP.
Quickly fill transparent areas in a WebP image with a specific color.
Quickly change one color to another in a WebP image.
Quickly make a part of a WebP image semi-transparent.
Quickly add a background to a transparent WebP image.
Quickly remove the background from a WebP image.
Quickly remove the green or blue screen from a WebP image.
Quickly add a border around a WebP image.
Quickly remove a border surrounding a WebP image.
Quickly cut out a rectangular or oval area from a WebP image.
Quickly pixelate an area of a WebP image.
Quickly blur an area of a WebP image.
Quickly sharpen an area of a WebP image.
Quickly change the width and height of a WebP image.
Quickly interactively rotate a WebP image by any angle.
Quickly create multiple copies of the same WebP image.
Quickly remove a specific color from a WebP image.
Quickly convert a full-color WebP image to a grayscale format.
Quickly convert a colorful WebP to a black and white WebP.
Quickly invert colors in an area of a WebP image.
Quickly decrease the color count in a WebP image.
Quickly increase or decrease the quality of a WebP image.
Quickly optimize the file size and quality of a WebP image.
Quickly compress a WebP image and make it smaller in size.
Quickly convert printed text into a WebP image.
Quickly add a text label to a WebP image.
Quickly remove transparency and translucency from a WebP image.
Quickly visualize the WebP transparency via an alpha mask.
Quickly extract the alpha channel from a WebP image.
Quickly fill the alpha channel in a WebP image.
Quickly replace the alpha channel in a WebP image.
Quickly remove the alpha channel from a WebP image.
Quickly add artifacts and distortions to a WebP image.
Quickly find the size of a WebP image in bytes and kilobytes.
Quickly check the width and height of a WebP image.
Quickly generate a blank WebP image of any size and color.
Quickly generate a random WebP image with random colors.
Quickly find the dominant colors of a WebP image.
Quickly find the color of a single pixel in a WebP image.
Quickly extract objects based on their color from a WebP image.
Quickly round the corners of a WebP image.
Quickly convert a horizontal WebP image to a vertical WebP image.
Quickly convert a vertical WebP image to a horizontal WebP image.
Quickly flip a WebP image horizontally.
Quickly flip a WebP image vertically.
Quickly convert a PNG image to a WebP image.
Quickly convert a WebP image to a PNG image.
Quickly convert a JPG image to a WebP image.
Quickly convert a WebP image to a JPG image.
Quickly convert a GIF image to a WebP image.
Quickly convert a WebP image to a GIF image.
Quickly convert a WebP image into a hex code sequence.
Quickly convert a hex sequence into a WebP image.
Quickly convert a WebP image into a base64-encoded string.
Quickly convert a base64-encoded string into a WebP image.

Coming Soon

These WebP tools are on the way!
WebP Editor

Edit WebP images in your browser.

Convert WebP to APNG

Convert a WebP animation to an APNG animation.

Convert APNG to WebP

Convert an APNG animation to a WebP animation.

Convert WebP to GIF

Convert a WebP animation to a GIF animation.

Convert GIF to WebP

Convert a GIF animation to a WebP animation.

Extract WebP Frames

Extract all frames from a WebP animation.

Convert WebP to MP4

Convert a WebP animation to an MP4 video.

Convert MP4 to WebP

Convert an MP4 video to a WebP animation.

Convert WebP to WebM

Convert a WebP animation to a WebM video.

Convert WebM to WebP

Convert a WebM video to a WebP animation.

Compare WebP Images

Find the difference between two or more WebP images.

Compress WebP

Reduce the file size of a WebP image.

View WebP Metadata

View the metadata information of a WebP image.

Remove WebP Metadata

Remove all metadata information from a WebP image.

Edit WebP Metadata

Edit the metadata information of a WebP image.

Play WebP

Play WebP animations frame by frame.

Extract WebP Frames

Extract one or more frames from a WebP animation.

Convert Sprite Sheet to WebP

Create a WebP animation from a sprite sheet.

Convert WebP to Sprite Sheet

Create a sprite sheet from a WebP animation.

WebP Viewer

View WebP images and in your browser.


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Created with love by

We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling we love to make people's lives easier, so we created this collection of WebP editing tools. Our tools have the simplest user interface that doesn't require advanced computer skills and they are used by millions of people every month. Our WebP tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!

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Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!