Adding Custom Logos to Personal Signatures in Web3 Metamask

As a web developer building applications using React, you are probably familiar with generating custom signatures for your users. However, a common issue arises when deploying your application to MetaMask on the Ethereum blockchain: the signature message displays an annoying letter “D” at the top of the text.

This issue can be easily resolved by adding a custom logo at the beginning of your signature message in Web3 Metamask. In this article, we will guide you through the steps to add a custom logo to your React application signatures.

Why Signatures Display as “D” and How to Fix It

In MetaMask, the default font used for signatures is Arial, which renders an annoying letter “D”. This issue occurs because the signature message is rendered with a fixed width that does not account for different font sizes. By adding a custom logo, we can create a more visually appealing signature that adapts to different screen resolutions and device types.

Step 1: Create a new React component for your logo

Let’s start by creating a new React component for our logo. We’ll call it Logo.js. In this file, add the following code:

import React from 'react';
const Logo = () => {
return 
Your Company Name
;
};
export default Logo;

This component will render a simple div element with the company name as its content.

Step 2: Embed your logo in your signature message

Next, we’ll modify our React application to embed the logo in the signature message. We can achieve this by adding a custom Logo.js component that wraps the original signature message and displays the logo on top of the text.

Let’s update our App.js file:

import React from 'react';
import Logo from './Logo';
function App() {
const handleSign = () => {
// Your app logic here...
};
return (

Sign your name
{/*
Now, let's wrap the original signature message in a custom component that adds the logo
*/}
);
}
export default App;

Step 3: Create a new SignatureMessage component

To display our signature message with the logo, we’ll create a separate component called SignatureMessage.js. In this file, add the following code:

import React from 'react';
const SignatureMessage = () => {
return (

Sign your name




 your original signature message here /}
 your app logic here... /}>Sign
);
};
export default SignatureMessage;

Step 4: Styling the Logo and Signature Message

Finally, we can customize the look of our logo and signature message by adding some basic styling. Add the following code to Logo.js:

import React from 'react';
import { styled } from 'styled-components';
const LogoContainer = styled.div
width: 100px;
text-align: center;
;
const Logo = () => {
return (
Your company name
);
};
export default Logo;

And add the following code to SignatureMessage.js:

“jsx

import React from 'react';

const SignatureMessageContainer = styled.div

width: 100%;

margin-top: 20px;

`;

const SignatureMessage = () => {

return (

Sign your name