Build Your Own Case Converter Plugin Like ConvertCase.net

Build Your Own Case Converter Plugin Like ConvertCase.net

Web_Script
February 11, 2025

Create a WordPress Plugin & Monetize Your Own Text Conversion Tool

Looking to create a tool like ConvertCase.net and make money from it? In this guide, I鈥檒l show you how you can build your own text case converter using a WordPress plugin, how the code works, and ways to monetize your tool.

What is a Text Case Converter Plugin?

A Text Case Converter Plugin is a simple online tool that lets users transform text into different formats like:

  • Sentence Case
  • lower case
  • UPPER CASE
  • Capitalized Case
  • Title Case
  • InVeRtEd CaSe

Websites like ConvertCase.net generate thousands of visits per month. You can create a similar tool using WordPress and monetize it through ads, affiliate marketing, or premium features.

How This Plugin Works

The WordPress plugin is built using PHP, HTML, JavaScript, and CSS. It adds a shortcode that can be embedded on any page. Here鈥檚 how it works:

1. Plugin Header and Setup

The plugin starts with a header defining the plugin name, author, and version:

<?php
/*
Plugin Name: Text Case Converter
Plugin URI: https://yourwebsite.com
Description: A simple text case converter tool that works with Elementor using a shortcode.
Version: 1.0
Author: Your Name
Author URI: https://yourwebsite.com
License: GPL2
*/
?>

This header is required for WordPress to recognize the plugin.

2. Creating the Shortcode

The plugin uses a shortcode function to display the converter interface:

function text_case_converter_function() {
ob_start(); ?>
<div class="text-case-converter-container">
<h2>Text Case Converter</h2>
<textarea id="textInput" placeholder="Type or paste your content here..."></textarea>
<div class="button-container">
<button onclick="convertCase('sentence')">Sentence Case</button>
<button onclick="convertCase('lower')">lower case</button>
<button onclick="convertCase('upper')">UPPER CASE</button>
<button onclick="convertCase('capitalize')">Capitalized Case</button>
<button onclick="convertCase('title')">Title Case</button>
<button onclick="convertCase('inverted')">Inverted Case</button>
</div>
<textarea id="outputText" readonly></textarea>
</div>
<?php
return ob_get_clean();
}
add_shortcode('text_case_converter', 'text_case_converter_function');

3. JavaScript for Text Conversion

This JavaScript function handles the text transformation:

<script>
function convertCase(type) {
let inputText = document.getElementById("textInput").value;
let outputText = "";switch (type) {
case “sentence”:
outputText = inputText.charAt(0).toUpperCase() + inputText.slice(1).toLowerCase();
break;
case “lower”:
outputText = inputText.toLowerCase();
break;
case “upper”:
outputText = inputText.toUpperCase();
break;
case “capitalize”:
outputText = inputText.replace(/\b\w/g, char => char.toUpperCase());
break;
case “title”:
outputText = inputText.replace(/\w\S*/g, function(word) {
return word.charAt(0).toUpperCase() + word.substr(1).toLowerCase();
});
break;
case “inverted”:
outputText = inputText.split(“”).map(char =>
char === char.toUpperCase() ? char.toLowerCase() : char.toUpperCase()
).join(“”);
break;
}document.getElementById(“outputText”).value = outputText;
}
</script>

馃敼 This script detects the type of case transformation and applies the necessary formatting.

4. Styling the Plugin

To make the interface user-friendly, the plugin uses CSS for styling:

<style>
.text-case-converter-container {
max-width: 500px;
margin: auto;
text-align: center;
}
textarea {
width: 100%;
height: 100px;
margin: 10px 0;
padding: 10px;
}
button {
margin: 5px;
padding: 10px;
cursor: pointer;
}
</style>

This ensures a clean and responsive design.

How to Monetize Your Text Case Converter Plugin

Once you have built your case converter tool, here are some ways to make money from it:

1. Display Google Ads

  • Sign up for Google AdSense and place ads on your tool page.
  • Websites like ConvertCase.net earn from display ads when users visit.

2. Sell Premium Features

  • Offer an ad-free experience for a one-time fee or subscription.
  • Add extra tools like bulk text conversion, file upload support, or AI-powered formatting.

3. Affiliate Marketing

  • Recommend writing tools like Grammarly, ProWritingAid, or Jasper AI with affiliate links.

4. Offer Custom Services

  • Provide SEO-friendly content formatting services.
  • Sell access to API-based bulk text conversion for developers.

5. Sell a SaaS Subscription

  • Create a Pro version where users can store and manage text formatting.
  • Charge a monthly fee for premium users.

How to Create a Website Like ConvertCase.net

If you want to go beyond a WordPress plugin and build a full-fledged website, here鈥檚 what you need:

1. Domain & Hosting

  • Buy a domain like TextFormatter.com.
  • Use hosting like Bluehost, SiteGround, or Cloudways.

2. Use WordPress or Code from Scratch

  • Install WordPress and use the plugin above.
  • Or build a custom PHP/React app.

3. Optimize for SEO

  • Use SEO-friendly URLs and keyword-rich content.
  • Target terms like “Text Case Converter,” “Uppercase to lowercase,” and “Convert Case Online”.

4. Promote Your Tool

  • Run Google Ads & Facebook Ads.
  • Share on Reddit, Twitter, and SEO forums.
  • Create a YouTube demo showcasing the tool.

Final Thoughts

Building a text case converter tool is an easy way to start an online business. You can create a WordPress plugin, monetize it, and scale into a full website like ConvertCase.net.

Use our Free Online Text Case Converter聽

Tags:

Leave a comment