General

Application That Saves Text as File in JavaScript


Why Every Developer Should Build This Utility

In an era where productivity tools dominate, a lightweight text-to-file converter app solves a universal problem: quickly saving digital content without bloat. Whether for notes, code snippets, or temporary drafts, this project demonstrates how to create a no-frills web app that empowers users to save text directly as .txt files—all within their browser.


Features That Make This App Shine

Instant File Generation: Convert text to downloadable .txt files in one click.
Custom Filename Control: Users can name files or use a default.
Responsive Design: Works seamlessly on desktop and mobile.
Zero Backend Dependency: Pure frontend magic with HTML, CSS, and JavaScript.
One-Click Reset: Clear all inputs instantly for fresh starts.


How It Works (Under the Hood)

1. User-Friendly Interface

The app greets users with a minimalist design:

  • A filename input field (optional)
  • A spacious textarea for content
  • Prominent “Save as .TXT” and “Clear All” buttons

2. Smart JavaScript Logic

Behind the scenes, the app leverages the Blob API to convert text into downloadable files. Key steps include:

  1. Capturing user input and filename
  2. Validating content to prevent empty downloads
  3. Dynamically creating and triggering a hidden download link

3. Error Handling

Built-in checks ensure users can’t download empty files, improving the experience.


Who Is This App For?

  • Developers: Save code snippets during testing.
  • Writers: Draft and export short notes.
  • Students: Quickly archive research snippets.
  • Anyone needing lightweight text storage!

Customization Opportunities

Want to enhance the app? Try these ideas:
🔧 Support Multiple Formats: Add dropdowns for .md, .html, or .json.
🔧 Cloud Sync: Integrate Firebase for auto-saving to the cloud.
🔧 Dark Mode: Toggleable themes for eye-friendly usage.
🔧 Export History: Local storage for recent downloads.


How to Use the App

  1. Enter a filename (optional).
  2. Type or paste text into the text area.
  3. Click “Save as .TXT” to download.
  4. Use “Clear All” to reset instantly.

Download & Installation

📥 Download Source Code Here

  1. Download the ZIP file.
  2. Extract and open index.html in any browser.
  3. Start saving text instantly—no setup required!

Why This Project Matters

This app exemplifies how minimalist web tools can solve real-world problems without complex frameworks. It’s perfect for:

  • Learning core web development concepts
  • Building a portfolio piece
  • Creating a browser extension foundation

index.html

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>Save Text As File JavaScript | CodingNepal</title>
    <link rel="stylesheet" href="style.css">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="script.js" defer></script>
  </head>
  <body>
    <div class="wrapper">
      <textarea spellcheck="false" placeholder="Enter something to save" required>Lorem Ipsum is simply dummy text of the printing and type setting industry. Lorem Ipsuam has been the industries standard dummy texts ever since this 1500s, when an unknown printer took a galley of type and scrambled it to make a type of dollar specimen book. It have survived not only five centuries, but also from the leap into electronic typesetting.</textarea>
      <div class="file-options">
        <div class="option file-name">
          <label>File name</label>
          <input type="text" spellcheck="false" placeholder="Enter file name">
        </div>
        <div class="option save-as">
          <label>Save as</label>
          <div class="select-menu">
            <select>
              <option value="text/plain">Text File (.txt)</option>
              <option value="text/javascript">JS File (.js)</option>
              <option value="text/html">HTML File (.html)</option>
              <option value="image/svg+xml">SVG File (.svg)</option>
              <option value="application/msword">Doc File (.doc)</option>
              <option value="application/vnd.ms-powerpoint">PPT File (.ppt)</option>
            </select>
          </div>
        </div>
      </div>
      <button class="save-btn" type="button">Save As Text File</button>
    </div>
  </body>
</html>
/* Import Google font - Poppins */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 10px;
  background: #17A2B8;
}
.wrapper{
  width: 443px;
  border-radius: 7px;
  background: #fff;
  padding: 30px 25px 40px;
  box-shadow: 0 10px 15px rgba(0,0,0,0.05);
}
.wrapper :where(textarea, input, select, button){
  width: 100%;
  outline: none;
  border: none;
  font-size: 17px;
  border-radius: 5px;
}
.wrapper :where(textarea, input)::placeholder{
  color: #aaa;
}
.wrapper :where(textarea, input):focus{
  box-shadow: 0px 2px 4px rgba(0,0,0,0.08);
}
.wrapper textarea{
  height: 270px;
  resize: none;
  padding: 8px 13px;
  font-size: 17.6px;
  border: 1px solid #ccc;
}
.wrapper .file-options{
  display: flex;
  margin-top: 10px;
  align-items: center;
  justify-content: space-between;
}
.file-options .option{
  width: calc(100% / 2 - 8px);
}
.option label{
  font-size: 17px;
}
.option :where(input, .select-menu){
  height: 50px;
  padding: 0 13px;
  margin-top: 6px;
  border-radius: 5px;
  border: 1px solid #bfbfbf;
}
.option .select-menu select{
  height: 50px;
  background: none;
}
.wrapper .save-btn{
  color: #fff;
  cursor: pointer;
  opacity: 0.6;
  padding: 16px 0;
  margin-top: 20px;
  pointer-events: none;
  background: #17A2B8;
}
.save-btn:hover{
  background: #148c9f;
}
textarea:valid ~ .save-btn{
  opacity: 1;
  pointer-events: auto;
  transition: all 0.3s ease;
}

@media screen and (max-width: 475px) {
  .wrapper{
    padding: 25px 18px 30px;
  }
  .wrapper :where(textarea, input, select, button, label){
    font-size: 16px!important;
  }
  .file-options .option{
    width: calc(100% / 2 - 5px);
  }
  .option :where(input, .select-menu){
    padding: 0 10px;
  }
  .wrapper .save-btn{
    padding: 15px 0;
  }
}
const textarea = document.querySelector("textarea"),
fileNameInput = document.querySelector(".file-name input"),
selectMenu = document.querySelector(".save-as select"),
saveBtn = document.querySelector(".save-btn");

selectMenu.addEventListener("change", () => {
    const selectedFormat = selectMenu.options[selectMenu.selectedIndex].text;
    saveBtn.innerText = `Save As ${selectedFormat.split(" ")[0]} File`;
});

saveBtn.addEventListener("click", () => {
    const blob = new Blob([textarea.value], {type: selectMenu.value});
    const fileUrl = URL.createObjectURL(blob);
    const link = document.createElement("a");
    link.download = fileNameInput.value;
    link.href = fileUrl;
    link.click();
});

Final Thoughts

By combining HTML’s structure, CSS’s styling power, and JavaScript’s interactivity, you’ve created a tool that’s both practical and educational. Host it on GitHub Pages, share it with your network, or expand it into a browser extension!

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