How to Create a Telegram Mini App: A Step-by-Step Guide

Telegram Mini Apps really are a powerful feature in the Telegram platform that enable developers to create seamless, interactive web applications that run inside the Telegram interface. These apps give a smooth buyer experience and can vary from games and productivity tools to e-commerce storefronts and booking systems.

In this article, we’ll walk you through the operation of create mini app telegram over completely from scratch.

🧠 What Is a Telegram Mini App?
Telegram Mini Apps are lightweight web apps launched inside Telegram chats via inline buttons or through bot commands. They are built using web related technologies (HTML, CSS, JavaScript) and interact with Telegram’s Bot API and Web Apps API.

These apps:

Run in Telegram's built-in browser

Can access user data (with permission)

Integrate seamlessly with Telegram bots

Support payment and authorization flows

🛠️ Tools & Prerequisites
Before getting started, you’ll need:

A Telegram account

A Telegram bot (via BotFather)

Basic web development knowledge (HTML, CSS, JS)

Hosting for your web app (e.g., Vercel, Netlify, or your own server)

Optional tools:

Node.js (for backend logic)

Web frameworks like React or Vue

📝 Step 1: Create a Telegram Bot
Open @BotFather on Telegram.

Use /newbot to make a new bot.

Choose a title and a username for your bot.

Copy the API token provided — you’ll want it to communicate with Telegram’s servers.

🌐 Step 2: Build the Web App
You will use plain HTML/CSS/JS or even a frontend framework. Here’s a straightforward example using plain HTML:

html
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My Mini App

<br/> body font-family: sans-serif; padding: 20px; <br/> button padding: 10px; <br/>

Hello from Telegram Mini App!

Send Data

<br/> const tg = window.Telegram.WebApp;<br/> tg.expand(); // Makes the app take full screen<br/> <br/> function sendData() <br/> tg.sendData("Hello Telegram!");<br/> <br/>

Host this file using any static hosting provider.

⚙️ Step 3: Set Up Web App in Bot
Go to BotFather.

Use /setdomain to join up to your web app domain.

Use /setcommands to incorporate a command like /start or /open.

In your bot code, you’ll send a keyboard button which has a web_app object:

Example in Node.js (using node-telegram-bot-api):

js
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const TelegramBot = require('node-telegram-bot-api');
const token = 'YOUR_BOT_TOKEN';
const bot = new TelegramBot(token, polling: true );

bot.onText(/\/start/, (msg) =>
bot.sendMessage(msg.chat.id, "Open the mini app:",
reply_markup:
keyboard: [[ text: "Open App", web_app: url: "//yourdomain.com/app" ]],
resize_keyboard: true,
one_time_keyboard: true,

);
);
✅ Optional: Get User Data
In your frontend, you have access to Telegram user info via Telegram.WebApp.initDataUnsafe.

js
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console.log(Telegram.WebApp.initDataUnsafe.user);
Make certain to validate this data in your backend using Telegram’s Web App Authorization.

💳 Bonus: Accept Payments
Telegram Mini Apps support payments via Telegram’s payment system.

Set up a payment provider via BotFather (/setpaymentoptions).

Use the Bot API’s sendInvoice solution to create payment flows.

Payments are processed securely via Telegram with support for services like Stripe.

🧪 Testing Your Mini App
Use Telegram on mobile or desktop (not the internet app).

Make sure your domain uses Hyper Text Transfer Protocol Secure.

Ensure your bot has access to web app features and commands.

🧩 Use Cases
Telegram Mini Apps can be used as:

E-commerce (stores, carts, checkouts)

Booking and reservations

Games and entertainment

Form submissions

Personal dashboards

Telegram Mini Apps bridge the gap between messaging and fully interactive applications. By combining the reach of Telegram bots using the flexibility of web technologies, developers can build powerful experiences inside chat interface.

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Pub: 21 May 2025 17:41 UTC
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