TDLib: Cross-Platform Library for Building Telegram Clients

TDLib: Cross-Platform Library for Building Telegram Clients

Summary

TDLib is a robust, cross-platform library designed for building Telegram clients. It supports various operating systems and programming languages, simplifying the development process by handling network details, encryption, and data storage. This makes it an ideal choice for developers looking to integrate Telegram functionalities into their applications.

Repository Info

Updated on December 4, 2025
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Tags

cross-platformlibrarytelegramC++APIMessagingDevelopment

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Introduction

TDLib, or Telegram Database library, is a powerful, cross-platform library specifically designed for building Telegram clients. It simplifies the complex process of interacting with the Telegram API, making it accessible from almost any programming language. TDLib handles all the intricate details of network implementation, encryption, and local data storage, allowing developers to focus on their application's unique features. Known for its high performance and reliability, TDLib is a cornerstone for many Telegram-related projects.

Installation

The simplest way to get started with TDLib is by using its TDLib build instructions generator. This tool provides detailed, step-by-step instructions tailored to your chosen programming language and operating system.

For a general build process, you will need a C++17 compatible compiler (like Clang 5.0+, GCC 7.0+, MSVC 19.1+), OpenSSL, zlib, gperf (build only), and CMake (3.10+, build only). Once dependencies are met, you can compile TDLib using CMake:

mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
cmake --build .

Examples

TDLib offers comprehensive documentation and examples to help you integrate it into your projects.

Why Use It

TDLib stands out with a robust set of features that make it an excellent choice for developing Telegram clients:

  • Cross-platform: Supports a wide array of operating systems, including Android, iOS, Windows, macOS, Linux, and more.
  • Multilanguage: Easily usable with any language capable of executing C functions, with native bindings for Java (JNI) and .NET (C++/CLI, C++/CX), and a versatile JSON interface.
  • Easy to use: Abstracts away complex network, encryption, and local data storage details.
  • High-performance: Proven to handle over 25,000 active bots simultaneously per instance in the Telegram Bot API.
  • Well-documented: All API methods and public interfaces are thoroughly documented.
  • Consistent: Guarantees that all updates are delivered in the correct order.
  • Reliable: Maintains stability even on slow or unreliable internet connections.
  • Secure: Encrypts all local data using a user-provided key.
  • Fully-asynchronous: Requests do not block each other, and responses are sent as they become available.

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