Lvgl

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LVGL is an open-source embedded graphics library for creating UIs on MCUs, MPUs, and various display types. It offers a comprehensive toolkit, including an XML Editor, to build and test UIs efficiently.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Skill level

Technical

About

What is lvgl?

LVGL is a free and open-source UI library designed to create graphical user interfaces for any MCU, MPU, and display type. It is fully portable, written in C (C++ compatible), and has no external dependencies, making it easy to compile for a wide range of embedded targets. LVGL supports various display technologies like monochrome, ePaper, OLED, and TFT, and requires minimal resources (~100kB RAM, ~200–300kB flash for simple UIs). It includes over 30 built-in widgets, a flexible style system, and layout engines like Flexbox and Grid. The LVGL Pro Editor provides a complete toolkit for building, testing, sharing, and shipping embedded UIs faster, featuring an XML Editor, Online Viewer, CLI Tool, and Figma Plugin.

Best used for

Ideal for embedded system developers and engineers who need to create custom graphical user interfaces for MCUs and MPUs, implement responsive UI layouts, and integrate advanced styling. Especially valuable for projects requiring a lightweight, portable, and feature-rich UI library for various display types.

Common actions

design embedded UIs

create graphical interfaces

develop MCU applications

implement UI layouts

test UI components

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Capabilities

Key features

30+ built-in widgets
Flexible style system
Flexbox and Grid layouts
UTF-8 text rendering
3D rendering engine
XML UI Editor
Figma Plugin

Target Audience

embedded systems engineersfirmware developersiot developershardware engineers

Integrations

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Pricing & Plans

Open Source

Free

FAQs

What are the minimum hardware requirements for LVGL?

For a simple UI, LVGL requires approximately 100kB RAM, 200–300kB flash memory, and a buffer size equivalent to 1/10 of the screen for rendering. It has no external dependencies, making it suitable for small MCUs to multi-core MPUs.

What is LVGL Pro and how does it differ from the open-source library?

LVGL Pro is a complete toolkit that complements the open-source library, offering tools like an XML Editor for building components, an Online Viewer, a CLI Tool for C code generation and testing, and a Figma Plugin for style syncing. It aims to accelerate UI development and testing.

Can LVGL be used for commercial projects?

Yes, LVGL is distributed under the MIT license, which allows for easy integration and use in commercial projects without restrictions. Commercial services like graphics design, UI implementation, and consulting are also available from LVGL LLC.

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Open Source & Models Code Assistants DevOps & Infrastructure No-Code / Low-Code Testing & QA Backend & APIs

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Also listed in

This tool also appears in

Content & Design › UI/UX Design

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