# lvgl/lvgl

LVGL is a free, full-featured embedded UI library for devices from small MCUs to 3D-capable MPUs, enhanced by LVGL Pro, a professional editor and tooling.

Repository: https://github.com/lvgl/lvgl
Canonical: https://ross.abutalabs.com/products/lvgl
Homepage: https://lvgl.io
Language: C
License: MIT
License Family: permissive
Topics: c, cpp, display, e-ink-display, embedded-ui, esp32, graphics-library, hmi, linux, lvgl, nxp, oled-display, renesas, stm32, tft-display, touchscreen, ui, zephyr, arduino, lvgl-pro
Last push: 2026-08-26T19:49:07+00:00

## Health v2 (maintenance only)
Score: 81/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 47, longevity 100
- inputs: {"age_days": 3738, "days_push": 7, "days_rel": 196, "gap_med": 129.5, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 24501, forks 4322 (observed 2026-08-28T04:11:37.138363+00:00)

## What it is
LVGL (Light and Versatile Graphics Library) is a free, MIT-licensed open-source embedded UI library written in C for building graphical user interfaces on MCUs and MPUs, with 30+ widgets, animations, and no external dependencies. It is complemented by commercial tooling (LVGL Pro editor/CLI and LVGL Safe for safety-critical products) and is widely integrated by chip vendors like NXP, Espressif, and Renesas.

## Use cases
- build a touchscreen GUI on an STM32 or ESP32 microcontroller
- create an embedded UI for a small TFT or OLED display with limited RAM
- develop an HMI interface for an industrial device
- render UIs on e-ink displays with low-power MCUs
- prototype embedded UIs on a PC with a simulator before deploying to hardware
- add a graphical interface to a Zephyr or NuttX RTOS project
- design UIs in XML or Figma and export C code for embedded targets

## When to choose
- you need a lightweight, dependency-free UI library that runs on almost any MCU or MPU
- you have constrained resources (~100kB flash, tens of kB RAM) and need efficient rendering
- you want vendor-neutral, MIT-licensed code with broad chip and RTOS support
- you need rich built-in widgets, animations, and multi-language text including Arabic/Persian

## When to avoid
- you are building a desktop, web, or mobile application rather than an embedded UI
- you need a fully qualified, certified safety-critical library today (LVGL Safe is still an unstable evaluation preview)
- your target lacks a display or falls below the minimum requirements (64MHz clock, C99 compiler)
- you prefer a higher-level framework with a managed runtime rather than C-level integration

## Facets
- artifact type: library
- maturity: stable
- function: ui-components, graphics, animation, gui
- domain: embedded-systems, graphics, iot, cross-platform
- platform: embedded, cpp, c, cross-platform
- tags: embedded-ui, mcu, mpu, touchscreen, tft-display, oled, e-ink, stm32, esp32, zephyr, arduino, hmi, widgets, mit-license, linux

## Member repositories
- lvgl/lvgl (main) score 81

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:37.138363+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:56:12.886322+00:00, confidence not recorded.
  - readme: https://github.com/lvgl/lvgl (fetched 2026-08-28T04:11:37.138363+00:00, sha 975cd60ff0c4)
  - homepage: https://lvgl.io (fetched 2026-08-29T07:53:32.760026+00:00, sha 3e4fa587e33b)
  - site_page: https://lvgl.io/features (fetched 2026-08-29T07:53:32.769640+00:00, sha 5398e25653ac)
  - site_page: https://docs.lvgl.io/master (fetched 2026-08-29T07:53:32.771890+00:00, sha a082ad8bf4ba)
  - site_page: https://lvgl.io/docs/safe (fetched 2026-08-29T07:53:32.773929+00:00, sha a64ce15260b1)
  - site_page: https://lvgl.io/about (fetched 2026-08-29T07:53:32.775575+00:00, sha 748938880aa9)
- Data as of 2026-08-30T08:39:29.467469+00:00.