Online Image Converter
Online Image Converter is a free web application that converts BMP, JPG, PNG or SVG images into C arrays for LVGL projects.
What Online Image Converter is
Online Image Converter is a free web application that converts BMP, JPG, PNG or SVG images into C arrays for LVGL projects. It offers choices for LVGL v9 and LVGL v8 and can process one or more selected images for download. Conversion settings include color format, alpha byte, chroma keying, dithering, output format and big-endian output. The generated C file is intended to be copied into an LVGL project, where application code declares and sets the image with LV_IMG_DECLARE. The tool supports color mode conversion but does not resize images. For compression, stride, binary output or additional color formats, it links to a Python image converter on GitHub. LVGL documentation and a community forum provide related support. LVGL Ltd identifies itself as the company behind the open-source LVGL ecosystem.
Good
- Free browser-based conversion
- Accepts four common image formats
- Supports LVGL v8 and v9
- Batch selection and downloads
- Configurable color and output settings
Watch out
- Does not resize images
- Extra formats require a separate Python tool
- Generated files need project integration
Who it suits
It suits developers preparing image assets for LVGL projects targeting MCUs, MPUs or display types. Users needing resizing must use another tool.
Verdict
Online Image Converter focuses on turning supported image files into LVGL-ready C arrays. Its selectable color and output settings cover common embedded-graphics preparation needs, with a separate Python converter linked for more specialized processing.
The facts
Each one read from Online Image Converter's own pages, with the date it was checked.
What it does
- Additional conversion tool
- For image compression, stride, binary output, and extra color formats, the page points users to a Python image converter on GitHub.checked 4 Oct 2026
- Batch conversion
- Users can choose one or more images and download the resulting files after conversion.checked 5 Oct 2026
- Conversion settings
- The converter provides color format settings, with additional controls for alpha bytes, chroma keying, output format, dithering, and big-endian output.checked 5 Oct 2026
- Generated file use
- The instructions say to copy the generated C file into an LVGL project and declare and set the image in application code.checked 5 Oct 2026
- History
- LVGL says the project began as a side project in 2016.checked 5 Oct 2026
- Input formats
- The page lists BMP, JPG, PNG, and SVG as supported input formats.checked 4 Oct 2026
- Intended ecosystem
- LVGL says its open-source graphics library targets MCUs, MPUs, and display types.checked 5 Oct 2026
- Intended users
- The converter is presented for people preparing images to use in LVGL projects.checked 4 Oct 2026
- LVGL versions
- The page offers separate LVGL v9 and LVGL v8 options.checked 5 Oct 2026
- Privacy
- LVGL's privacy policy says it uses cookies and log files that can include IP address, browser type, ISP, timestamps, and visited pages.checked 5 Oct 2026
- Privacy policy scope
- LVGL says its privacy policy applies to online activities and information shared or collected on its website.checked 4 Oct 2026
- Purpose
- The Image Converter converts BMP, JPG, PNG, or SVG images to C arrays for use in LVGL.checked 5 Oct 2026
- Related tool
- The page points to a Python image converter for image compression, stride, binary output, and extra color formats.checked 5 Oct 2026
- Support
- The site links to LVGL documentation and a community forum.checked 5 Oct 2026
- Support resources
- The page links to LVGL documentation and a community forum.checked 4 Oct 2026
- Using the output
- The instructions say to copy the generated C file into an LVGL project and declare the image with LV_IMG_DECLARE.checked 4 Oct 2026
The company
- Headquarters
- Cambridge, United Kingdomchecked 28 Sep 2026
- Maker
- LVGL Ltd. describes itself as the company behind the LVGL ecosystem, including the open-source LVGL library, LVGL Pro, and LVGL Safe.checked 5 Oct 2026
- Maker background
- LVGL says the project began as a side project in 2016.checked 4 Oct 2026
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