How do I use the C array in my embedded project?

Include the generated header file (.h) in your C/C++ source code to render the graphics directly from microcontroller Flash/PROGMEM without needing a filesystem.

Is it compatible with Arduino and ESP32 display libraries?

Yes, it outputs standard C array syntax compatible with TFT_eSPI, LVGL, Adafruit GFX, and U8g2.

Can I convert multiple SVGs to C arrays at once?

Yes, bulk conversion generates formatted arrays for all uploaded vector files.

Free SVG to C Array Converter | C/C++ Header Byte Array Generator

100% Free User-Side

SVG to C Array

Convert SVG vector graphics into C/C++ byte arrays (`const unsigned char image[]`) for Arduino, ESP32, Raspberry Pi, and embedded GUI development.

SVG (Vector XML) - up to 100MB each

Drop your images here

or click anywhere to browse files

SVG (Vector XML) - up to 100MB each

How to Convert SVG to C Array (.h)?

Upload JPG Images

Drop your JPG files into the upload zone above, or click to choose files from your device. You can convert multiple files at once.

Adjust Advanced Options (Optional)

Click the settings panel if you need to resize the images, customize background, or adjust AVIF compression quality.

Download Converted PNG

Click 'Convert to PNG' to process. You can download the AVIFs individually or as a single ZIP archive.

Full Transparency Support

Preserves 100% alpha channel transparency so your logos, icons, and cutouts look flawless on any background.

Next-Gen Compression

Delivers up to 50% smaller file sizes than PNG while retaining remarkable high-definition clarity.

100% Offline & Private

No network transfers. All images stay entirely inside your local device memory for complete cryptographic privacy.

What is an SVG (Scalable Vector Graphics) file?

SVG is an XML-based vector graphics standard developed by the W3C under the .svg file extension. By defining visual shapes through mathematical coordinates and formulas, it guarantees razor-sharp rendering on high-DPI screens without consuming excessive disk space.

Why convert SVG to a C Array?

Embedded hardware platforms like Arduino, ESP32, STM32, and Raspberry Pi Pico microcontrollers lack full operating systems and XML parsing engines to render raw SVG text files. Converting an SVG into a C Array rasterizes the vector graphic into a static hexadecimal byte array that can be compiled straight into microcontroller flash memory for display on LCD and OLED screens.

Developed by: World Wide Web Consortium (W3C)

Initial Release: September 4, 2001

What is a C Array image file?

A C Array image file is a C or C++ source header file (typically saved with .c or .h extensions) containing image pixel data represented as a comma-separated list of hexadecimal byte values. This allows compilers like GCC and Clang to link the graphical asset directly into firmware binaries for instant hardware display.

How to use C Array image data in embedded software?

You simply #include "image.h" in your microcontroller code and pass the byte array pointer to your display library, such as TFT_eSPI, Adafruit_GFX, or LVGL. The graphic renders immediately on your OLED or LCD screen without requiring an SD card reader or file system.

Our local tool converts any SVG graphic into clean, production-ready C Array source code directly in your browser with zero network latency.

Developed by: Dennis Ritchie (ANSI C Standard)

Initial Release: 1972

FAQs

Can I convert SVG to C Array (.h) free of charge and without limits?

Absolutely. You can convert SVG to C Array (.h) free with no hidden paywalls, no watermarks, and no daily file caps. It is a completely free image converter built for developers and everyday users alike.

Why is a client-side SVG to C Array (.h) converter safer for personal photos?

An offline architecture ensures that sensitive documents, financial screenshots, or family photos remain entirely inside your device memory. As a secure local PNG converter no server upload, it provides total cryptographic privacy because your files never leave your browser.

Does AVIF support PNG transparency?

Yes! AVIF features advanced alpha-channel coding that completely preserves translucent and transparent graphics with zero black box artifacts.

Why Choose Our SVG to C Array (.h) Converter?

We designed our tool to be the fastest and safest option available. Here’s how our private SVG to C Array (.h) converter gives you an edge:

100% Private & Secure: All processing happens locally on your device. Since there is no server upload, your personal and sensitive images are never stored or seen by anyone else.
Preserve Transparency: Clean alpha transparency retention guarantees your graphics and icons render flawlessly.
Instant Performance: Enjoy unthrottled speeds with zero cloud latency. Whether you use it on a desktop or need to convert SVG to C Array (.h) on mobile, it feels like a native app.
Bulk ZIP Packaging: Process multiple images in seconds and download them all together in a single convenient ZIP file.

About this tool

The SVG to C Array (.h) converter by FreeImgLab offers a secure and high-speed way to change SVG to C Array (.h) directly from your browser. We prioritize your privacy - our offline SVG to C Array (.h) transformer runs entirely on your device, meaning your photos are never uploaded to any server. If you need to reduce your file weight after converting, try our Bulk Image Compressor.

Fully running inside a safe browser-based client-side engine, it outputs crisp, modern AVIF images without any latency or artificial limits. Get professional-grade results without paying for a subscription. You can also securely scale dimensions using our Bulk Image Resizer.