Convert APNG (Animated PNG) to EXR

Animated Portable Network Graphics (APNG) is an extension of the Portable Network Graphics (PNG) format designed to support animated images. Introduced in 2004, APNG allows for animated sequences while retaining backward compatibility with non-animated PNG files. This format is utilized for its lossless compression, making it ideal for web graphics where image quality is paramount. APNG files are widely used for animated icons, logos, and other elements that benefit from high-quality animations without the artifacts common in GIF files. Its concise, efficient structure makes it a preferred choice among developers and designers focused on optimizing web performance.

The EXR file extension stands for OpenEXR, a high dynamic range (HDR) image file format developed by Industrial Light & Magic (ILM) in 1999 for visual effects and film production. OpenEXR is widely used for its ability to store multi-channel, floating-point images, supporting complex visual effects workflows with superior image quality and precision. Its features include lossless and lossy compression, arbitrary image channels, and a flexible data structure, making it an essential tool in professional digital imaging and animation industries.