Multiple-image Network Graphics

Multiple-image Network Graphics (MNG) is a graphics file format, published in 2001, designed for animations. Similar to its predecessor, the Portable Network Graphics (PNG) format, MNG is a lossless format, meaning it does not lose quality over time or due to re-savings. However, unlike PNG, MNG supports animations, making it a versatile choice for dynamic image content on the web and in applications. Despite its capabilities, MNG has not seen widespread adoption and is supported by a limited number of software applications and web browsers.

Overview

MNG was developed as an extension of PNG, aiming to provide a robust solution for animated graphics without the limitations of the Graphics Interchange Format (GIF). MNG files are typically larger than GIF files but offer better quality and more color depth. The format supports various features, including alpha transparency, gamma correction, and two-dimensional interlacing.

Features

• Alpha Transparency: Allows for smooth blending of images with their background.
• Gamma Correction: Ensures consistent color appearance across different display systems.
• Interlacing: Provides a progressive display of images, improving user experience during download.
• JPEG Embedding: MNG can embed JPEG images for parts of the animation, allowing for a mix of lossless and lossy compression within a single file.

Adoption and Support

Despite its advantages, MNG has struggled to gain widespread support among web browsers and image editing software. As of the last update, only a few browsers, such as Konqueror and some versions of Opera, offer native support for MNG. The format's complexity and the rise of alternative animation technologies, such as Animated Portable Network Graphics (APNG) and web-based animation standards like CSS Animations and SVG, have further hindered its adoption.

Alternatives

• APNG: A simpler alternative to MNG that extends PNG to support animations. APNG has gained support in major web browsers, including Firefox and Safari.
• GIF: Despite its limitations in color depth and quality, GIF remains popular due to its simplicity and widespread support.
• Web Animations: Modern web technologies like CSS Animations and SVG offer powerful and flexible ways to create animations without the need for specialized image formats.

Conclusion

While MNG offers a comprehensive solution for high-quality animations, its limited support and the availability of simpler or more flexible alternatives have left it as a niche format. Developers and content creators typically opt for formats with broader compatibility and support, relegating MNG to specific use cases where its unique features provide clear benefits.