Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum ================================================================= Websites across the world are increasing their use of the Portable Network Graphics imaging format, as a powerful and cross-platform way to represent images. With key features such as alpha blending, it is no surprise that many websites in countries such as China and India also use larger high-resolution PNG images on their sites. Increasingly these images are decoded by the mobile device, and typically also scaled down to fit the user's zoom selection on the device's browser. In order to improve the decode time, Qualcomm Innovation Center has optimized the PNG library found on many common OS platforms such as Web OS, Android, and Chrome OS. Our team re-implemented the png_read_filter_row() routine to utilize the DSP-like SIMD capabilities of the ARM NEON instruction set. It was then tuned for the specific VeNum hardware unit found as part of the CPU subsystem of the Qualcomm Snapdragon platform. This resulted in a range of 0-50% improvement in PNG decode times.