JPEG competitor: The image format BPG
Whether in the case of digital cameras, image editing programs or on the Web: images are usually saved in the JPEG Format. An Alternative to the JPEG Format has presented to the software developer Fabrice Bellard. The new compression format Better Portable Graphics (BPG) is intended to replace the old JPEG image format. It offers some qualities that stand out clearly from the classic JPEG.
- Compression: high compression rate, images, compression artifacts in JPEG - the photos look pixelated. Since the BPG Format supports a larger color gamut, reduces the artefacts to a Minimum.
- Display in the Browser A JPEG image is rendered directly in the web browser. For a BPG image is needed for most browsers, a small Java script decoder of approximately 250 kilobytes. This allows you to have images in the Browser without Plugins to install.
- Codec: In contrast to the JPEG Format BPG uses a Video codec - x265. This Codec is the Open Source implementation of HEVC/H. 265, a Standard of high-definition Videos.
- File size: BPG achieved in the half of the file size the same image quality like a JPEG picture in full size.
- Color channels: JPEG is not capable of transparent backgrounds to display. BPG has the higher color depth with an alpha channel, which stores the transparency of the image points in each Pixel.
- Color depth: The JPEG Format supports a maximum of 8 Bits per channel, which corresponds to the RGB color space. In theory, this approximately 16.7 million color possibilities. The H. 265 Codec, the BPG Format is able to render 14 Bits per channel. For comparison, you have about 4.4 trillion color possibilities.
Comparison of JPEG and BPG
As you PDF online JPG convert, you will learn in the next tip.
