Results for Tag ‘JPEG’

I can be quite passionate about image codecs. A “codec battle” is brewing, and I’m not the only one to have opinions about that. Obviously, as the chair of the JPEG XL ad hoc group in the JPEG Committee, I’m firmly in the camp of the codec I’ve been…

Shortcut to Cloudinary’s solution When the JPEG codec was being developed in the late 1980s, no standardized, lossy image-compression formats existed. JPEG became ready at exactly the right time in 1992, when the World Wide Web and digital cameras were about to become…

What is JPEG 2000? JPEG 2000 is an image format created by the Joint Photographic Experts Group (JPEG) in 2000 to replace the JPEG format. JPEG 2000 files have the extension .JP2. The format uses discrete wavelet transform (DWT), which is the only standard compression scheme that provides both lossless…

JPEG images are either progressive or nonprogressive, depending on their encoding order, not politics. Encoding of and decoding of nonprogressive occurs in this simple order: from top to bottom and from left to right. Consequently, when a nonprogressive JPEG is loading on a slow connection, you see the image’s…

Shortcut to Cloudinary’s solution According to a W3Techs survey, the images on 74 percent of websites worldwide are in JPEG or PNG format and for good reason: those images display well on all browsers. However, several newer image formats are well worth…

(Photo by Erol Ahmed) A few weeks ago, Google officially announced a new JPEG encoder, called Guetzli. Cloudinary has been tracking Guetzli since it was soft-launched in October; it has been amazing to watch news about it bubble up into the…

Cellular Automata are pretty cool things to play with. There are many, many variants, like Conway’s Game of Life, Abelian Sandpiles, Langton’s Loops and Brian’s Brain, but in this blogpost, I’ll just talk about the simplest kinds of cellular automata: one-dimensional cellular automata. The simplest…

JPEGs, PNGs, and GIFs — oh my! Most web developers only learn which format to use through trial, error, and long experience, and not necessarily by fully understanding how these formats actually work. In this article, we’ll take a high-level look at each formats’ compression algorithms, in order to understand…

In part one (One pixel is worth three thousand words) of this turned-to-be-two-part blog post, I discussed one-pixel images and how well different image formats “compress” these images. I was surprised how much there is to be said about the matter. This was supposed to be a short blog…