mock-possum a day ago | next |

> The biggest benefit of JPEG XL would be the ability to combine the preview file, a traditional JPEG, with the RAW into a single file. The concept of “JPEG+RAW” would be obsolete, as a single JPEG XL can do both.

> Another aspect of the format that will appeal to photographers is that it’s got outstanding compression. “The difference between JPEG XL and the old JPEG is, well, I would say 50% at least, that you can reduce [the size of the file and get] the same quality,”

Hype.

TacticalCoder a day ago | root | parent | prev |

> Hype.

What do you mean hype? There's actually a 100% chance JPEG-XL is giving a smaller file than JPEG.

JPEG XL can compress, losslessly, a JPG file to a smaller file.

That .jxl can then be decompressed, bit-for-bit, to the original .jpg file (it's not just lossless in the way pixels are encoded: the resulting file can be bit-for-bit decompressed to the original .jpg file)

Gains range, every single time, from 10% to 30%.

Example here:

    .. $  ls -l a.jpg && shasum a.jpg
    ... 615504 ...  a.jpg
    716744d950ecf9e5757c565041143775a810e10f  a.jpg
 
    .. $  cjxl a.jpg a.jxl
    Read JPEG image with 615504 bytes.
    Compressed to 537339 bytes including container

    .. $  ls -l a.jxl
    -rw-r--r-- 1 e e 537339 Jul 30 21:22 a.jxl

    .. $  djxl a.jxl b.jpg
    Read 537339 compressed bytes.
    Reconstructed to JPEG.

    .. $  ls -l b.jpg && shasum b.jpg
    ... 615504 ... b.jpg
    716744d950ecf9e5757c565041143775a810e10f  b.jpg

duskwuff a day ago | root | parent |

>> Hype.

> What do you mean hype? There's actually a 100% chance JPEG-XL is giving a smaller file than JPEG.

As a one-word statement, it's a colloquial expression of excitement. OP isn't doubting that JPEG-XL is an improvement over JPEG; they're looking forward to it.

karim79 a day ago | root | parent |

I think it is a great format, I can't wait to see how and if it proliferates.

At the same time, looking at Google Trends (just now) reveals that on a global level, in terms of worldwide searches - and in the last 12 months, searches for JPEG XL peaked at around 100, in a single day (sometime in September of last year).

That is a horrendously low amount of interest. Without a concerted effort in education (or re-education) it would appear that it doesn't matter even a tiny bit how much better this format is. To put it politely, almost nobody gives a shit.

Disclaimer: it is my favourite format.