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#WebP

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@ianthetechie

Oh, I do plenty of the pre-processing. Peruse the #LossyPNG hashtag, it's probably 100% me.

But Amiga HAM would be a fun hobby-horse.

I do use #WebP for the fediverse now, as it's supported by #GoToSocial natively, but I think #AVIF is actually considerably better.

Try a few test images on your own and see how it fares. I usually do something like:

convert image.png -quality 20 image.webp

and then attempt to create an image of nearly the same size in JPEG and AVIF for comparison.

convert image.png -quality {trial-and-error} image.avif
convert image.png -quality {trial-and-error} image.jpeg

The AVIF is almost always better looking, and the JPEG is almost always a total mosaic. ;)

https://rldane.space/the-case-for-avif.html

P.S., yes, you can name JPEGs .jpeg. It's not 1993 anymore. :P

rldane.spaceThe Case for AVIF
Replied in thread

@adamsdesk

YES!!! #AVIF #FTW!!!

Just FYI, nsxiv, imv, and swayimg all support AVIF as well, although imv did oddly have a glitch with one of the images I tested it with. I'd never seen that happen before.

According to some people I've spoken with, JPEG is still king for high-fidelity images and minimizing loss upon re-compression, but AVIF just totally whips the llama's posterior when it comes to relatively high fidelity at crazy low file sizes (high compression).

AVIF is often noticeably better quality than #WebP at the same (low) file size and resolution, and parsecs beyond what JPEG can do with high compression factors.

If only the fediverse supported it!!! :(

We barely have WebP support (mostly on #GtS, maybe #snac (haven't tried it)), not on #Mastodon.

Replied in thread

@anselmschueler

I love it when people ask. XD

I am:

  1. Deeply nostalgic about the 16-bit era of computing and its graphic limitations
  2. Deeply concerned that I use as little of my instance admin's (admittedly ample) data storage as possible

So, I almost never post videos, and when I post pictures, I either post as very compressed #WebP (not my favorite image format, but it's the best format for low-fidelity/high-compression images that #GoToSocial supports), or "lossy"-compressed PNGs.

I have a utility on my phone (Image Toolbox) that can reduce PNG files by reducing the number of colors, but it's not great at picking the colors.

When I have the time and presence of mind to do so, I will take the PNG into GIMP and either use its conversion function to reduce the number of colors (to something like 32 or maybe 64, possibly as low as 4 or 8), or (like in the above case) I'll actually hand-select the important colors in the image and tell GIMP to reduce the image to just those colors.

In this case, the original screenshot PNG was 83KiB, which I managed to bring down to 16KiB through the manual color reduction process (down to just 6 colors).

If you peruse the #LossyPNG hashtag, there are plenty of examples. Some are obviously reduced (and are reminiscent of graphics on 16 bit machines like the #Amiga or #AtariST), but some look quite good for how severely reduced they were.

f-droid.orgImage Toolbox | F-Droid - Free and Open Source Android App RepositoryA powerful image editing app that allows you to crop, filter, convert, resize, c
Continued thread

I kinda love the fact that this 2k resolution photo looks like it was recorded on an ancient VHS tape at ESLP (extra super long play) speeds.

#WebP is horrible, and also amazing. 😁

And look, it's a TWO KAY image that takes up the same amount of space as the original macintosh's screenbuffer (512x342 mono)! 🤣

(Okay, 860 bytes more)

If you're hosting Immich on a spare computer, using an old external disk drive, reduce your storage requirements by converting your Jpeg files to webp. Keep the .jpg extension too! You can probably get them down to about half the size of a Jpeg.

This is really only if you're exporting files from elsewhere to Immich. I export from Lightroom Classic. Don't ever go touch your original files!

for i in *.jpg
do
cwebp -metadata all "$i" -q 70 -m 6 -o out.tmp
mv out.tmp "$i"
done

Welp, another notch in the Linux better than Windows column. Linux Mint natively can load webp files. Haven't tried to see if they will work as wallpapers yet, but still. That's nice. Windows 10 has a panic attack.

Wonder if it'll load heic files.

Hi all,

Is there a free app out there for Windows for viewing/printing/converting HEIC and WebP images? People want these printed at work and they do NOT play nicely with Windows.

It has to be free and not require altering registries as I'm on a work computer. FOSS would be a bonus.

I'm on Win10 FWIW.

Thanks.

#HEIC#HEVC#WebP

#Google reckons that it can improve #JPEG with #Jpegli, a new #encoder and #decoder #library that promises to be highly compatible with JPEG.

Jpegli uses heuristics developed for #JPEGXL, making it more of a JPEG XL successor (or improvement). Compared to JPEG it offers a higher #compression ratio, 10+-bit support which should reduce issues like banding. Jpegli #images are said to be compatible with existing JPEG decoders, much like #JPEGXT and XL

hackaday.com/2024/04/07/jpegli

Hackaday · Jpegli: Google’s Better JPEG And Possible Death Knell For WebPAlong with the rise of the modern World Wide Web came the introduction of the JPEG image compression standard in 1992, allowing for high-quality images to be shared without requiring the download o…