English Technology 科技

Rough tests of Jpegli

Jpegli, a new JPEG coding library, does bring a significant compression ratio improvement, comparing to libjpeg-turbo and MozJPEG.

I selected 332 lossless non-photographic PNG images for some rough tests, on macOS Sonoma 14.4.1. The images were recorded after applied with ImageOptim‘s lossless optimisation for the minimal possible sizes, and Jpegli was directly from libjxl version 0.10.2.

The built-in JPEG library (quality at 90, supposed to be libjpeg-turbo?) encoded them to 174,095,425 bytes, MozJPEG (quality at 91) encoded them to 145,553,618 bytes, and Jpegli (quality at 92) encoded them to 128,006,534 bytes. That is about 26.5% smaller than libjpeg-turbo and 12% smaller than MozJPEG.

The quality values were tested initially with some images based on DSSIM, and the bonus 1 of MozJPEG and bonus 2 of Jpegli also reflected the latest benchmark by Jon Sneyers.

For fun, I tested Jpegli with XYB (–xyb), and the size becomes 112,809,722 bytes— even 11.9% smaller than conventional Jpegli. However, some softwares displayed thumbnails of XYB JPEG files with totally wrong colours.

Finder thumbnails

Even without XYB, Jpegli is still the most competitive choice for encoding JPEG images.



English Technology 科技

petpet generator

You can use the generator to create an animation like that.


Bustycat for Dragonflight


Liv’s character information
A lively husky bouncing a pair of heavy breasts, whose something fat is lively too.


Céline | Fahada | Liv | Neko | Bustycat | Meow


Romance from Tamsui

English Technology 科技

Geekbench 6 results

Z370 AORUS Gaming 3
(i5-9600 & RX 580)
Single-core: 1518
Multi-core: 5856
Vulcan: 47772
OpenCL: 44511

(i5-9600 & RX 580)
Single-core: 1464
Multi-core: 5698
Metal: 47013
OpenCL: 42705

(Q8400 & HD 7850)

Single-core: 407
Multi-core: 1117
Vulcan: 17872
OpenCL: 19549

(Q8400 & HD 7850)

Single-core: 401
Multi-core: 1004
Metal: 22586
OpenCL: 18729

iPad mini (6th generation)
Single-core: 2134
Multi-core: 5365
Metal: 19591

iPhone XR
Single-core: 1292
Multi-core: 2042
Metal: 9245

iPad (6th generation)
Single-core: 844
Multi-core: 1060
Metal: 4544

MacBookPro9,2 (i5-3210M)
Single-core: 236
Multi-core: 778
Metal: *frozen
OpenCL: 532

MacBook4,1 (T8300)
Single-core: 328
Multi-core: 550

English Technology 科技

macOS icon of Aether

I wanted to make my Dock look more comfortable so I made an icon for Aether by myself. You can try it now:


Tabby cat, big breasts, pussy juice

Slightly revised on Clip Studio Paint and then upscaled on Pixelmator Pro.

masterpiece, best quality, solo, anthro, female, (tabby cat:1.2), (gray body), green eyes, pink nose, (long hair), black hair, (big breasts:1.5), erected nipples, (plump labia), pussy juice, (spread legs), by Michael & Inessa Garmash, Ruan Jia, Pino Daeni, iskra, personalami, scappo

Negative prompts
multiple characters, (cross-eyed:1.8), (bad anatomy:1.2), disfigured, mutated, mutation, (extra limbs:1.5), (missing limbs:1.5), (deformed hands), (malformed hands), (multiple breasts), (big areola:1.5), chubby, long neck, collaboration, simple background, low quality, poorly drawn, ugly, (cropped), blurry, depth of field, artist name, signature, text, watermark

Other values
Steps: 65, Sampler: Euler a, CFG scale: 9, Seed: 2538896502, Size: 512×768, Model hash: 50ad914b

Artworks 作品 中文