jpeg2png
ImageOptim-CLI
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| jpeg2png | ImageOptim-CLI | |
|---|---|---|
| 2 | 1 | |
| 469 | 3,418 | |
| - | - | |
| 10.0 | 5.4 | |
| over 3 years ago | 4 months ago | |
| C | TypeScript | |
| GNU General Public License v3.0 only | MIT License |
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Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
jpeg2png
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Google Chrome Is Already Preparing To Deprecate JPEG-XL (~3x smaller than JPEG, HDR, lossless, alpha, progressive, recompression, animations)
That's not necessarily the case with the jpeg2png decoder, but it's been a while since I used it, and I'm not able to test right now. The PNG files will be smaller than with the usual JPEG decoding process, at least.
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Losslessly Optimising Images
This tool optimises blocky JPEGs for a better viewing pleasure: https://github.com/victorvde/jpeg2png
> jpeg2png finds the smoothest possible picture that encodes to the given JPEG file.
ImageOptim-CLI
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Losslessly Optimising Images
Disclaimer: There may be newer tools with better support for Linux or Windows, but for macOS users, the venerable "ImageOptim-CLI" project ^1 remains a powerful option.
It wraps ImageOptim, ImageAlpha, and JPEGmini in a single executable, and is able to produce visually-indistinguishable image assets with 60-80% reduction in bytecount, for nearly any corpus of unoptimized files. I've used it to great effect as a webperf consultant. Enjoy! :)
1. https://github.com/JamieMason/ImageOptim-CLI
What are some alternatives?
shrivel - Command line wrapper utility to shrink a path of images for web based on external tools.
zopfli - Zopfli Compression Algorithm is a compression library programmed in C to perform very good, but slow, deflate or zlib compression.
PNG-spec - Maintenance of the PNG specification
guetzli - Perceptual JPEG encoder
Zpng - Better lossless compression than PNG with a simpler algorithm
oxipng - Multithreaded PNG optimizer written in Rust
libavif - libavif - Library for encoding and decoding .avif files
ImageOptim - GUI image optimizer for Mac