zopfli
optipng-bin
zopfli | optipng-bin | |
---|---|---|
9 | 4 | |
3,376 | 98 | |
0.5% | - | |
2.6 | 4.7 | |
about 1 month ago | 5 months ago | |
C++ | JavaScript | |
Apache License 2.0 | MIT License |
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zopfli
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How I use Devbox in my Elm projects
This project uses HTMLMinifier, optipng, and zopfli to create a custom production Elm build pipeline. You can see how I make use of these tools in this build script. Here are the results in case you're interested. I used the same ideas from this project to build and deploy dwayne/elm-conduit, which you can learn more about in my article Yet Another Tour of an Open-Source Elm SPA.
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PSA: Use ZopfliPNG to compress your PNG assets
I'm making a 2D game with lots of PNG assets. I recently found that ZopfliPNG regularly reduces the sizes of my assets by ~3x compared to Asesprite's output. I've tried a few other PNG compression tools, but ZopfliPNG consistently outperforms the others.
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Google Chrome Is Already Preparing To Deprecate JPEG-XL (~3x smaller than JPEG, HDR, lossless, alpha, progressive, recompression, animations)
I mean something better than Google's best engineers trying to optimize LZ77's compression as much as humanly possible, while remaining compatible with the DEFLATE/zlib bitstream.
- Improving App Performance
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Losslessly Optimising Images
zopflipng typically beats pngcrus and optipng (on Linux at least) but by default it drops auxillary PNG chunks [0] which can result in browsers (and other applications) using a different color space, causing the resulting images to look more washed out than the original. To prevent this you need to explicitly pass --keepchunks=cHRM,gAMA,pHYs,iCCP,sRGB,oFFs,sTER to zopflipng.
Unfortunately it (and most other tools) don't have APNG support, keeping only the first frame.
[0] https://github.com/google/zopfli/issues/113
- Good, but slow, deflate or zlib compression library
- What am I doing wrong? ffv1 vs "h264 -crf 0"
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webP animated
I tried going with a lot of different compression algorithms, in the end a lot of iterations of Zopfli delivers the best result. With that, I got the image down to 591 kB.
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KB Club: With links to HN, Reddit, Lobsters threads for each website
I tried zopflipng [1] with the very expensive option suggested from the usage and got 2,493 bytes (original 2,740 bytes, nowhere practical as it took 3 minutes) so you don't have to sacrifice the palette, though I'm not sure if 16 or even 4 color palette will significantly alter the visual.
[1] https://github.com/google/zopfli
optipng-bin
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How I use Devbox in my Elm projects
This project uses HTMLMinifier, optipng, and zopfli to create a custom production Elm build pipeline. You can see how I make use of these tools in this build script. Here are the results in case you're interested. I used the same ideas from this project to build and deploy dwayne/elm-conduit, which you can learn more about in my article Yet Another Tour of an Open-Source Elm SPA.
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PSA: Use ZopfliPNG to compress your PNG assets
Did you compare to PNG crush and optipng? Those are what I used to use because they're easily installable Linux/brew packages.
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Problem with node_modules, optipng-bin
It seems that the package was updated around 2019 May to not do that -- https://github.com/imagemin/optipng-bin/commit/6bb7f1c2edab67297c7d72fa0bd604ecc214b9f1 -- published as version 6, so maybe you're using an older one.
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Open Source Favicon Generation & Optimisation in 2022
The script optimised the SVG using Scour. This removes some metadata and also shortens IDs as well as strip out comments. For the PNG files we used OptiPNG on the maximum optimisation setting. This can be slow on larger files, but for favicons should not take long. Here’s the before and after comparison of files sizes for a particular favicon, using the script:
What are some alternatives?
oxipng - Multithreaded PNG optimizer written in Rust
squoosh - Make images smaller using best-in-class codecs, right in the browser.
guetzli - Perceptual JPEG encoder
scour - Scour - An SVG Optimizer / Cleaner
libavif - libavif - Library for encoding and decoding .avif files
open-source-favicon-generation - Open source favicon generation: create your favicon from scratch then optimise it for modern and legacy browsers using free apps in 2022.
PNG-spec - Maintenance of the PNG specification
qoi - The “Quite OK Image Format” for fast, lossless image compression
Zpng - Better lossless compression than PNG with a simpler algorithm
ImageOptim-CLI - Make optimisation of images part of your automated build process
vrecord - Vrecord is open-source software for capturing a video signal and turning it into a digital file.
shrivel - Command line wrapper utility to shrink a path of images for web based on external tools.