ImageAlpha
ImageOptim
Ximagic Quantizer
SqueezeFile
Squoosh
Oxipng
PNGGauntlet
TinyPNG
Pingo
schnaq
BookWidgets
Particify
Presentii
Imakiku
CloudVOTE
Ideahunt.io
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Based on our record, ImageAlpha should be more popular than Pingo. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
If anyone wants a internet-free app on OSX, try ImageAlpha! It's great, lots of settings to try and optimize PNGs. https://pngmini.com/. - Source: Hacker News / almost 2 years ago
For non photographic images, I use a combination of ImageAlpha and ImageOptim and sometimes crop the image to 2x of the maximum expected display size (2x so that the image will stay sharp on high-DPI screen). Keep in mind that my method uses the lossy compression approach. Meaning that you wouldn't want to use my method on your master images. Source: over 2 years ago
Try ImageAlpha by the same author as ImageOptim for transparent PNG optimization. Source: about 3 years ago
I've tried a few, the best one was pingo (https://css-ig.net/pingo). Pingo -s9 gives better results than oxipng with Zopfli, while being usually two order of magnitudes faster. It's also faster than "regular" oxipng while being better. I can usually shave of 15%/20% of the size of png files I encounter. One thing I didn't check is that you might pay that in decoding time, I've never seen anybody talking about that... - Source: Hacker News / almost 2 years ago
Pinga, GUI for Pingo (https://css-ig.net/pingo) for lossless photo compression while keeping the metadata. Source: almost 3 years ago
ImageOptim - Faster web pages and apps.
schnaq - Create an engaged and interactive audience with the schnaq Q&A, polls and more.
Ximagic Quantizer - Ximagic Quantizer Toolbox with 10 color reduction filters (uniform, popularity, octree, median, wu, dennis lee, binary split, neuquant and scolorq) and 11 dithering filters error diffusion:(floyd-steinberg, fan, jarvis, stucki, sierra3, sierra2, sie…
BookWidgets - BookWidgets is an excellent application that let you create engaging exercises in minutes and easily share a varied variety of beautiful and fun activities with your classroom and others.
SqueezeFile - squeeze your files to different dimension.
Particify - Particify is a learning platform that provides you the interactive and fun features to create activities for your audience engagement and effective interaction.