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> peace of mind of knowing PNG is always lossless There is pngquant: > a command-line utility and a library for lossy compression of PNG images.
by 149765 3y ago
> peace of mind of knowing PNG is always lossless
There is pngquant:
> a command-line utility and a library for lossy compression of PNG images.
- bombcar 3y agoYou also have things like https://tinypng.com https://tinypng.com which do (basically) lossy PNG for you. Works pretty well.
- ComputerGuru 3y agoNeither of these are really what I'm referring to, as I view these as ~equivalent to converting a jpeg to png. What I mean is within a pipeline, once you have ingested a [png|webp|jpeg] and you need to now render it at various sizes or with various filters for $purposes. If you have a png, you know that you should always maintain losslessness. If you have a jpeg, you know you don't. You don't need to inspect the file or store additional metadata, the extension alone tells you what you need to know. But when you have a webp, the default assumption is that it's lossy but it can sometimes be otherwise.
- lonjil 3y agoActually, if you already have loss, you should try as hard as possible to avoid further loss.
- ComputerGuru 3y agoI don't disagree, in principle. But if I have a lossy 28MP jpeg, I'm not going to encode it as a lossless thumbnail (or other scaled-down version).