Ask HN: Why hasn't x86 caught up with Apple M series?
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A Dark Mode PDF Reader Competing with Adobe
2 EbenZergaw 1 8/28/2025, 3:21:33 AM shadowreader.io ↗
I sometimes use the "export" in Apple's Preview.app with the Quartz filters to darken or lighten. "Black" filter does a decent job of thresholding, but sometimes needs a prior lightening or darkening, since the Quartz filters are not adjustable.
And thresholding is mean to images. This should be well within the capability of non-AI software. If such exists, I may have ignored it due to sticker shock, "cloud only" or subscription fees. (Names withheld to protect the guilty. )
Open to suggestions, or consider this a suggestion.