On 10/3/22 20:57, Leah Neukirchen via ntg-context wrote:
[...] \setupbackend[level=0,compresslevel=0] \starttext Just a line of text. \stoptext [...]
On Acrobat DC on macOS, there is a visible difference between the two files:
Hi Leah, this issue also happens with PDF.js included in Firefox. TeX Gyre Heros is even clearer with dubious hinting. It has been already reported (https://bugzilla.mozilla.org/show_bug.cgi?id=1781022). But even with variable fonts from Adobe (https://github.com/adobe-fonts/source-code-pro/releases/latest), Acrobat has issues with the following code: \definefontfeature [book] [axis={weight=600}] \definefontfamily [mainface] [rm] [SourceCodeVariable] [features={book,none}] \setupbodyfont[mainface, 100pt] \starttext \startTEXpage[offset=1em] AefKkQrt4 \stopTEXpage \stoptext It happens both with LuaMetaTeX and LuaTeX. When playing with certain levels of zooming, some blank spots are displayed inside the characters (printing is fine). BTW, as Hans explained (https://mailman.ntg.nl/pipermail/ntg-context/2022/106840.html), the following top line avoids your printing issue (by setting LuaTeX as the engine, instead of LuaMetaTeX): % engine=luatex Just in case it might help, Pablo