Partial success: I haven't been able to convert the images to jpg proper, but I've been at least been able to enable jpeg compression, thus making the resulting pdfs much smaller: % enable compression for tiffs \startluacode local function compress(oldname, newname, compression) if not compression or compression == "" then compression = "jpeg" end os.execute(string.format( 'gm convert -compress %s "%s" "%s"', compression, oldname, newname) ) end -- Set the PDF and default TIFF converters to the above function. figures.converters.tif.pdf = compress figures.converters.tif.default = compress \stopluacode Best, Denis Von: denis.maier@unibe.ch Gesendet: Freitag, 21. Juli 2023 13:25 An: ntg-context@ntg.nl Betreff: [NTG-context] Convert tif to jpg (instead of pdf) Hi, According to the documentation, it is possible to automatically convert TIFF images to a format supported by LMTX via GraphicsMagick. https://wiki.contextgarden.net/Using_Graphics#Image_Conversion However, by default this produces pdf files which are quite huge. is it possible to instruct grapichsmagick to convert tiff images to jpg instead of to pdf ? There's an example on the linked page in the documentation, but I have to admit that I don't quite understand what I should do... Best Denis