software, alternative format is generated too: either JPEG (if JPEG XL
contains losslessly transcoded JPEG), or PNG (leaving off the alpha channel).
-If image file has corresponding .txt, then it will be included as a
-preformatted text on HTML page.
+If image file has corresponding .txt/.html, then it will be included on
+HTML page.
-All images are sorted my modification date and grouped by pages,
-linking them together. If directory contains ".txt", then it will be
-included on the first page as a preformatted text.
+All images are sorted my modification date and grouped by pages, linking
+them together. If directory contains ".txt"/".html", then it will be
+included on the first page.
Following external utilities are called: djxl, jxlinfo, exiftool,
pamtopng, pnmscale, pngcrush, advpng, webpinfo, dwebp, cwebp.