# recipe
Posts tagged "recipe"
Why does my PDF show tofu boxes for Japanese?
Empty rectangles instead of Japanese characters mean your PDF couldn't find glyphs for those codepoints. Here are the four causes and the fixes.
How do I use IPAex Gothic in gpdf?
Register ipaexg.ttf with gpdf.WithFont. IPAex Gothic ships a single Regular weight under the IPA Font License — bold emphasis has to be synthesized or paired.
How does the 12-column grid work in gpdf?
gpdf's 12-column grid uses r.Col(span, fn) where span is 1–12. Column width is (span/12) of the row. No breakpoints, no gutters, predictable by design.
How do I embed a Japanese font in gpdf?
Register a Japanese TrueType font with gpdf.WithFont at document construction. Three lines, subset embedding happens automatically, no CGO.
How do I use Noto Sans JP with gpdf?
Register the static NotoSansJP-Regular.ttf with gpdf.WithFont. Skip the variable font — gpdf's pure-Go parser does not read fvar tables. Subsetting lands around 30 KB.