logger

var ProgressLogger = log.New(os.Stdout, "webrender.progress: ", log.LstdFlags)

ProgressLogger logs the main steps of the HTLM rendering. It is purely informative and may be turned off safely.

var WarningLogger = log.New(os.Stdout, "webrender.warning: ", log.Lmsgprefix)

WarningLogger emits a warning for each non fatal error, like unsupported CSS properties, font loading or URL resolutions errors. It can be turned off safely, but it is a good source of information if the rendering seems wrong.