R Markdown - changing font size and font type in html output

Question

I am using R Markdown in RStudio and the knit HTML option to create HTML output  However  the font used in the ouput for plain text blocks is rather small and I would like to change it to a differnt font and increase the font size  Can someone show an example how to set the output font - workable without a lot of knowledge in html   So far I tried at the top of my markdown document  but this doesn t work    --- fontsize  24pt ---

User · Answer

To change the font size  you don t need to know a lot of html for this  Open the html output with notepad     Control F search for  font-size   You should see a section with font sizes for the headers  h1  h2  h3        Add the following somewhere in this section   body     font-size  16px      The font size above is 16 pt font  You can change the number to whatever you want

User · Answer

I had the same issue and solved by making sure that 1  when you make the style css file  make sure you didn t just rename a text file as  style css   make sure it s really the  css format  e g  use visual studio code   2  put that style css file in the same folder with your  rmd file  Hopefully this works for you

User · Answer

I would definitely use html markers to achieve this  Just surround your text with  lt p gt  lt  p gt  or  lt font gt  lt  font gt  and add the desired attributes  See the following example    lt p style  font-family  times  serif  font-size 11pt  font-style italic  gt      Why did we use these specific parameters during the calculation of the fingerprints   lt  p gt    This will produce the following output    compared to     This would work with Jupyter Notebook as well as Typora  but I m not sure if it is universal   Lastly  be aware that the html marker overrides the font styling used by Markdown

User · Answer

You can change the font size in R Markdown with HTML code tags  lt font size  1  gt  your text  lt  font gt     This code is added to the R Markdown document and will alter the output of the HTML output   For example    x000D   x000D    lt font size  1  gt  This is my text number1 lt  font gt   x000D   x000D    lt font size  2  gt  This is my text number 2  lt  font gt  x000D    x000D    lt font size  3  gt  This is my text number 3 lt  font gt   x000D    x000D    lt font size  4  gt  This is my text number 4 lt  font gt   x000D    x000D    lt font size  5  gt  This is my text number 5 lt  font gt   x000D    x000D    lt font size  6  gt  This is my text number 6 lt  font gt  x000D   x000D   x000D

User · Answer

I think fontsize  command in YAML only works for LaTeX   pdf  Apart  in standard latex classes  article  book  and report  only three font sizes are accepted  10pt  11pt  and 12pt    Regarding appearance  different font types and colors   you can specify a theme   See Appearance and Style   I guess  what you are looking for is your own css  Make a file called style css  save it in the same folder as your  Rmd and include it in the YAML header   --- output    html document      css  style css ---   In the css-file you define your font-type and size      Whole document     body    font-family  Helvetica    font-size  16pt       Headers    h1 h2 h3 h4 h5 h6    font-size  24pt

User · Answer

These answers are overly complicated  You can change the main body font size  as well as any other CSS you might want to change  simply by embedding CSS directly into the Rmarkdown document using the html  lt style gt  tag  You do not need an entire CSS file for something so simple  If you are doing a lot of CSS then use a separate CSS file  If you are just modifying a couple of simple things I would do it like this  --- title   quot Untitled quot  author   quot James quot  date   quot 9 29 2020 quot  output  html document ---   lt style type  quot text css quot  gt    body    font-size  12pt     lt  style gt        r setup  include   FALSE  knitr  opts chunk set echo   TRUE

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