\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{SpookyBaner}
\pdfinfo{
  /Title (json-and-bson.pdf)
  /Creator (Cheatography)
  /Author (SpookyBaner)
  /Subject (JSON \& BSON Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{2D2D86}
\definecolor{LightBackground}{HTML}{F1F1F7}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{JSON \& BSON Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{SpookyBaner} via \textcolor{DarkBackground}{\uline{cheatography.com/173754/cs/36505/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}SpookyBaner \\
  \uline{cheatography.com/spookybaner} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 13th January, 2023.\\
   Updated 15th January, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Example}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{\{ \newline   "id": \seqsplit{"cb7d21b7-b1cf-4a15-af0a-40025f3543f9"}, \newline   "firstName": "John", \newline   "lastName": "Doe", \newline   "maxScore": 4912, \newline   "minScore": -123.14, \newline   "scoreHistory": {[} \newline     \{ \newline       "date": "2017-04-12", \newline       "score": 123 \newline     \}, \newline     \{ \newline       "date": "2019-10-03", \newline       "score": 628 \newline     \}, \newline     \{ \newline       "date": "2021-07-26", \newline       "score": 845 \newline     \} \newline   {]}, \newline   "address": \{ \newline     "number": 4, \newline     "street": "Privet Drive", \newline     "city": "Little Whinging", \newline     "zip": 4859, \newline     "country": "Great Britain" \newline   \}, \newline   "active": true, \newline   "selected": false, \newline   "selectedDate": null \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.76 cm} x{6.24 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{JSON Types}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{String}} & Sequence of zero or more Unicode characters.\{\{nl\}\}Strings are delimited with double quotation marks and support a backslash escaping syntax. \tn 
% Row Count 5 (+ 5)
% Row 1
\SetRowColor{white}
{\bf{Number}} & Signed decimal number that may contain a fractional part and may use exponential E notation. \tn 
% Row Count 8 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\bf{Object}} & Collection of name–value pairs where the names (also called keys) are strings. \tn 
% Row Count 11 (+ 3)
% Row 3
\SetRowColor{white}
{\bf{Array}} & Ordered list of zero or more elements, each of which may be of any type.\{\{nl\}\}Arrays use square bracket notation with comma-separated elements. \tn 
% Row Count 16 (+ 5)
% Row 4
\SetRowColor{LightBackground}
{\bf{Boolean}} & Either of the values true or false. \tn 
% Row Count 18 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{null}} & Empty value, using the word null. \tn 
% Row Count 20 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.8 cm} x{5.2 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{BSON Types}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Double}} & 64-bit floating point number. \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{\bf{Binary Data}} & Byte array. \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{ObjectId}} & 12-byte objectId consists of:\{\{nl\}\}4-byte timestamp\{\{nl\}\}5-byte random value\{\{nl\}\}3-byte incrementing counter. \tn 
% Row Count 9 (+ 5)
% Row 3
\SetRowColor{white}
{\bf{Date}} & Datetime without time zone. \tn 
% Row Count 11 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{Regular Expression}} & Perl compatible regular expression. \tn 
% Row Count 13 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{JavaScript}} & JavaScript code. \tn 
% Row Count 14 (+ 1)
% Row 6
\SetRowColor{LightBackground}
{\bf{32bit integer}} & 32-bit integer. \tn 
% Row Count 16 (+ 2)
% Row 7
\SetRowColor{white}
{\bf{Timestamp}} & Timestamp. \tn 
% Row Count 17 (+ 1)
% Row 8
\SetRowColor{LightBackground}
{\bf{64bit integer}} & 64-bit integer. \tn 
% Row Count 19 (+ 2)
% Row 9
\SetRowColor{white}
{\bf{Decimal128}} & 128-bit decimal floating point. \tn 
% Row Count 21 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{These types complement JSON types.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{1.04 cm} x{6.96 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Escaping Characters}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{}" & double quotes \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}\textbackslash{} & backslash \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}/ & slash \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}b & backspace \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}f & form feed \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\textbackslash{}n & newline \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textbackslash{}r & carriage return \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
\textbackslash{}t & horizontal tab \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\textbackslash{}uXXXX & XXXX is the 4-digit hexadecimal unicode code for the character \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}