latex2img

latex2img is a simple tool to generate an image from latex expression, which can be easily embedded in presentations.

Dependencies

• A C++ compiler.
• pdflatex

Build Instructions

git clone https://github.com/piyush-ppradhan/latex2img
cd latex2img
mkdir build && cd build
cmake .. && make

Usage Instructions

# If the latex expression is defined in a file
latex2img -font_size 12 -baselineskip 16 -bg "#000000" -fg "#111111" -file "filename" \
-output "output_name" -border 2 -preview 0
# If the expression is simple enough, it is more convenient to pass it as a string
latex2img -font_size 12 -baselineskip 16 -bg "#000000" -fg "#111111" -string "$\alpha = 2$" \
-output "output_name" -border 2 -preview 0

• font_size, baselineskip are defined in units of pt while border is defined in cm.
• filename must contain valid latex expression.
• If the binary and the file are not in same directory, the filename must include the fullpath.
• output_name must not include the file extension.
• The tool generates pdf files, which can be converted to any image format.

Default Values

• font_size: 12
• baselineskip: font_size + 4
• bg: "#ffffff"
• fg: "#000000"
• border: 0
• output: generated_expression. This is the filename prefix for all files generated.
• preview: 0. If it is set to 1, the images are generated in preview i.e., with equation number.
• Atleast one of string or file must be specified.

Preview vs Non-preview mode

Preview mode

• If preview is set to 1, then images are generated in "preview" mode.
• In this case, to get equation number, wrap the code in \begin{equation} ... \end{equation}:

  \begin{equation}
      alpha = 2 \tag{10}
  \end{equation}

• \tag{...} can be used to set a specific equation number.

Non-preview mode (default)

• If preview is set to 0
• In this case, wrap the code in $ ... $:

  $alpha = 2$