LaTeX2Image

A Node.js web application that allows LaTeX math equations to be entered and converted to PNG/JPG/SVG images.

For each conversion, an isolated Docker container with a LaTeX installation is started; it compiles the generated .tex file and converts it to an SVG vector image. If required, the SVG file is then converted to a raster image format for PNG/JPG.

Bootstrap and jQuery are used in the web interface, with AJAX calls made to the conversion API endpoint.

Dependencies

Docker

Docker CE with non-root user support.

latex-docker

Docker image containing the required LaTeX packages preinstalled. Pull the image:

docker pull blang/latex:ubuntu

Node.js

Version 6 and onwards should suffice; I made use of v10.14.2.

Global Node.js packages

svgexport

npm install svgexport -g

imagemin-cli

npm install imagemin-cli -g

Local Node.js packages

After cloning or downloading this project, run

cd latex2image-web/
npm install

Usage

To run:

node app.js

The web interface will be accessible at http://127.0.0.1:3001 by default. The port and HTTP URL can be modified inside app.js.

Enter a LaTeX equation, for example \frac{a}{b}, and press Convert. The result will be displayed below.

Notes

The directories temp/ and output/ will be generated automatically inside the latex2image-web/ directory upon first launch.
temp/ stores temporary .tex, .dvi, and .svg files during compilation.
Final output images are stored in output/.

Authors

Joseph Rautenbach - joeraut

Also, see the list of contributors who participated in this project.

License

This project is licensed under the MIT License - see the LICENSE.md file for details

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