Termplot

Beautiful plots in your terminal.

Screenshot

Overview

Termplot renders the most beautiful and advanced plots directly inside your terminal by running a web app inside an ephemeral web browser, taking a screenshot, and using modern escape codes to render the image.

Installation

npm install -g @termplot/termplot

Usage

Simply pipe a Plotly configuration JSON file directly into Termplot in any terminal that supports the iterm image protocol:

cat plotly-config.json | termplot

You can see examples in ./examples.

Learn how to write Plotly configuration files in their documentation.

Compatibility

Termplot only supports the iTerm image protocol, which works in iTerm2 and Wezterm.

Plotting tools

Termplot currently only supports Plotly plots.

How it Works

Termplot finds an open port, runs a React Router / express web app, runs a puppeteer web browser, and navigates to the web app, loading the desired plot, taking a screenshot of the plot, rendeirng the screenshot in the terminal, and then exiting.

Dependencies

These tools make Termplot possible:

• plotly.js
• puppeteer
• express
• react-router
• ansi-escapes

TODO

• [x] Cat files into termplot and render the images in iTerm2/Wezterm
• [ ] Support config templates for easy plotting
• [ ] Support png file output
• [ ] Support other image protocols for other terminals
• [ ] Support other plotting libraries
• [ ] nushell plugin to hold browser open for faster rendering
• [ ] Provide serve alternative for viewing interactive plots in a browser

Copyright (C) 2025 Ryan X. Charles