spark ☆

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Description:
Sparklines for the shell

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: sparklines visualization cli terminal data

Install: brew install spark

About:
Spark is a command-line tool that generates sparklines—tiny, text-based line graphs—from input numbers. It allows developers to quickly visualize data trends, such as CPU usage or API latency, directly in the terminal without needing complex plotting tools.

Key Features:

Generates Unicode sparkline graphs from numerical input
Supports multiple input formats including stdin and arguments
Simple, dependency-free binary for fast execution
Works seamlessly in shell scripts and pipelines

Use Cases:

Visualizing real-time server metrics in terminal dashboards
Embedding trend graphs in CLI application output
Quickly analyzing data sets from log files or command output

Alternatives:

gnuplot – Gnuplot is a full-featured plotting utility that can generate complex charts, whereas spark is minimal and focused solely on simple inline sparklines.

Version History

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