base91 ☆

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Description:
Utility to encode and decode base91 files

Type: Formula | Latest Version: 0.6.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: encoding decoding base91 utility cli

Install: brew install base91

About:
Base91 is a command-line utility that encodes binary data into a highly efficient ASCII text format and decodes it back to its original form. It offers better data density than Base64, making it ideal for compressing data for transmission or storage in text-only environments. This tool provides a simple interface for handling the base91 encoding scheme directly from the terminal.

Key Features:

Efficient ASCII encoding and decoding
Higher data density compared to Base64
Simple command-line interface
Lightweight and fast

Use Cases:

Encoding binary data for transmission over text-based protocols
Embedding binary assets directly into source code
Compressing data for storage in text-based configuration files

Alternatives:

base64 – Base64 is ubiquitous but produces longer strings; base91 offers better compression for the same data.
btoa – A simpler, older tool for ASCII encoding, but less efficient than base91.

License: BSD-3-Clause

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina, arm64_linux, x86_64_linux

Version History

Detected	Version	Rev	Change	Commit
Sep 13, 2025 11:53am		0	VERSION_BUMP	4d79c1ab