# B64 CLI

> Use this skill when the user wants to encode or decode files as base64.

- Skill: `javimosch/b64-cli` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/b64-cli`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/b64-cli/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/b64-cli

---


# B64-CLI Plugin

Command line tool for encoding and decoding files as base64.

## Commands

### File Operations
- `b64-cli file encode` — Encode file to base64
- `b64-cli file decode` — Decode base64 to file

## Usage Examples
- "b64-cli file encode --input image.png"
- "b64-cli file decode --input data.b64 --output image.png"

## Installation

```bash
npm install -g b64-cli
```

## Examples

```bash
# Encode file to base64
b64 image.png > image.b64

# Decode base64 to file
b64 -d image.b64 > image.png

# Encode with output file
b64 input.txt -o output.b64

# Decode with output file
b64 -d input.b64 -o output.txt

# Use stdin/stdout
cat file.txt | b64 > encoded.b64
cat encoded.b64 | b64 -d > decoded.txt
```

## Key Features
- Base64 encoding
- Base64 decoding
- File operations
- Stdin/stdout support
- Pipeline operations