tcv

A command-line tool for converting between common data formats. All conversions happen locally on your machine.

Installation

npm install -g tcv

Usage

JSON/YAML Conversion

# Convert JSON to YAML
tcv json2yaml config.json
tcv json2yaml config.json -o output.yaml

# Convert YAML to JSON
tcv yaml2json docker-compose.yml
tcv yaml2json docker-compose.yml -o config.json

# Pipe input
echo '{"name":"test"}' | tcv json2yaml

Base64

# Encode
tcv base64 encode "Hello World"
echo "Secret message" | tcv base64 encode

# Decode
tcv base64 decode "SGVsbG8gV29ybGQ="

Hash Generation

tcv hash md5 "password"
tcv hash sha1 "password"
tcv hash sha256 "password"
tcv hash sha512 "password"

# Hash file content
cat file.txt | tcv hash sha256

Hex/Binary Conversion

# Hex to Binary
tcv hex2bin "FF00AB"

# Binary to Hex
tcv bin2hex "11111111"

# Hex to C-Array (for embedded systems)
tcv hex2c "DEADBEEF"

Cron Expression Decoder

tcv cron "0 9 * * 1-5"
# Output: At 09:00 AM, Monday through Friday

tcv cron "*/15 * * * *"
# Output: Every 15 minutes

JWT Operations

# Decode JWT
tcv jwt decode "eyJhbGc..."

# Encode JWT (basic, for testing)
echo '{"header":{"alg":"HS256"},"payload":{"sub":"1234"}}' | tcv jwt encode

URL Encoding

# Encode
tcv url encode "hello world"

# Decode
tcv url decode "hello%20world"

Text Transformations

tcv text upper "hello world"      # HELLO WORLD
tcv text lower "HELLO WORLD"      # hello world
tcv text camel "hello world"      # helloWorld
tcv text snake "helloWorld"       # hello_world
tcv text kebab "helloWorld"       # hello-world
tcv text pascal "hello world"     # HelloWorld

All Commands

tcv json2yaml [input]              Convert JSON to YAML
tcv yaml2json [input]              Convert YAML to JSON
tcv base64 <encode|decode> [input] Base64 encode/decode
tcv hash <algorithm> [input]       Generate hash (md5, sha1, sha256, sha512)
tcv hex2bin <hex>                  Convert Hex to Binary
tcv bin2hex <binary>               Convert Binary to Hex
tcv hex2c <hex>                    Convert Hex to C-Array
tcv cron <expression>              Decode cron expression
tcv jwt <decode|encode> [input]    JWT operations
tcv url <encode|decode> [input]    URL encode/decode
tcv text <operation> [input]       Text transformations

Options

• -o, --output <file> - Write output to file
• -h, --help - Display help
• -v, --version - Display version

Privacy

All conversions happen locally. No data is sent to any server.

License

MIT

Links

• npm: https://www.npmjs.com/package/tcv
• Website: https://techconverter.me