jspprint 0.1.1

A CLI tool for viewing and manipulating JSON files

jspprint

A CLI tool for viewing and manipulating JSON files. Pretty-prints JSON with syntax highlighting by default, supports filtering by keys, and allows in-memory modifications for easy piping — without altering the original file.

Features

• Pretty-print JSON with syntax highlighting (default behavior)
• Filter by key(s) to extract and display specific parts of a JSON structure
• In-memory modifications — add, update, replace, or delete values in the output without touching the source file
• Merge from file or stdin — set a key's value to the contents of another JSON file, or pipe JSON in via stdin
• Stdin as input — read JSON from stdin instead of a file (cat data.json | jspprint)
• Pipe-friendly — output can be piped to other commands or redirected to files

Planned

• CSV, XML, and YAML support

Tech Stack

• Python
• Rich for colored/syntax-highlighted output
• Typer for argument parsing

Installation

pip install jspprint
# or
pipx install jspprint

Usage

# Pretty-print a JSON file with syntax highlighting
jspprint data.json

# Read JSON from stdin
cat data.json | jspprint

# Filter by key
jspprint data.json name

# Filter by nested key path
jspprint data.json users.0.email

# Modify a value in the output (file is not changed)
jspprint data.json --set name=updated

# Delete a key from the output
jspprint data.json --del obsoleteField

# Set a key's value from another JSON file
jspprint data.json --set config=@overrides.json

# Same thing via stdin pipe
cat overrides.json | jspprint data.json --set config=@-

# Output compact JSON (single line, no highlighting)
jspprint data.json --compact
jspprint data.json -c

# Pipe the result
jspprint data.json --set env=prod -c | kubectl apply -f -

License

MIT