bytesagain JSONLint
A real JSON linter and toolkit for the terminal. Validate syntax, pretty-print, minify, compare files, list keys, and extract values by path — all powered by python3.
Commands
| Command | Description |
|---|---|
jsonlint validate <file> |
Check JSON syntax — reports type, element count, file size, and shows error context on failure |
jsonlint format <file> |
Pretty-print JSON with 4-space indentation |
jsonlint minify <file> |
Compact JSON (remove all whitespace), shows bytes saved |
jsonlint diff <file1> <file2> |
Deep structural comparison of two JSON files — shows added, removed, and changed values with dot-paths |
jsonlint keys <file> |
List all top-level keys with types and value previews |
jsonlint extract <file> <path> |
Extract a value by dot-path (e.g. config.database.host), supports array indices like items[0] |
Requirements
python3(usesjsonstdlib module)
Examples
# Validate a config file
jsonlint validate config.json
# Pretty-print API response
jsonlint format response.json
# Minify for deployment
jsonlint minify package.json
# Compare two versions
jsonlint diff old.json new.json
# List what's in a JSON file
jsonlint keys data.json
# Dig into nested values
jsonlint extract config.json database.host