JSON Browser CLI
Run JSON formatting, validation, minification and inspection commands in a browser-based CLI with dry-run previews, structured error logs and downloadable output.
Run a command to see a preview here.
| Command | Description |
|---|---|
format | Pretty-print JSON with two-space indentation. |
validate | Validate JSON syntax and report parse location on errors. |
minify | Remove unnecessary JSON whitespace. |
pretty | Alias for format. |
parse | Parse JSON and return a structured validation result. |
stringify | Parse JSON and serialize it as compact JSON. |
keys | List object keys. |
values | List object values. |
type | Show the JSON value type. |
size | Show character and structural size information. |
stats | Show type, size, keys/items, and nesting statistics. |
sort | Sort object keys recursively. |
sort-keys | Alias for sort. |
flatten | Flatten a JSON object using dot-separated paths. |
unflatten | Rebuild a nested object from dot-separated paths. |
merge | Merge JSON objects. Additional JSON may be supplied as an argument. |
diff | Compare the current JSON with another JSON value. |
get | Read a value using a dot path, e.g. get user.name. |
set | Set a value using a dot path, e.g. set user.name "Alex". |
delete | Delete a value using a dot path. |
exists | Check whether a dot path exists. |
search | Find object keys or string values containing a search term. |
redact | Replace matching object keys with [REDACTED]. |
schema | Generate a simple JSON Schema-like structure from the input. |
help | Show the complete command reference. |
clear | Clear CLI output and logs. |
history | Show recent CLI commands from this browser session. |
version | Show the CLI version. |
about | Show information about the browser-only JSON CLI. |
examples | Show practical command examples. |
reset | Reset the JSON editor to the sample input and clear session state. |
--help | Show command help. |
--version | Show the CLI version. |
--pretty | Format JSON output with two-space indentation. |
--compact | Force compact JSON output. |
--output <file> | Choose the suggested output filename. |
--copy | Copy command output to the clipboard. |
--download | Download command output immediately. |
--dry-run | Preview the command without changing the JSON editor. |
--verbose | Include additional diagnostic details. |
What is JSON Browser CLI?
The DevUtilityKits JSON CLI is a browser-based command-line-style toolkit for working with JSON without installing a terminal package. Use commands to format, validate, minify, inspect, query, transform, compare and analyze JSON, then copy or download the processed result.
Why use this tool?
- Run common JSON command-line operations directly in a browser without installing Node.js, Python, jq or another local utility.
- Work with JSON using focused commands such as get, set, delete, search, sort-keys, flatten, merge and diff.
- Preview supported operations with --dry-run before changing the JSON editor.
- Use --copy, --download and --output options when a command result needs to move into another development workflow.
- Upload a local JSON file up to 10 MB and process supported operations in the browser.
How to use JSON Browser CLI
- Step 1. Paste JSON into the input area or select Upload JSON file to load a local .json document.
- Step 2. Enter a command such as format, validate, get, keys, sort-keys, flatten or diff.
- Step 3. Press Enter or select Run. Add options such as --pretty, --compact, --verbose or --dry-run when appropriate.
- Step 4. Review the output preview and any structured diagnostic information.
- Step 5. Copy the result or download the processed JSON and logs when you need a file for another workflow.
Common use cases
Important notes
- This is a browser-based JSON CLI, not an operating-system shell. It does not execute arbitrary shell commands.
- Supported JSON commands operate on the document in the browser and are designed for local processing.
- The JSON upload limit is 10 MB and the limit is checked before the file is read.
- The CLI supports output actions such as --copy and --download, while the interface also provides explicit Copy output and Download output buttons.
- Use --dry-run when you want to inspect an operation without changing the JSON editor.
More JSON & Data tools
JSON Browser CLI FAQ
What is a JSON CLI?
A JSON CLI is a command-line-style interface for common JSON operations. This browser version lets you format, validate, query, transform, inspect and compare JSON without installing a command-line package.
Does the JSON CLI require installation?
No. The supported JSON operations run in the browser, so you can use the web interface without installing Node.js, Python, jq or another command-line utility.
Which JSON commands are supported?
The CLI includes commands for formatting, validation, minification, parsing, stringifying, keys, values, type, size, statistics, sorting, flattening, merging, diffing, get/set/delete, existence checks, search, redaction and schema workflows, plus help and session commands.
Can I upload a JSON file?
Yes. You can upload a local JSON file up to 10 MB. The file-size limit is displayed beside the upload control and is validated before the browser reads the file.
Can I copy or download JSON CLI output?
Yes. Use Copy output or Download output after a command completes. CLI options such as --copy and --download can also request those actions during command execution.
Is JSON sent to a server?
Supported JSON file and CLI processing is performed locally in the browser. The CLI does not require a server-side shell to execute its JSON commands.
What does --dry-run do?
Dry-run previews a supported operation without changing the JSON editor, which is useful when checking a transformation before applying it.