Group by key
Runnable aboveGroup by key
Input
[{"k":"a","v":1},{"k":"b","v":2},{"k":"a","v":3}]Expected result
{"a":[{"k":"a","v":1},{"k":"a","v":3}],"b":[{"k":"b","v":2}]}- Group by: k
- JSON indentation: minify
Input
0 characters · 0 lines
Output
Output will appear here.
Tool options
Examples
🔒 Processed locally in your browser
Chain with…
These tools accept json output. Run this tool to enable one-click hand-off.
JSON
About Group a JSON Array
Group a JSON Array is a JSON tool that takes json input and returns json output. It runs entirely in your browser, so your input never leaves your device.
- Input
- json input
- Output
- json output
- Where it runs
- In your browser
- Chainable
- Yes
- Options
- 2 configurable
- Examples
- 1 in the catalog
Benefits
- Processed locally in your browser
- Accepts pasted text
- Input can come straight from your clipboard
- Copy the result with one click
- Download the result as a file
- Chain the output directly into another tool
Step by step
How to use Group a JSON Array
5 steps, all from the panel above — nothing leaves your browser.
Paste your input
Type or paste your json into the input panel above — it keeps a running character and line count as you type.
Set the options
Adjust the 2 tool options — JSON indentation, Group by.
Run the tool
Run it — the work happens in your browser, so nothing is uploaded.
Collect the result
The result appears in the output panel as json output. From there you can copy it with one click, download it as a file.
Chain it onward
The chain panel lists tools that accept this output; sending the result opens the next tool with its input already filled in.
Formats
Supported formats
What Group a JSON Array accepts and what it hands back.
Accepts
Pasted json content; no file upload is involved.
Produces
Returned as json output; no specific file format is declared for it. From the output panel you can copy it with one click, download it as a file.
Configuration
JSON indentation
select · default 2
Group by
text · default k
Examples
Examples and use cases
1 catalog example for Group a JSON Array. Runnable examples can be loaded from the examples panel above.
Related tools
JSON Formatter
Prettify or minify JSON with configurable indentation and optional key sorting.
JSONIn-browser
Minify JSON
Remove all insignificant whitespace from JSON.
JSONIn-browser
Validate JSON
Check whether text is valid JSON and summarize its structure.
JSONIn-browser
JSON to CSV
Convert a JSON array of objects into CSV rows.
JSONIn-browser
Lines to JSON Array
Turn plain text lines into a JSON array of strings.
JSONIn-browser
JSON to List
Flatten a JSON array into text lines.
JSONIn-browser
FAQ
Frequently asked questions
Answers for Group a JSON Array, taken from the tool's own catalog definition.
Does Group a JSON Array run in my browser or on a server?
It runs entirely in your browser — the work happens on your device.
What input does Group a JSON Array accept?
json input.
What do I get back, and what can I do with it?
The result is json output. From the output panel you can copy it with one click, download it as a file.
Can I chain Group a JSON Array into another tool?
Yes. After a run, the chain panel lists tools that accept json output (12 compatible tools in the catalog right now) and hands the result across with one click.
Does Group a JSON Array need any configuration?
Yes — the tool options panel above exposes 2 settings: JSON indentation, Group by.
Do I need an account?
No. Accounts only add conveniences: favourites, recent-tool history and saved workflows.
What is included with Group a JSON Array?
Processed locally in your browser; Accepts pasted text; Input can come straight from your clipboard; Copy the result with one click; Download the result as a file; Chain the output directly into another tool.
Get started
Start using Group a JSON Array
The tool is ready above — add your json and run it. It all happens in your browser, so nothing is uploaded.