Forge Json

Clean Values (Free Online Tool)

Clean noisy JSON by removing nulls, empties, duplicates, and other low-value clutter

Paste your JSON → Get results instantly (no signup)

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Try examples:

→ remove noisy values and remove nulls and empties.

{
"name": "Alice",
"bio": "",
"age": 30,
"address": null,
"tags": [],
"meta": {}
}
Output✓
1{
2  "name": "Alice",
3  "age": 30
4}

Love the result?

Use this exact pipeline in your app, backend, or LLM workflow.

No setup needed. Works with curl, Node, Python.

Uses example data. For edited input, copy from the playground.

Read integration guide

Works with:

  • API responses
  • Nested JSON
  • Arrays & objects

Example: input → output

Input / Output
Input
{
  "name": "Alice",
  "bio": "",
  "age": 30,
  "address": null,
  "tags": [],
  "meta": {}
}
Output
{
  "name": "Alice",
  "age": 30
}

Related tools

Read more on the blog

Advanced usage (optional)

Clean Values

v1.0.0
Cleanup
objectarraydestructive

Description

Clean Values

Remove nulls, empty strings, empty collections, default values, and duplicates from JSON data. Optionally trim whitespace and sort keys. A comprehensive cleanup utility for normalizing messy data.

Operations

Each cleanup operation can be toggled independently. Enable multiple operations to clean data in a single pass.

Remove null values

Delete object keys that have null values at any depth.

Remove empty strings

Delete object keys that have empty string "" values.

Remove empty collections

Delete empty objects {} and empty arrays [].

Remove default values

Delete falsy defaults — 0 and false. Useful for stripping placeholder values.

Remove duplicates

Remove duplicate items in arrays. Compares both primitive values and full objects (deep equality).

Trim whitespace

Trim leading and trailing whitespace from all string values throughout the document.

Sort object keys

Sort object keys alphabetically at all levels.

Configuration

FieldTypeDefaultDescription
Apply topath-picker[]Scope operations to specific paths only (empty = apply everywhere)
Remove null valuesbooleantrueRemove object keys with null values
Remove empty stringsbooleantrueRemove object keys with empty string values
Trim whitespacebooleantrueTrim leading/trailing whitespace from strings
Remove empty collectionsbooleanfalseRemove empty objects {} and arrays []
Remove duplicatesbooleanfalseRemove duplicate items in arrays
Remove default valuesbooleanfalseRemove falsy defaults (0, false)
Sort object keysbooleantrueSort object keys alphabetically

Use Cases

API Response Cleanup

  • Strip null fields from API responses before displaying
  • Remove internal metadata fields (__v, _id) with empty values
  • Trim whitespace from user-submitted form data

Data Normalization

  • Deduplicate records imported from multiple sources
  • Sort keys for consistent ordering across objects
  • Remove placeholder defaults before exporting

Configuration

NameTypeDefaultDescription
Apply topath-picker[]Scope operations to specific paths only (empty = apply everywhere)
Remove null valuesbooleantrueRemove object keys that have null values
Remove empty stringsbooleantrueRemove object keys that have empty string values
Trim whitespacebooleantrueTrim leading and trailing whitespace from all string values
Remove empty collectionsbooleanfalseRemove empty objects {} and empty arrays []
Remove duplicatesbooleanfalseRemove duplicate items in arrays (primitives and objects)
Remove default valuesbooleanfalseRemove falsy defaults (0, false)
Sort object keysbooleantrueSort object keys alphabetically

Examples

AI Prompt
Clean up this JSON and remove noisy values and remove nulls and empties.
{
"name": "Alice",
"bio": "",
"age": 30,
"address": null,
"tags": [],
"meta": {}
}
Output✓
1{
2  "name": "Alice",
3  "age": 30
4}
Config
Remove null values
ON
Remove empty strings
ON
Trim whitespace
OFF
Remove empty collections
ON
Remove duplicates
OFF
Remove default values
OFF
Sort object keys
OFF

API Usage

POST /api/v1/utilities/cleanup.clean-json
Example:
curl -X POST https://your-domain.com/api/v1/utilities/cleanup.clean-json \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"inputs":{"primary":{"name":"Alice","bio":"","age":30,"address":null,"tags":[],"meta":{}}},"config":{"removeNulls":true,"removeEmptyStrings":true,"removeEmptyCollections":true,"removeDefaults":false,"removeDuplicates":false,"trimStrings":false,"sortKeys":false}}'
Response
1{
2  "name": "Alice",
3  "age": 30
4}