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Hazuu Tools

JSON Minifier

Compact your JSON data by removing all whitespace and formatting instantly.

Input JSON
Minified Output
Minified output will appear here...
info

About JSON Minifier

JSON data is often formatted with indentation and line breaks for readability during development. When transmitting JSON over networks or storing it in databases, this formatting adds unnecessary bytes that increase payload size and slow down data transfer.

Our JSON Minifier compacts your JSON by removing all whitespace and formatting while preserving the data structure. It also validates your JSON syntax in the process. All processing happens locally in your browser — your data never leaves your machine.

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How to Use

01

Paste Your JSON

Copy your formatted JSON data and paste it into the input editor on the left.

02

Minify

Click "Minify" to strip all whitespace and compact your JSON into a single line.

03

Copy the Result

Review the size savings, then copy the minified JSON or download it as a file.

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Frequently Asked Questions

What is JSON Minification? expand_more
JSON minification removes all unnecessary whitespace, indentation, and line breaks from JSON data without changing its structure or values. The result is the most compact valid JSON representation, ideal for network transmission and storage.
Does minification validate my JSON? expand_more
Yes. The minifier parses your JSON before compacting it, so it will catch and report any syntax errors such as missing commas, unmatched brackets, or invalid values.
Is my JSON data secure? expand_more
Yes. All processing runs entirely in your browser using native JSON.parse and JSON.stringify. Your data never leaves your machine and is not sent to any external server.
How much space does JSON minification save? expand_more
Savings depend on the original formatting. Prettily indented JSON with 2-space or 4-space indentation typically shrinks by 20% to 50%. Already compact JSON with minimal whitespace will see smaller reductions.