Santekno/tools
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JSON Minifier

Strip whitespace from JSON to produce the smallest valid representation. Round-trip safe.

Processed in your browserUpdated · Jan 2026
Input
0 chars
Output
0 chars

How to use JSON Minifier

Paste your input on the left, choose the options you want, and the output appears instantly on the right. Everything runs in your browser — none of your data is sent to a server.

  • Paste or type your input in the INPUT panel
  • The output regenerates automatically as you type
  • Use Copy to put the result in your clipboard
  • Click Sample to load a working example

What is JSON Minifier?

JSON Minifier parses your input as JSON and emits the same data with all insignificant whitespace removed. Useful for embedding JSON in URLs, headers, environment variables, or anywhere bytes count. The output is guaranteed to round-trip — `JSON.parse(minified)` equals `JSON.parse(original)`. Invalid JSON returns a clear error with the character position when the browser provides it. This tool is part of santekno's developer toolbox — a curated collection of utilities built for engineers who care about speed, privacy, and simplicity.

Common use cases

  • Debugging API payloads and integration issues
  • Inspecting tokens, hashes, or encoded strings during development
  • Generating fixtures and sample data for tests
  • Sharing readable output with teammates in code reviews

FAQ

Yes — the tool parses your input first, so any output IS valid JSON. Invalid input is rejected up-front with an error message.