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JSON Minifier

Minify JSON by stripping whitespace while keeping it valid.

Quick answer

Minify JSON by stripping whitespace while keeping it valid.

How do I use the JSON Minifier?

  1. 1

    Paste JSON.

  2. 2

    See the compact output.

  3. 3

    Copy the minified string.

What is the JSON Minifier?

The JSON Minifier removes every unnecessary space and newline from your JSON, producing the smallest possible valid string. Perfect for API payloads and config files where size matters.

Who is the JSON Minifier for?

Developers optimising payloads, DevOps engineers packing configs, mobile developers minimising bandwidth, and API consumers.

Why use the JSON Minifier?

  • Guaranteed-valid output.
  • Preserves key order.
  • Instant preview.
  • Handles very large payloads.
  • Runs offline.

When should I use the JSON Minifier?

  • Shrinking API request bodies.
  • Packing config into environment variables.
  • Bandwidth-sensitive mobile apps.
  • Storing JSON in a single-line log.
  • Reducing storage costs.

Is the JSON Minifier safe and private?

Yes. This tool runs entirely inside your browser - your text is never uploaded, stored on our servers or shared with third parties. You can even disconnect from the internet after the page loads and it will keep working. That makes it safe for confidential notes, drafts, private messages and unpublished work.

How do I get the best results from the JSON Minifier?

  • Use JSON Formatter to reverse.
  • For lots of small values, minification savings are largest.
  • Pair with Base64 Encoder to inline compact JSON.
  • Never minify JSON meant for humans to read.

Frequently asked questions

Is the output still valid?

Yes - this tool re-parses and re-emits your JSON, guaranteeing validity.

How much space does it save?

Typically 30–60% on pretty-printed JSON. Actual savings depend on the input.

Is my JSON uploaded?

No - minification runs locally.

Does it change key order?

No - keys keep their original order.

Related formatters and text tools

JSON Formatter

Pretty-print JSON with a chosen indent width and clear error messages.

Open

JSON to Text

Extract every string and number from JSON as plain text - one value per line.

Open

Text Cleaner

One-click cleaner - trim, collapse spaces, normalise quotes and strip weird characters.

Open

Whitespace Remover

Strip all whitespace - spaces, tabs and newlines - from any text.

Open

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