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JSON Tools for Notepad++

If you use Notepad++ for configs, logs, or API responses, you usually need the same basics: validate JSON, pretty-print it, minify it, or sort keys before diffing. Use this tool when you don’t have a formatter plugin available (or when you just want a quick, clean result to paste back into Notepad++).

Category: Developer · URL: /tools/json-tools-notepad.html
Tip for Notepad++: if you prefer in-app formatting, look for plugins like JSTool / JSON Viewer in Plugins Admin. This page is a quick offline-capable formatter/validator you can copy from.
 
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Paste JSON (or text) below, choose options, then click an action. The result is ready to copy into Notepad++.

  1. Paste your JSON into the input box.
  2. (Optional) Pick an indent level and enable Sort keys if you want stable diffs.
  3. Click Pretty, Minify, or Validate.
  4. Use Copy Output to paste back into Notepad++.
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Secondary intents covered: Pretty-print JSON to paste into Notepad++, Minify JSON to a single line for logs or transport, Validate JSON and pinpoint parse errors, Sort object keys to make diffs cleaner in Notepad++, Escape raw text into a JSON string literal, Unescape a JSON string literal back to readable text, Quickly convert between readable and compact JSON, Copy results to clipboard and continue editing in Notepad++

FAQ

What are the best JSON tools/plugins for Notepad++?

Common choices are JSTool (format/minify) and JSON Viewer (tree view). If you can’t install plugins, format/validate here and paste back into Notepad++.

Can this format JSON the same way as a Notepad++ formatter?

Yes—this uses standard JSON parsing and outputs clean JSON with configurable indentation, plus optional deep key sorting.

How do I quickly validate JSON before editing in Notepad++?

Paste JSON and click Validate. If it’s valid, you’ll also get a pretty-printed output ready to paste into Notepad++.

What does “Sort keys (deep)” do and when should I use it?

It recursively sorts object keys alphabetically. Use it before diff/compare in Notepad++ to reduce noise from key order changes.

What’s the difference between Pretty and Minify?

Pretty adds newlines/indentation for readability; Minify removes whitespace to produce a compact single-line JSON string.

How do Escape and Unescape help with JSON in Notepad++?

Escape turns raw text into a JSON string literal (useful for configs/logging). Unescape converts a quoted JSON string back into readable text.

Does this tool send my JSON anywhere?

No. The formatter/validator runs locally in your browser and doesn’t make network requests.