JSON Beautifier

Readable again.

Pretty-printed.

Input
Output
No upload
Works offline
No idea what's in your data

Need to beautify thousands of JSON files? The offline bundle handles batches with no size limit. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Paste
Paste minified or messy JSON. It stays on your device.
02
Beautify
fwip formats with proper indentation and syntax highlighting.
03
Copy
Copy the clean JSON. Nothing was ever sent anywhere.
// Why this is different

Your data never leaves your machine.

Most online JSON beautifiers send your data to a server for processing. Your JSON passes through systems you don't control.

fwip works differently. The formatter runs entirely in your browser. Your data is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

How do I pretty-print JSON?▾
Paste minified or messy JSON into fwip. It formats with proper indentation and syntax highlighting instantly in your browser.
Can I set the indentation level?▾
fwip uses 2-space indentation by default, which is the most common standard for JSON.
Does beautifying change the data?▾
No. Beautifying only adds whitespace and line breaks. The data values are untouched.
// Related tools

You might also need.

DATA
JSON Formatter
Format, validate, and pretty-print JSON.
 DATA
JSON Validator
Validate JSON and find syntax errors.
 DATA
JSON Minifier
Remove whitespace from JSON.
 DATA
Diff Checker
Compare two texts. Line-by-line diffs.
 DATA
CSV ↔ JSON
Convert between CSV and JSON formats.
 DATA
Base64
Encode and decode Base64 — text and files.

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Offline. No browser. No internet. No excuses.
$15
This tool
  • JSON Beautifier · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
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$99
Complete suite
  • All 200+ tools · offline
  • No file size limit
  • No daily use limit
  • 3 devices · one payment · updates included
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One-time payment · 3 devices · Updates included · Mac + Windows + Linux