Skip to content
ToolQuil
Developer Tools

JSON Formatter

Format, validate, and beautify or minify pasted JSON with syntax highlighting.

Minify strips all whitespace to a single line; Pretty re-indents for readability — both keep Unicode characters and forward slashes unescaped rather than converting them to \u escape sequences.

Tool Interface

Mode
What's this about?
Rating

Related Tools

Featured
Developer Tools

QR Code Generator

Generate a custom QR code with logo and colors.

Use Tool
Developer Tools

Base64 Encoder/Decoder

Encode or decode Base64 strings.

Use Tool
Developer Tools

UUID Generator

Generate UUID/GUID values.

Use Tool
Developer Tools

Hash Generator

Generate MD5/SHA1/SHA256/SHA512 digests.

Use Tool

From the Blog

Developer Tools

MD5 vs SHA-256: Which Hash Should You Actually Use?

Both will generate a hash from your input. Only one of them should be anywhere near anything security-related in 2026.

Jul 15, 2026 Read More
Developer Tools

Why Your JSON Looks Like a Mess (and How to Fix It in One Paste)

API responses and minified config files often come back as one unreadable line. Here's what's actually wrong with it and how formatting fixes it.

Jul 13, 2026 Read More
Developer Tools

What's Inside a JWT? A Plain-English Breakdown

JSON Web Tokens look like gibberish, but they're just Base64-encoded JSON with a signature stapled on. Here's what each part means and how to verify one.

Jul 11, 2026 Read More

Frequently Asked Questions

The pasted text isn't valid JSON — common causes are trailing commas, single quotes instead of double quotes, or unquoted keys. The error message includes the specific parse failure reason.

No — only whitespace and structure change. Values, key order, and data types are preserved exactly.

Pretty adds indentation and line breaks for readability. Minify strips all unnecessary whitespace down to the smallest possible size — useful before pasting into a config file or API payload.