Toolsly
Formatter

JSON Formatter

Paste any JSON and reformat it with 2-space, 4-space or tab indentation, or minify it to a single line. Invalid JSON is reported with a clear error message and the position the parser stopped at. Everything runs entirely in your browser — your data stays on this page.

Privacy

Runs entirely in your browser — nothing is sent to any server.

Cost

Free. No sign-up, no watermark.

Type

Formatter

Related tools

Tools that work with the same formats — most users open one of these next.

Text & EncodingOnline

QR Code Reader

Scan a QR code from any image and decode it to text — free, online, runs entirely in your browser.

png→txt
Text & EncodingOnline

QR Code Generator

Generate a QR code from any text, URL or contact data — pick error correction and scale, get a PNG.

txt→png
Text & EncodingOnline

File to Hex Dump

Convert any file's bytes to a hex dump (with ASCII sidecar), plain hex, C array or comma-separated bytes.

bin→txt
Text & EncodingOnline

Hex to Binary File

Parse a hex dump or hex string back into a binary file — strips offsets, ASCII columns, prefixes and separators automatically.

txt→bin
Text & EncodingOnline

Wi-Fi QR Code Generator

Generate a Wi-Fi QR code as a PNG — scanning it auto-joins the network. Supports WPA / WEP / open networks and hidden SSIDs.

txt→png
Text & EncodingOnline

vCard QR Code Generator

Generate a QR code that contains a digital business card (vCard) — scanning it lets the phone save the contact in one tap.

txt→png

Frequently asked

Is JSON Formatter free to use?

Yes. JSON Formatter is completely free with no sign-up, no watermark, and no usage limits. Toolsly does not charge for any of its tools.

Do my files and data stay private?

Yes — JSON Formatter runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.

How does JSON Formatter work?

Open JSON Formatter, paste or fill in the input fields, and the result updates instantly. Everything runs in your browser — no upload, no waiting.

Which browsers does JSON Formatter support?

Any modern browser works — Chrome, Firefox, Safari, and Edge on desktop and mobile. JSON Formatter uses standard web APIs and does not require any plugin, extension, or sign-up.