Beautify JSON

About this Tool

AllThatConverter's JSON Beautifier formats minified or poorly structured JSON payloads into cleanly indented, readable code with customizable 2-space, 4-space, or tab indentation, key alphabetization, and powerful log preprocessor presets. Explore complex structures with the interactive Tree Viewer and download formatted .json files instantly. 100% private and client-side in your web browser.

Processed safely on your device

Everything happens in your browser on this device. Your files are never sent to our servers—so you can use it with peace of mind.

How to Use

1

Paste your raw JSON text block into the input viewport area or load a .json file directly.

2

Select a log preprocessor preset (e.g. strip [body] prefix from server logs) if needed, and choose your preferred indentation (2 Spaces, 4 Spaces, Tab) or key sorting.

3

Click the Beautify JSON button to view the indented output, copy it to your clipboard, download it as a .json file, or inspect hierarchical nodes with the interactive Tree Viewer.

Key Scenarios & Use Cases

Extracting Clean JSON from Server & App Logs

Automatically strips log prefixes (timestamps, log levels, [body] markers) from Spring, Node.js, NGINX, or CloudWatch outputs using regex pipelines.

API Response Debugging & Key Sorting

Expands messy one-line REST API payloads into structured, alphabetized JSON for quick bug inspection and readability.

Hierarchical Data Analysis with Tree Viewer

Visually collapse and expand deeply nested objects and arrays in real-time to analyze schema hierarchies.

Config File Formatting & File Export

Standardize package.json or config files with consistent spacing and download formatted .json files on demand.

Frequently Asked Questions (FAQ)

Log preprocessing uses configurable regular expressions to strip log prefixes (such as timestamps, thread IDs, or [body] tags) from each line, reconstructing valid JSON without manual editing.

Yes! You can choose between 2 spaces (default), 4 spaces, Tab characters, or 1 space to match your project's code style.

No, absolutely not. All parsing, preprocessing, and formatting execute 100% locally within your browser sandbox. No data ever leaves your device.

Yes, UTF-8 encoding is fully preserved, ensuring that non-ASCII characters, Asian scripts, and emojis are never corrupted.