JSON Viewer — Pretty Print & Visualize JSON Online
Paste raw JSON and instantly view a pretty-printed, indented version. Free online JSON Viewer with syntax highlighting powered by Ace editor.
JSON Input
Pretty JSON
What is a JSON Viewer?
A JSON Viewer is a tool that takes raw or minified JSON text and renders it in a human-readable, pretty-printed format with proper indentation.
This viewer uses 2-space indentation and syntax highlighting to make even deeply nested JSON structures easy to read and understand.
How to Use
Paste your JSON
Paste raw, minified, or already-formatted JSON into the left editor panel.
View the result
The right panel automatically pretty-prints your JSON with 2-space indentation. If the JSON is invalid, an error message is shown.
Copy or Download
Use the Copy or Download button to save the formatted output.
Frequently Asked Questions
What indentation does this viewer use?
The JSON Viewer always outputs JSON with 2-space indentation for readability.
Does it work with large JSON files?
Yes. The Ace editor handles large files efficiently. For very large files, use the Upload button to load directly from disk.
Is my data sent to a server?
No. All processing happens entirely in your browser. Your JSON data never leaves your machine.