JSON Viewer Online

PRIVATE/Runs in your browser. Files are never uploaded.

Convert raw JSON data into an interactive, collapsible tree view. Perfect for exploring arrays, editing complex configurations, and debugging objects.

Raw JSON

Viewer Settings

Theme

Icon Style

Indent Width

Data Types

Object Size

Edit Mode

Tree View

Paste JSON on the left to explore the tree.

Free JSON Viewer Online - Interactive Tree View

Viewing and validating JSON

This tool presents JSON clearly: the structure is indented and levels can be expanded and collapsed.

At the same time it validates the syntax and points to the place where an input is malformed.

How to use it

Paste the JSON. If it is valid the tree appears; otherwise the error position is named.

For very large files, load an extract first: rendering many thousands of entries in full strains the browser.

What it is useful for

Helpful when examining an interface response, since the indented view makes the structure obvious at once.

It also saves time when debugging configuration files, because the offending position is identified directly.

Frequently asked questions

Are comments supported?

JSON has no comments. If your file contains them it will be reported as invalid.

Does my file leave the device?

Processing runs in the browser. Even so, avoid pasting credentials or keys, which configuration files often contain.

Can I edit the JSON here too?

For reformatting there are dedicated tools that beautify and minify JSON.