MaisTools
Developer/

JSON Viewer

Paste JSON to explore it as a collapsible tree with color-coded values.

JSON Input
Tree View
Paste valid JSON above to see the tree

About this tool

Paste JSON and explore it as an expandable tree, with value types highlighted by color (strings, numbers, booleans, null) and the ability to collapse and expand sections. Useful for inspecting API responses, navigating large structures without losing your place, or simply understanding the shape of an unfamiliar JSON file.

How to use

  1. Paste JSON in the input box.
  2. See the structure as a tree, with different colors per type.
  3. Click braces and brackets to collapse and expand sections.
  4. Search for or copy specific parts as needed.

Frequently asked questions

Why use this viewer instead of a formatter?
A formatter returns formatted text. The viewer presents the structure as an interactive tree: you can hide branches to focus on what matters, see the hierarchy at a glance, and identify types by color. For large files, interactive navigation is much more practical than reading formatted text.
Is there a size limit?
Works well for most cases. JSON with many megabytes can be slow to render as a tree, especially on older devices. If that's the case, consider filtering the data first or using a tool dedicated to exploring large files.
Can I edit JSON here?
No, this tool is for viewing only. To edit, copy the JSON, modify it in an editor, and paste again. For an integrated viewing and editing experience, consider the formatter or a dedicated JSON editor.