JSON File Viewer
Inspect and format uploaded JSON data files with collapsible tree views.
Base64 File Encoder / Decoder
100% Client-Side. Files never upload to any remote server.
About JSON File Viewer
The Interactive JSON File Viewer & Tree Explorer parses, navigates, searches, and filters large JSON documents with collapsible object nodes, type badges, path breadcrumbs (`data.users[0].name`), and fast schema validation.
How to Use JSON File Viewer
Step 1
Upload a `.json` file or paste raw JSON into the editor.
Step 2
Use the search bar to filter keys or values across the entire tree.
Step 3
Click node arrows to expand or collapse nested objects and arrays.
Step 4
Click any property to copy its path or value.
Practical Use Cases for JSON File Viewer
Navigating Deeply Nested API Responses
Explore massive multi-megabyte JSON responses with expandable node trees, search filtering, and 1-click JSONPath copying.
JSON Data Auditing & Type Verification
Inspect data types (String, Number, Boolean, Array, Object, Null) and detect syntax errors with line-number precision.
Input & Output Examples
Exploring Complex User Dataset JSON
Uploaded 2.4MB API dataset JSON file
Interactive collapsible tree with 1,200 records, node counters, type badges, and real-time search query bar
Key Features & Performance
- ✓Interactive collapsible tree view: expand/collapse all nodes or search by key/value.
- ✓Displays node counts and color-coded data type badges (String, Int, Float, Bool, Null).
- ✓Breadcrumb navigation: click any leaf node to copy its exact JavaScript path (`response.data.items[2].id`).
- ✓100% Client-Side memory parsing.
- ✓1-Click Copy formatted JSON and JSONPath.
Key Terminology & Definitions
JSON Tree Traversal
Navigating hierarchical JSON data structures by moving through parent objects, arrays, and leaf key-value pairs.
JSONPath Notation
A query language for JSON used to select and address specific nodes within a JSON object tree (e.g. `$.store.book[*].author`).