JSON File Viewer
Upload and view JSON files with syntax highlighting, collapsible sections, and validation. Perfect for inspecting API responses and configuration files.
Click to upload or drag and drop a JSON file
Supports .json files
Why use this tool?
Viewing JSON files in the browser is fast and privacy-friendly. Get syntax highlighting and collapsible sections without installing software.
- Syntax highlighting — color-coded keys, strings, numbers, and booleans.
- Collapsible sections — expand and collapse nested objects and arrays.
- Validation — instantly see if your JSON is valid.
- Privacy — all processing happens in your browser.
How to use
- Click the upload area or drag and drop a JSON file.
- The JSON will be displayed with syntax highlighting.
- Click the arrows to expand or collapse nested structures.
- Copy the formatted JSON or download it if needed.
Frequently Asked Questions
Yes, completely free with no sign-up required.
The tool supports .json files and any file containing valid JSON text.
This tool focuses on file uploads. For pasting JSON directly, try our JSON Formatter tool.