JSON Viewer
Format and validate JSON data easily. Paste your JSON directly into the input area.
Tips
- • Paste JSON directly into the input area
- • Real-time validation shows errors instantly
- • Copy formatted JSON to clipboard with one click
- • Use Escape/Unescape for working with JSON strings in code
- • Syntax highlighting makes JSON easier to read
Frequently Asked Questions
What is the difference between formatted and minified JSON?
Formatted JSON includes indentation, line breaks, and spacing for human readability, making it easy to understand nested structures. Minified JSON removes all unnecessary whitespace, creating compact single-line output ideal for data transmission and storage. Use formatted JSON for development and debugging, minified JSON for production APIs and bandwidth optimization.
How does the JSON validator detect syntax errors?
The validator parses JSON using JavaScript's built-in JSON.parse() method, which checks for proper structure: matching brackets, correct comma placement, valid string quotes, proper key-value formatting, and data type compliance. It highlights common errors like trailing commas, missing brackets, unquoted keys, and invalid values, helping you fix JSON quickly.
Can the JSON viewer handle large JSON files?
Yes, the JSON viewer efficiently handles large JSON files with thousands of lines. It provides syntax highlighting, proper indentation, and collapsible sections for nested objects and arrays. For very large files (several MB), consider using the minify feature first to reduce processing time, or work with smaller excerpts during development.
What are common JSON syntax errors and how do I fix them?
Common errors include: trailing commas after last array/object elements, using single quotes instead of double quotes for strings, unquoted object keys, missing colons between keys and values, unclosed brackets or braces, and incorrect data types. The validator identifies the error location, making it easy to locate and fix syntax issues.
How do I use the JSON tree view feature?
The tree view displays JSON data in an expandable hierarchical structure, making it easy to navigate nested objects and arrays. Click on triangles to expand/collapse sections. This is especially useful for exploring complex JSON APIs, configuration files, and data structures. You can quickly see the overall structure without being overwhelmed by details.
Can I copy formatted or minified JSON from the viewer?
Yes! Use the Copy button to copy the processed JSON to your clipboard. Toggle between formatted and minified views before copying to get your desired output format. The copy function preserves all formatting, making it easy to paste validated JSON into your code editor, API clients, or configuration files.