Highlight JSON Syntax

Highlight JSON Syntax adds color-coded styling to your JSON so it’s easier to read, debug, and inspect. Paste or import, then preview live.

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
 
Options
  Pretty print
  
  
How to Use:
Paste JSON into the input box on the left or use “Choose File” to load it from disk. The tool will parse the input and render a formatted, syntax-highlighted preview on the right. Keys, strings, numbers, booleans, and nulls are all styled in distinct colors for easy scanning. If the JSON is invalid, you’ll get an error message instead. Use “Copy Output” to copy the styled result or hit “Clear All” to reset.
What Highlight JSON Syntax can do:
Highlight JSON Syntax gives you a clean, readable version of any JSON, styled with colored spans to help you quickly identify different data types. It’s useful when inspecting big blobs of data, reviewing nested structures, or trying to spot missing values. Unlike raw JSON dumps, this tool separates keys and values visually without changing the data itself. It runs entirely in your browser and updates as you type.
Example:
Input:
{
  "name": "Alice",
  "active": true,
  "score": 87.5,
  "tags": ["user", "admin"],
  "meta": null
}
Output:Visually rendered as:
  • "name" in red
  • "Alice" in blue
  • true in green
  • 87.5 in orange
  • null in gray
All color-coded for clarity.
Common Use Cases:
Highlight JSON Syntax is great for developers reviewing complex objects, debugging API responses, formatting JSON for presentations, or prepping examples for documentation. It saves time, reduces errors, and makes raw JSON easier to scan and understand at a glance.
Useful Tools & Suggestions:
If you’re prepping for a clearer view, Add Spacing to JSON can be used first to make everything more readable. Then, once the layout’s cleaner, Extract JSON Keys helps you focus on the parts that actually matter.
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