Edit JSON online with errors shown as you type
The result appears here as you type.
Type on the left and the formatted result reformats on the right on every pause. Break the syntax and the right pane switches to the exact line and column, so you find a stray comma while you are still looking at the line you typed it on. A live JSON editor and validator in one: the result reformats on every pause, and a stray comma is flagged on the line you typed it.
If it will not parse
These are the messages people usually arrive with: Unexpected token in JSON, Unexpected end of JSON input, SyntaxError: JSON.parse. Paste the input that produced one and the result pane names the problem and points at it.
How to use the JSON Editor, step by step
Real screenshots of the tool, captured while running it.
- 1
Open the tool
JSON Editor opens empty, with edit on the left and live result on the right.


- 2
Add your input
Paste your own edit, or load the sample. The live result pane fills in as you type.


- 3
Read the result
The live result appears on the right with copy and save beside it.

