Repair Invalid JSON
Automatically repair invalid or broken JSON in your browser. Paste your JSON and fix common syntax issues like trailing commas, comments, single quotes, and more, with local processing for maximum privacy.
Examples & Usage
Invalid JSON Example
JSON with comments, trailing commas, and single quotes
{
name: 'John Doe',
age: 30,
hobbies: ['reading', 'coding',],
// trailing comma and comments
active: True,
}Repaired JSON
The same data after automatic repair
{
"name": "John Doe",
"age": 30,
"hobbies": [
"reading",
"coding"
],
"active": true
}✅ Local Processing - Data Never Leaves Your Browser
자주 묻는 질문
What is a JSON Repair Tool?
A JSON repair tool automatically fixes common syntax errors in invalid or broken JSON, such as trailing commas, comments, single quotes, and inconsistent boolean/null casing.
What kind of issues can this tool fix?
It can fix many common issues like trailing commas, JavaScript-style comments, single-quoted strings, unquoted keys, and basic boolean/null casing problems. Complex or heavily corrupted JSON may still require manual editing.
How do I use the JSON Repair Tool?
Paste your JSON (even if it is invalid) into the input area or upload a .json file. The tool will try to repair it automatically and show the repaired JSON on the right, which you can copy or download.
Is my JSON uploaded or stored?
No. All repair work happens locally in your browser. We never send your data to a server or store it anywhere.