Paste your data or upload a file, preview the converted result, and download. No coding needed.
Input
Click to upload or drag and drop
.json, .csv, or .txt files
Options
Frequently asked questions
We support arrays of objects (the most common format), like [{"name":"Alice"},{"name":"Bob"}]. Nested objects are flattened using dot notation (e.g., address.city).
Comma, semicolon, tab, and pipe. Choose the delimiter that matches your data in the Options section.
No. All conversion happens locally in your browser. Your data never leaves your computer.
Since everything runs in your browser, the limit depends on your device's memory. In practice, files up to ~50MB work smoothly on modern devices.
Yes! The tool works both ways. Switch to "CSV to JSON" mode, paste or upload your CSV, and get clean JSON output instantly.
Yes. The converter fully supports Unicode and UTF-8 characters including accented letters, CJK characters, and emoji. Your data is preserved exactly as-is.