Live conversion
JSON to NDJSON streaming converter
Stream JSON to NDJSON with detection, transforms, and performance telemetry.
Command Center
Detect → schema → convert
Drop a file and watch Convert Buddy detect structure, preview fields, and convert instantly.
Drop a file to detect + convert
Supported formats: CSV, JSON, NDJSON, XML
Detection status
IdleFormat: JSON
Structure: Awaiting detection.
Fields: 0
Estimated records: —
Input: Awaiting file
Output format
Choose your destination format.
Performance telemetry
LiveThroughput
0.0 MB/s
Records/sec
0
Records processed
0
Elapsed
00:00
Bytes in/out
0.0 MB / 0.0 MB
Output
Output will appear here after conversion completes.
Format: JSON → NDJSON
Output files are UTF-8 text. JSON output is intentionally minified for streaming performance, so it may open as a single line until you run your editor's format command.
What this conversion does
Convert Buddy reads JSON records as a stream and emits NDJSON without loading the entire file into memory. This keeps conversion safe for multi-GB inputs.
Why convert JSON to NDJSON
NDJSON unlocks downstream analytics, APIs, and transformation pipelines while preserving structure. Streaming conversion lets you keep control of memory and throughput.
How it works
The Rust + WebAssembly core parses input in chunks, applies inline transforms, and emits telemetry at fixed intervals. Web Workers keep the UI responsive during conversion.
Privacy & performance guarantees
All processing runs locally in your browser. Ads stay outside the converter UI, and performance metrics are transparent and deterministic.
FAQ
Can I override detected settings? Yes, open the advanced panel and tune the configuration.
Does it work for large files? Streaming keeps memory usage low even for multi-GB inputs.
Can I apply transforms? Yes, transformations are applied inline during conversion.