# Stream Formatter & NDJSON Viewer Online | JSON Workbench

A secure online viewer and formatter for NDJSON and JSON Lines (.jsonl) data. Load or paste streaming JSON data to inspect and filter entries locally.

Format, inspect, and filter newline-delimited JSON (NDJSON) or JSON Lines (.jsonl) datasets instantly and securely in your browser.

## How to Use
- **1. Paste Your Stream**: Paste NDJSON/JSONL data or drop a .ndjson, .jsonl, .log, or .txt file into the left panel.
- **2. Inspect Frames**: The stats bar shows total lines, valid frames, errors, and estimated file size. Each line is formatted independently.
- **3. Export Results**: Copy the formatted output, download it as a file, or send all valid frames as a JSON array to the JSON Formatter.

## Why Use JSON Workbench Stream Formatter?
### Privacy First
Your data never leaves your browser. All parsing and formatting happens locally.

### Line-by-Line Validation
Each JSON line is independently parsed. Invalid lines are flagged without disrupting the rest of the output.

### Send to Formatter
Convert all valid NDJSON frames into a single JSON array and open it in the full JSON Formatter with one click.


## Frequently Asked Questions
**Q: Is this tool free?**
*A: Yes, completely free and runs 100% in your browser.*

**Q: Is my data safe?**
*A: All processing happens locally. No data is ever sent to any server.*

**Q: What file formats are supported?**
*A: Any newline-delimited text file: .ndjson, .jsonl, .log, .txt*

**Q: What happens with invalid JSON lines?**
*A: Invalid lines are flagged in the output with an (INVALID JSON) label. Valid lines are still formatted normally.*


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*This is a clean, machine-readable version of the tool page. The professional-grade suite for formatting, validating, and comparing JSON and data files. Secure, browser-based, and local-first.*