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JSONL Viewer and Editor for Large Files

JSONL.co is a free browser-based tool for opening, viewing, editing, validating, formatting, and converting JSONL files. It is designed for developers, data workers, and anyone handling large JSONL datasets or logs. The site focuses on local-first processing, privacy, and no file uploads, with support for files up to 1GB. It also includes related converters and guides for JSON, CSV, YAML, and NDJSON, plus features such as syntax highlighting, streaming, and file validation.

Domain: jsonl.co

Added: 2026-11-02
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csv converter file validator json editor json viewer jsonl local processing ndjson streaming syntax highlighting

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