Open large JSON, JSONL, and NDJSON files without loading the whole file into RAM. Browse records in a two-pane view, expand nested data, search and filter matches, jump to a record, and copy values or key paths. A 21.5GB JSONL used about 69MB of RAM in an Apple Silicon benchmark. Read-only; your files stay on your Mac. Free at any file size, with optional tips only. Requires macOS 14+.