Observed arrival · 2026-09-15
JSONParse — a local-first viewer for huge JSON files
A browser-based developer tool that opens, searches, compares, validates, formats, and generates code from large JSON and NDJSON files.
Field notes
JSONParse indexes file structure rather than materialising a JavaScript object for every value. Its documented local viewer targets files in the hundreds of megabytes and can index up to 40 million nodes, with the practical ceiling determined by browser memory. The same project exposes formatting, validation, diffing, TypeScript, schema, and mock-data operations through HTTP endpoints and a remote MCP server; those server-facing modes send document content to the service.
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