CSV & JSONL Processor

Stream-process CSV, TSV, NDJSON, and JSONL with Miller-style verb chains.

Wrangle tabular and line-delimited data at speed. Stream-process CSV, TSV, NDJSON, and JSONL with Miller-style verb chains — filter, join, pivot, and reshape — with automatic dialect sniffing, all in the browser.

  • Miller-style verb chains for data processing
  • Supports CSV, TSV, NDJSON, and JSONL
  • Joins, pivots, and reshaping
  • Automatic dialect sniffing
  • Streaming, in-browser processing
chayprabs/csv-jsonl-millerFull source code, issues, and releasesOpen →

Spotted a bug or have an idea?

This tool is built in the open and shaped by feedback. If something feels off — or you want a feature — I read every message.