SwingFiles
Columnar SQL EngineTarget Cap: <50 MBEngine: DuckDB-WASM + TS Stream

Zero-Upload Parquet to CSV / JSON Exporter

Inspect, filter, and convert multi-million-row Apache Parquet datasets in-browser.

Zero-Upload Parquet to CSV / JSON Exporter (Target <50MB)

Drop Files for Local Browser Processing

Auto-detects magic bytes • Zero daily caps • Instant ZIP & P2P Swing chaining

Target Format & Engine Parameters
Compute Engine:

How Zero-Upload Parquet to CSV / JSON Exporter Works Locally

  1. 1
    Mount Local File
    Attach Parquet, CSV, or NDJSON datasets without uploading to any cloud.
  2. 2
    Stream Conversion
    Vectorized columnar parsing serializes rows at memory speed.
  3. 3
    Save or Swing Dataset
    Export clean UTF-8 CSV/JSON or stream directly to a colleague.

Preset FAQs

Is this safe for sensitive enterprise or HIPAA/SOC2 datasets?

Yes. Zero bytes are transmitted over the network during conversion.

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Same-Wi-Fi P2P Radar Discovery

Devices on the same Wi-Fi appear automatically below — zero codes needed

Scanning local Wi-Fi subnet… Open this page on another device to pair automatically
AES-256-GCM file key stays in the peer channel; compare fingerprints before transferringPeer-to-peer · live speed appears during transfer

Phone ↔ PC Room Pairing

VERIFY PEER
6-Digit Swing Room Code
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Drop Unlimited Files to Swing (20GB+ Direct-to-Disk Stream)

Zero cloud upload caps • 64KB chunked SCTP DataChannel • 4MB backpressure • Mobile Screen WakeLock protection

Ready for zero-cloud WebRTC SCTP streaming (64KB chunks, 4MB backpressure control).
WakeLock: STANDBY