About GigaSieve

GigaSieve helps you open and analyze massive files directly in your browser. There is no upload, no server-side processing, and no account required. Your data stays on your device.

What it is for

• Exploring huge logs (nginx, Cloudflare, app logs)
• Filtering large CSVs without Excel crashes
• Reading JSONL and extracting fields quickly

How it works

Files are streamed in small chunks using modern browser APIs. Parsing and analysis run inside Web Workers, keeping the UI fast even on large inputs.

Limitations

• Results depend on your device performance
• Some features are read-only by design
• Very large files may take time to index