Guides
Problem-solving tutorials. Learn how to analyze huge files without uploading them anywhere.
How to Open 1GB CSV in Browser
Excel crashed? Here's how to preview and filter massive CSVs without any software.
How to Analyze nginx Access Log
Find 5xx errors, top IPs, and slow requests from your server logs.
Regex Extract from Huge Log File
Pull specific fields using regex without writing scripts.
Remove PII from Logs Locally
Mask emails, phone numbers, and IPs before sharing logs.
Why CSV is Slow (and How to Speed Up)
Understanding CSV parsing bottlenecks and streaming solutions.
JSON vs JSONL: Which to Use?
For large datasets, JSONL wins. Here's why.
More guides coming soon. See Recipes for one-click analysis.