Extract Tail of CSV Files Online

What is the difference between tail and head for CSV files?

Tail returns the last N rows. Head returns the first N. Use tail to inspect the most recent records in time-ordered data.

Is tail slow on large CSV files?

The tool needs to reach the end of the file, so tail takes longer than head on very large files. For columnar formats like Parquet, it is still fast because the engine can seek efficiently.

Can I combine tail with sorting for CSV files?

Not in this tool. For more control use the SQL Query tool with ORDER BY col DESC LIMIT N to get the top N rows by any sort order.

Is my data private?

Yes — completely. Your file is never uploaded to any server. Everything runs locally in your browser using WebAssembly — processing happens entirely inside your tab. Once you close the tab, nothing is retained.

What is the maximum file size?

The free limit is 50 MB. For larger files, performance depends on your device's available memory — most modern machines handle 500 MB to 1 GB comfortably.