Extract First Column pulls the first value from each row of structured text. It supports CSV-style data, tabs, pipes, spaces, custom delimiters, trimming, and unique values.
Extract First Column converts the input into a focused output and reports how many lines were changed, skipped, selected, or extracted.
Use the processing report to confirm whether the transformation affected the intended rows before copying the result.
Example input: John,Math,90 Jane,English,85 Mike,Science,92. Run the tool to generate the cleaned or extracted output shown in the result panel.
The page handles text locally with JavaScript. It supports CRLF, LF, Unicode text, empty rows, and common copied-document formatting.
Very large files depend on browser memory. Regex options should be tested on a small sample before processing important data.
Paste the relevant text into Extract First Column, choose the options that match your goal, and run the tool. Review the output and metrics to extract the first csv column before copying or downloading the result.
Yes. Extract First Column is designed to help you extract the first column from a tsv file. Test the relevant option on a short sample first, then review and export the processed result.
Test this case in Extract First Column with a short sample first, then apply the same settings to the full text after confirming the output.
Yes. Extract First Column is designed to help you remove duplicate values from the first column. Test the relevant option on a short sample first, then review and export the processed result.
Extract First Column runs locally in the browser. Review the tool-specific metrics and warnings before copying or downloading the result.
| Module | Purpose |
|---|---|
| Input parser | Reads pasted text, uploads, and line breaks. |
| Processing engine | Applies the selected rule to every eligible line. |
| Statistics | Reports total, changed, skipped, matched, or extracted lines. |
| Export | Downloads TXT, CSV, or JSON output. |