CSV Column Extractor: Trim CSVs to What You Actually Need
Exported CSVs from CRMs, databases, and analytics tools routinely include dozens of columns you do not need. Instead of opening Excel and deleting columns manually, click the columns you want to keep and get a trimmed CSV instantly.
Toggle-Button Column Selection
After pasting your CSV, every column header appears as a toggle button. Enabled (highlighted) columns are included in the output; disabled columns are dropped. Click any button to toggle inclusion. The output updates instantly — no submit button required.
Column Order Preservation
The extracted columns always appear in the same left-to-right order as in the original CSV. If you need a different column order in the output, use the Column Renamer or manually reorder after extraction.
Privacy Use Case
Dropping PII columns before sharing a CSV is one of the most common uses for this tool. Select only the non-sensitive columns (product ID, category, price) and the personal columns (name, email, phone) never appear in the output — the data stays in your browser and is never uploaded.
Practical Examples
Stripping PII Before Sharing Analytics Data
Remove personally identifying columns from a user analytics export.
- 1.Paste the full export with columns like user_id, name, email, country, page_views
- 2.Deselect 'name' and 'email' toggle buttons
- 3.Verify only user_id, country, page_views remain highlighted
- 4.Copy the stripped CSV to share safely
How It Works
- Parse CSV and render each header as a toggle button
- Selected columns included in output in original order
- Output updates live as you toggle columns on/off
- Header row always included with selected column names
Good Use Cases
- Removing PII columns before sharing data with third parties
- Slimming down wide CRM exports to relevant fields only
- Preparing a subset of columns for a specific API import format
- Reducing file size by dropping unused columns before processing
Frequently Asked Questions
Does column order matter?
Yes — columns appear in the output in the same order they appear in the original CSV.
Can I select all or none?
Click individual column buttons to toggle them on/off. You can deselect all and start fresh to build up your selection.
Is the header row included?
Yes. The selected column headers are always included as the first row of the output CSV.