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CSV Filter & Transform
Drop a CSV file and build a visual filter pipeline. Combine filters with AND/OR, pick columns to keep, sort results, and download the transformed CSV. Your data never leaves your browser.
Drop a CSV or TSV file here, or click to select.
CSV, TSV · Max 2 GB
How to use CSV Filter & Transform
- 1
Drop your CSV
Drag a .csv or .tsv file onto the dropzone.
- 2
Build the filter pipeline
Add filter rows: column + operator (=, !=, <, >, contains, regex) + value. Combine multiple rows with AND or OR.
- 3
Pick columns and sort
Use the column picker to drop columns you don't need. Pick a sort column and direction.
- 4
Download the result
The DataTable preview updates live as you change filters. Click Download to save the filtered CSV.
Frequently asked questions
- Does this tool upload my CSV?
- No. Every parse, transform, and download runs entirely in your browser using JavaScript and Web Workers. The file never leaves your device — there is no upload endpoint and no server-side processing.
- How do regex filters compare to contains?
- Contains does a case-sensitive substring search. Regex evaluates a JavaScript RegExp, so you get anchors, character classes, and lookarounds — at the cost of a less forgiving syntax.
- Are < and > comparisons numeric or string?
- Numeric when both sides parse as numbers, string-lexicographic otherwise. Mix numeric and string values in the same column and you may see surprising orderings.