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What this CSV Filter tool offers
Filter CSV rows quickly by selected column and value match mode.
- Flexible match modes: Use exact, contains, starts with, or ends with matching.
- Header-aware columns: Column selector can show index and header labels.
- Filtered count: See matched rows against total rows after filtering.
- Preview table: Inspect the first 25 filtered rows before export.
- Export options: Download or copy filtered CSV output.
- Private: No uploads. Data stays in your browser.
Why filter CSV?
Filtering helps isolate only relevant rows for analysis, reporting, or downstream processing.
- Faster review: Focus on matching rows instead of scanning the full file.
- Cleaner exports: Share or import only the subset you need.
CSV parsing and row filtering run entirely in your browser with no server upload; heavy output updates are deferred so the interface stays responsive on larger datasets.
When to use each match mode
- Exact: Use when the value must match exactly.
- Contains: Use when value can appear anywhere in the text.
- Starts/Ends with: Use prefix or suffix matching patterns.
Frequently asked questions
What match modes are available?
Exact, contains (case-insensitive), contains (case-sensitive), starts with, and ends with.
What if value is empty?
If the filter value is empty, all rows are kept.
How does column selection work?
When a header is present, dropdown labels use index and header name.
Which delimiters are supported?
Auto, comma, semicolon, tab, and pipe are supported.
Is my data uploaded?
No. Processing runs fully in your browser.