CSV Minifier
Minify CSV by stripping unnecessary whitespace around delimiters and unneeded quotes, while preserving whitespace inside quoted fields. Free online CSV minifier.
Raw CSV Input
Minified Output
Minified CSV will appear here...
How to Use the CSV Minifier
Paste your CSV into the input box. The minifier parses it with full quote-awareness, then strips every bit of unnecessary whitespace around delimiters and unquoted field values — while leaving whitespace that sits meaningfully INSIDE a quoted field completely untouched. It also drops quote marks that aren't actually required (a field only needs quoting if it contains a comma, a quote character, or a newline), producing the smallest valid CSV that still parses identically.
Example
Input like Name , Age
"Alice" , 30 minifies down to Name,Age
Alice,30 — the padding around commas is removed and the unnecessary quotes around Alice are dropped, since that field doesn't contain a comma, quote, or newline.
Common Use Cases
- Shrinking CSV file size before uploading it to a system with strict size limits.
- Cleaning up CSV exported from a spreadsheet tool that adds inconsistent padding.
- Producing compact CSV output for a data pipeline where every byte counts.
FAQs
- How is this different from the CSV Formatter? The CSV Formatter does the opposite job — it ALIGNS CSV into readable, padded columns for easier reading by a human. This CSV Minifier strips all non-essential whitespace instead, aiming for the smallest possible file size rather than readability.
- Will this change what my CSV actually contains? No — the output parses to exactly the same rows and values as the input. Only insignificant whitespace (padding around delimiters and outside quoted fields) and unnecessary quote marks are removed; any whitespace that was genuinely inside a quoted field is preserved exactly.
- Does it handle fields containing commas or quotes correctly? Yes — fields that contain a comma, a quote character, or a newline are automatically kept quoted (with embedded quotes doubled per the CSV standard) so the minified output still parses correctly.