CSV Deduplicator
Remove duplicate rows from CSV files. Deduplicate by exact match or selected columns with case-insensitive and whitespace trimming options.
CSV Deduplicator
Remove duplicate rows from CSV files. Deduplicate by exact match or selected columns with case-insensitive and whitespace trimming options.
CSV Input
Drag & drop a .csv or .tsv file here, or click to browse
Related Tools
Frequently Asked Questions
What is the CSV Deduplicator?
The CSV Deduplicator is a free online tool that remove duplicate rows from csv files. deduplicate by exact match or selected columns with case-insensitive and whitespace trimming options.. It runs entirely in your browser with no installation or sign-up needed.
What modes?
Exact row match (all columns) or selected-columns mode. Rows matching on all selected columns are duplicates.
Case-insensitive?
Yes — toggle to treat "Alice" and "alice" as same value. Whitespace trimming also available.
Export duplicates only?
Yes. Download the cleaned CSV or a separate file with only the removed duplicate rows for review.
Is the CSV Deduplicator free to use?
Yes, the CSV Deduplicator is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.
Is my data safe with this tool?
Absolutely. The CSV Deduplicator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the CSV Deduplicator work on mobile devices?
Yes, the CSV Deduplicator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the CSV Deduplicator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the CSV Deduplicator?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The CSV Deduplicator works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
Related Tools
Free Secure Password Generator
Generate secure, random passwords with customizable options. Free, fast, and works entirely in your browser with no sign-up required.
Free UUID/GUID Generator
Generate universally unique identifiers (UUIDs/GUIDs). Free, fast, and works entirely in your browser with no sign-up required.
Free QR Code Generator Online
Generate QR codes for URLs, text, WiFi credentials, and more. Free, fast, and works entirely in your browser with no sign-up required.
Free JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting and error detection. Free, fast, and works entirely in your browser with no sign-up required.
About CSV Deduplicator
CSV Deduplicator is a free, browser-based tool in our Utility Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.