Data Deduplicator
DATARemove duplicate rows or entries from CSV and text data.
ℹ️ About Data Deduplicator
Data Deduplicator is a free online data tool from Tools Coaster. Remove duplicate rows or entries from CSV and text data. It is handy for duplicate, remove, data tasks. It runs entirely in your browser — no sign-up, no installs, and nothing you enter ever leaves your device.
📖 How to Use Data Deduplicator
1
Paste your data
Enter your JSON, CSV, XML, or other structured data.
2
Run Data Deduplicator
The tool parses and transforms your data instantly.
3
Check the output
Review the converted or validated result.
4
Copy or export
Copy the output for your spreadsheet, database, or app.
💡 Examples
Data conversion
INPUT
name,age
Ada,36→
OUTPUT
[{ "name": "Ada", "age": "36" }]🚀 Pro Tips
✓Everything runs locally in your browser — your input is never uploaded to a server, so it is safe for private or sensitive data.
✓Keep headers consistent — the first row usually defines your field names.
✓Use it to prototype data shapes before writing an import script.
✓Handles nested JSON and arrays, not just flat tables.
✓Validate structure before importing data into a database or spreadsheet.