What Duplicate Data Cleaner Does
Duplicate Data Cleaner removes repeated entries in bulk for both line-based text and JSON arrays. All processing runs locally in your browser, helping you clean data quickly without sending content to a server.
Key Features
- Deduplicates text line by line while keeping first-appearance order.
- Deduplicates JSON arrays by full object or by a specified key field.
- Supports case sensitivity, trim spaces, and ignore-empty-line options.
- Supports one-click copy and download of cleaned output.
Steps
- Choose Text Deduplication or JSON Deduplication mode.
- Paste your source data into the input area.
- Configure options and set a JSON key field if needed.
- Click Start Deduplication to get output and statistics.
- Copy or download the result for downstream use.
Use Cases
- Remove duplicate rows from user or contact lists.
- Clean repeated lines in logs before analysis.
- Deduplicate JSON responses during API integration.
- Prepare cleaner data before import, comparison, or reporting.
FAQ
Will deduplication change the order?
No. The result keeps the first occurrence order.
What if no JSON key field is provided?
The tool deduplicates by full object content.
Is my data uploaded?
No. Everything is processed locally in your browser.