Zotero Duplicates Merger

Detect and merge duplicate entries in Zotero bibliographies with intelligent field matching and conflict resolution.

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About This Tool

The Zotero Duplicates Merger tool helps researchers clean their bibliographic databases by identifying and merging duplicate entries from Zotero JSON exports. Upload your Zotero library export, configure merge preferences, and get a cleaned bibliography with all duplicates intelligently merged while preserving important metadata. The tool supports multiple matching strategies, field priority settings, and detailed conflict resolution options.

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How to Use

Export your Zotero library as JSON from Zotero desktop application
Upload the JSON file using the upload area
Configure duplicate detection settings (matching fields, threshold)
Set merge preferences for handling conflicting field values
Click 'Merge Duplicates' to process your bibliography
Download the cleaned JSON file or view the results

Frequently Asked Questions

Find Quick Answers

What file format does the tool accept?

The tool accepts JSON files exported from Zotero desktop application (File → Export Library → JSON format).

How does the tool detect duplicates?

Duplicates are detected by comparing multiple fields like DOI, ISBN, title, authors, and publication year. You can adjust the matching threshold and select which fields to prioritize.

What happens when fields conflict between duplicates?

You can configure merge preferences to prioritize certain sources, keep the longest value, or combine values. The tool shows all conflicts for manual review before finalizing.

Is my data secure?

All processing happens securely on our servers. Files are automatically deleted after processing, and no data is stored permanently.

Can I process large Zotero libraries?

Yes, the tool can handle libraries with thousands of entries. For very large files, processing may take a few moments.

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