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Duplicate SKU Checker
Find repeated SKU values and highlight affected lines.
Product Catalogue workspacePreview and prepare locally; nothing is uploaded to the store.
Privacy-focused processingBrowser processing is used wherever practical.
25-minute cleanup policyServer files, when required, are removed after completion—not during active work.
Text, pasted data or supported local filesMaximum size and exact support are shown inside the tool.
About This Tool
Locate repeated SKUs in pasted lines, with optional case-insensitive matching.
How to Use
- Paste one SKU per line.
- Choose whether case matters.
- Review highlighted duplicates and line numbers.
Tool Features
- Duplicate line highlighting
- Case-sensitive option
- Clean summary report
- Copy/download
Common Use Cases
Complete repetitive formatting or calculation tasks.
Prepare clean output for websites and documents.
Inspect and verify your result before downloading.
Supported Input and Output
Text, pasted data or supported local files
- Check the tool workspace for its exact file-size limit.
- Browser format support can vary by device and browser version.
- Always review the generated result before important use.
Frequently Asked Questions
Does it check my live store?
No. It checks only the SKU list you paste into this page.
Security and Privacy Information
Supported processing runs inside your browser whenever practical.
When server processing is required, cleanup starts only after the work completes.
Avoid uploading confidential data unless you understand the displayed processing notice.