Prepare Data Before Import

Inspect a CSV before importing into a database, spreadsheet, or CRM to verify structure.

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Import Prep tips

📥

Before importing customer lists into Salesforce, HubSpot, or your CRM, verify column headers and row counts match the import schema.

💡

Sort by a key column (e.g., email) to spot duplicates — duplicate rows often cause import errors in systems with unique constraints.

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Look for empty cells in required columns — they'll trigger import errors. The viewer highlights the structure clearly.

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If your CSV has BOM or unusual encoding, paste a sample into the text area; some import systems are fussier than this viewer.

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Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

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The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

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Get your result instantly. Nothing is stored after you leave the page — complete privacy.

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