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49 lines
1.6 KiB
Plaintext
49 lines
1.6 KiB
Plaintext
---
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title: Supported File Formats
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description: File formats supported for data import in Twenty.
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---
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## Supported Formats
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Twenty supports three file formats for import:
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| Format | Extension | Notes |
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| ------------------ | --------- | ---------------------------- |
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| **CSV** | .csv | Recommended, most compatible |
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| **Excel** | .xlsx | Modern Excel format |
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| **Excel (Legacy)** | .xls | Older Excel format |
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## File Requirements
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| Requirement | Value |
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| ---------------- | ------------------------------------- |
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| **Encoding** | UTF-8 recommended |
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| **Record limit** | 10,000 records per file |
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| **Structure** | First row must contain column headers |
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| **Content** | One object type per file |
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## CSV Best Practices
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* **Delimiter**: Use comma (`,`) or semicolon (`;`)
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* **Text qualifier**: Use double quotes (`"`) for text containing commas
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* **Line endings**: Windows (CRLF) or Unix (LF) both supported
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* **Empty values**: Leave cells empty, don't use "NULL" or "N/A"
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## Excel Best Practices
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When exporting from Excel:
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* Remove formulas (export values only)
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* Delete empty rows at the end
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* Ensure no merged cells
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* Use the first sheet only
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## Large Datasets
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For datasets larger than 10,000 records:
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* Split into multiple files
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* Or use the [API import](/l/ko/user-guide/data-migration/how-tos/import-data-via-api) for unlimited records
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<Note>For very large migrations (100,000+ records), the API is significantly faster and more reliable than CSV imports.</Note>
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