> For the complete documentation index, see [llms.txt](https://docs.aiceberg.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aiceberg.ai/inventory/what-is-the-inventory/what-are-collections/whats-the-csv-format-for-collections.md).

# What's the CSV format for Collections?

The best format for a CSV uploaded to Collections is a single column with no column header (column A only), encoded as UTF-8.

![](/files/68851747bb357d335567128e86e8448945a2cd17)

Only UTF-8 format is supported. Any other format will cause the upload to fail, including the Windows default in some older Excel versions.

Additional considerations

* All columns aside from column A will be ignored.
* Single empty rows will be ignored, but multiple consecutive empty rows will prevent any further content from uploading.
* Large CSVs may take some time to import.

{% stepper %}
{% step %}

### Save from Excel as UTF-8

* Open your file in Excel.
* Choose "Save As".
* Select UTF-8 as the encoding when saving.

If you'd like a sample CSV, reach out to <support@aiceberg.ai> and we're happy to send you one.
{% endstep %}
{% endstepper %}


---

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