> For the complete documentation index, see [llms.txt](https://docs.papers.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.papers.ai/notebooks-and-data/data-files.md).

# Data files

CSV, TSV, and JSONL files open in a dedicated table viewer instead of a text editor.

## View and edit

{% stepper %}
{% step %}

### Open the file

Open a supported data file (`.csv`, `.tsv`, `.jsonl`) from the file tree.
{% endstep %}

{% step %}

### Browse and filter

Use **Table view** to browse rows and columns, sort by clicking a column header, and filter rows with the filter input.
{% endstep %}

{% step %}

### Edit

Edit a cell directly by clicking into it, or switch to **Code view** to see or edit the raw file content instead.
{% endstep %}
{% endstepper %}

{% hint style="success" %}
Attach a data file to the AI and ask it a question about the contents. See [Using AI](/using-ai/using-ai.md) and the [Quickstart](/getting-started/quickstart.md) for a worked example.
{% endhint %}

## Things to know

* **Parquet** (`.parquet`) files are recognized but not yet viewable. Open in **Code view**, or convert to CSV or JSONL first.
* Pagination is fixed at 100 rows per page.
* Files up to 50 MB parse without warnings; the hard limit is 200 MB.

## Troubleshooting

<details>

<summary>The viewer won't open</summary>

Confirm the extension is `.csv`, `.tsv`, or `.jsonl`.

</details>

<details>

<summary>Rows fail to parse</summary>

Switch to **Code view** and check for malformed delimiters or broken JSON lines.

</details>

<details>

<summary>Data looks stale</summary>

Reopen the file tab.

</details>

## Next steps

* [Notebooks](/notebooks-and-data/notebooks.md)
* [Using AI](/using-ai/using-ai.md)