# File preview for de-identified files

For a dataset that generates output files of the same type as the original file, the file preview displays the source and output versions of the file, and highlights the detected entity values.

From a file preview, you can change the entity type handling. For some file types, you can also add manual redactions.

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Select the view</strong><br><br>Display either the output or original version of the file.</td><td><a href="/pages/pvPoDtecZeZCKpfYz1Vh">/pages/pvPoDtecZeZCKpfYz1Vh</a></td></tr><tr><td><strong>Configure entity type handling</strong><br><br>Select the entity type handling option.</td><td><a href="/pages/bt3sMjOfw7Moi12JkriC">/pages/bt3sMjOfw7Moi12JkriC</a></td></tr><tr><td><strong>Add manual redactions</strong><br><br>Select text to redact and assign an entity type to.</td><td><a href="/pages/nWAWTMgPm0OUuOW3Yd6A">/pages/nWAWTMgPm0OUuOW3Yd6A</a></td></tr><tr><td><strong>Ignore entity instances in PDF files</strong><br><br>Ignore specific detected entity values in a PDF file.</td><td><a href="/pages/hj66KXHdNfpZjVVSVlDF">/pages/hj66KXHdNfpZjVVSVlDF</a></td></tr><tr><td><strong>Configure CSV columns</strong><br><br>Display column format and configuration options from a CSV file preview.</td><td><a href="/pages/p30RTVwZb87qrx4rMHyT">/pages/p30RTVwZb87qrx4rMHyT</a></td></tr></tbody></table>


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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.