> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Adding and deleting documents

> Add and delete documents in the ABBYY Vantage web app: upload by drag-and-drop, view file details, applied skills, processing status, and remove documents.

To upload documents, click **Upload documents** or drag files onto the browser window.

Note that each file must contain only one document. If you have a multi-page document split across several image files, combine them into a single file before uploading. For supported file formats, see [this article](https://docs.abbyy.com/vantage/documentation/tenant-admin/technical-specs/formats).

ABBYY Vantage cannot process secured PDF files, such as password-protected PDFs or PDFs with content-copying restrictions. To remove these restrictions before uploading, use a third-party PDF editor.

## Document Display

Uploaded documents appear in a list, sorted by upload date. The following information is shown for each document:

* **File name**
* **Upload date and time**
* **Applied skill** — the skill selected from the Skill Catalog, if one was found
* **Extracted fields** — the number of fields extracted from this document out of the total available for this document type

## Grouping and Reviewing Documents

Click **Group documents** to sort documents by their applied skill. This is useful when you need to bring together documents of the same type for review. Each document displays its extracted key fields, as defined by the settings of the applied skill. Documents whose type could not be detected are grouped under **Unknown Documents**.

To open a document in the Manual Review window, click the review link next to it. To review multiple documents at once, select them and click **Review Result** on the toolbar or **Review Document** in the Actions pane. This opens all selected documents in the same Manual Review window. For more information, see [Manual Review client](https://docs.abbyy.com/vantage/documentation/runtime/manual-review).

If you find during review that a skill needs adjustment, you can duplicate it and modify the copy to suit your needs.

## Handling Upload Failures

Documents that fail to upload — for example, due to an unsupported file format or a lost connection — are highlighted in red. To retry, click **Reload** next to the document, or click the **More options** button beside the upload date and select **Reload** from the menu.

## Deleting Documents

To delete a document or group, use one of the following methods:

* Click the **More options** button next to the document or group and select **Delete** or **Delete Documents** from the menu.
* Select one or more documents or groups using the checkboxes, then click **Delete** on the toolbar.