# External Links

External links let you reference related information — invoices in another system, supporting documents, or any web resource — directly from a transaction. Unlike [attachments](https://bkper.com/docs/guides/using-bkper/attachments.md) (which store the file in Bkper), external links point to a URL in an external system. You can add more than one link to the same transaction.

## Inserting links

There are two ways to add an external link.

### Via the link icon

Click the **link icon** on the transaction and paste the URL.

### Directly in the input field

Include the URL in the input field when recording the transaction. Bkper detects it automatically and stores it as an external link.

## Removing links

Open the transaction and click the **trash icon** next to the link you want to remove.

## Accessing links

Click the **link icon** on the transaction row to open the attached URL in a new tab.

## Combining with attachments

You can use both external links and [file attachments](https://bkper.com/docs/guides/using-bkper/attachments.md) on the same transaction. Attach the receipt as a file and link to the invoice in your billing system — giving you both a local copy and a reference to the source. Transactions recorded from a mobile device also include a **geo-reference link** automatically.