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

# Compress PDF Document

> Reduce the file size of a PDF inside a Power Automate flow with the Nitro PDF Services connector.

Reduces the file size of a PDF while preserving its content and formatting. Compress always targets
the smallest output; if you want to trade size against quality, use **Optimize PDF Document** and
its profile instead.

## Inputs

| Field | Required | Description |
| - | - | - |
| **PDF File** | Yes | The PDF's bytes. Usually the **File Content** output of a SharePoint, OneDrive or Outlook step, or of a previous Nitro action. |
| **PDF File (file name)** | No | A name for the input. Not needed for PDFs. |
| **Accept (Output format)** | No | `application/octet-stream` (default) returns the file; `application/json` returns a download URL. Under **Advanced parameters**. |

## Outputs

<Tabs>
  <Tab title="File (default)">
    Three tokens: **File Name** (`result.pdf`), **File Content Type** (`application/pdf`) and
    **File Content** (the bytes). Drop **File Content** into a **Create file** step or the next
    Nitro action.
  </Tab>

  <Tab title="JSON">
    With **Accept** set to `application/json`:

    ```json theme={null}
    {
      "result": {
        "file": {
          "URL": "https://…",
          "contentType": "application/pdf",
          "metadata": { "fileSizeBytes": 49080, "pageCount": 12 }
        }
      }
    }
    ```

    The picker exposes `body/result/file/URL`, `…/fileSizeBytes` and `…/pageCount`. The URL expires
    after about 15 minutes.
  </Tab>
</Tabs>

## Example flow

Compress every PDF added to a SharePoint library and write the result to an `Archive` folder with
the original name. This is the flow built step by step in
[Get started](/docs/integrations/power-automate/getting-started).

<Frame>
  <img src="https://mintcdn.com/go-nitro/WZBxxsnP4QUUwrBq/images/integrations/power-automate/pa-flow-overview.png?fit=max&auto=format&n=WZBxxsnP4QUUwrBq&q=85&s=38a0792cc806ec0aabe46d793eb8995d" alt="Flow: When a file is created, Get file content, Compress PDF Document, Create file" width="320" data-path="images/integrations/power-automate/pa-flow-overview.png" />
</Frame>

<Steps>
  <Step title="When a file is created (properties only)">
    SharePoint trigger, scoped to the document library you want to watch.
  </Step>

  <Step title="Condition">
    Only continue when the file is a PDF:

    ```
    endsWith(triggerOutputs()?['body/{FilenameWithExtension}'], '.pdf')
    ```
  </Step>

  <Step title="Get file content">
    SharePoint. **File Identifier** → the trigger's **Identifier**.
  </Step>

  <Step title="Compress PDF Document">
    Nitro. **PDF File** → the previous step's **File Content**.
  </Step>

  <Step title="Create file">
    SharePoint. **Folder Path** → `/Shared Documents/Archive`.
    **File Name** → the trigger's **File name with extension**.
    **File Content** → the Nitro step's **File Content**.
  </Step>
</Steps>

<Warning>
  Writing the output back to the folder that fires the trigger will loop. Use a different folder or
  library, or add a condition on the trigger's **Folder path**.
</Warning>

## Related

* [Optimize PDF Document](/docs/integrations/power-automate/actions) — choose a profile instead of always-smallest
* [Working with files](/docs/integrations/power-automate/working-with-files)
* [Compress API reference](/docs/api-reference/platform/transformations/compress)