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

# Format and compression

# Format & Compression

Control document formats and quality settings with our format and compression transformations. These transformations allow you to convert between document types and optimize file sizes while maintaining appropriate quality levels.

## Format Conversion

Convert documents between supported formats using the format parameter.

### Format Parameter

* **Parameter**: `f_{format}`
* **Values**: `pdf`, `docx`, `xlsx`, `pptx`
* **Example**: `tr-f_pdf`

```
https://cdn.apexxcloud.com/f/abc123/tr-f_pdf/documents/contract.docx
```

### Format-Specific Features

| Format | Features                                                                                      | Best For                                                    |
| ------ | --------------------------------------------------------------------------------------------- | ----------------------------------------------------------- |
| PDF    | - Supports all transformations<br />- Best compression options<br />- Universal compatibility | - Document sharing<br />- Archival<br />- Print-ready files |
| DOCX   | - Maintains editability<br />- Basic compression                                              | - Editable documents<br />- Word processing                 |
| XLSX   | - Preserves formulas<br />- Basic compression                                                 | - Spreadsheet data<br />- Calculations                      |
| PPTX   | - Maintains animations<br />- Basic compression                                               | - Presentations<br />- Slideshows                           |

## Quality & Compression

Optimize document file size while maintaining appropriate quality levels.

### Quality Settings

* **Parameter**: `q_{value}`
* **Values**:
  * `auto:high`: Minimal compression, best quality
  * `auto:standard`: Balanced compression (recommended)
  * `auto:low`: Maximum compression
* **Example**: `tr-q_auto:standard`

```
https://cdn.apexxcloud.com/f/abc123/tr-q_auto:standard/documents/report.pdf
```

### Compression Mode

* **Parameter**: `c_{mode}`
* **Values**:
  * `high`: Maximum compression
  * `medium`: Balanced compression
  * `low`: Minimal compression
* **Example**: `tr-c_high`

```
https://cdn.apexxcloud.com/f/abc123/tr-c_high/documents/presentation.pptx
```

**Note**: Use either quality (`q_`) or compression (`c_`) parameters, but not both together.

## Page Selection

Control which pages are included in the output document.

### Page Range

* **Parameter**: `p_{range}`
* **Values**:
  * Single page: `p_1`
  * Page range: `p_1-3`
  * Multiple ranges: `p_1-3,5-7`
* **Example**: `tr-p_1-3`

```
https://cdn.apexxcloud.com/f/abc123/tr-f_pdf,p_1-3/documents/report.docx
```