# Python Imghdr Module

The `imghdr` module determines the type of image contained in a file or byte stream.

**Note: The `imghdr` module is deprecated as of Python 3.11 and was removed in Python 3.13. It is recommended to use external libraries like `filetype`, `puremagic`, or `python-magic` for file type detection.**

## Importing the Module

```python
import imghdr
```

## Determining Image Type

### `imghdr.what()`

The `imghdr.what()` function tests the image data contained in the file named by `filename`, and returns a string describing the image type. If optional `h` is provided, the `filename` is ignored and `h` is assumed to contain the byte stream to test.

```python
import imghdr

filename = 'image.png'
image_type = imghdr.what(filename)

if image_type:
    print(f"Image type: {image_type}")
else:
    print("Could not determine image type.")
```

### Using Byte Stream

You can also pass the image data directly as bytes.

```python
import imghdr

with open('image.jpeg', 'rb') as f:
    data = f.read()
    print(imghdr.what(None, data))
```

## Supported Types

The following image types are recognized:

*   `'rgb'`, `'gif'`, `'pbm'`, `'pgm'`, `'ppm'`, `'tiff'`, `'rast'`, `'xbm'`, `'jpeg'`, `'bmp'`, `'png'`, `'webp'`, `'exr'`

[[programming/python/python]]