How to adjust the quality of a resized image in Python Imaging Library?

Question

I am working on PIL and need to know if the image quality can be adjusted while resizing or thumbnailing an image. From what I have known is the default quality is set to 85. Can this parameter be tweaked during resizing? I am currently using the following code: ``` image = Image.open(filename) image.thumbnail((x, y), img.ANTIALIAS) ``` The `ANTIALIAS` parameter presumably gives the best quality. I need to know if we can get more granularity on the quality option.

Accepted Answer

Use PIL's `resize` method manually:

```
image = image.resize((x, y), Image.ANTIALIAS)  # LANCZOS as of Pillow 2.7
```

Followed by the save method

```
quality_val = 90
image.save(filename, 'JPEG', quality=quality_val)
```

Take a look at the source for `models.py` from Photologue to see how they do it.

How to adjust the quality of a resized image in Python Imaging Library?

Solution

Problem