Convert images to webP using Pillow

Question

I'm trying to convert .jpg images to webp format using PIL. I'm using the this code: ``` from PIL import Image import glob, os for infile in glob.glob("*.jpg"): file, ext = os.path.splitext(infile) im = Image.open(infile).convert("RGB") im.save(file + ".webp", "WEBP") ``` But I get the following error on running it: ``` Traceback (most recent call last): File "webp.py", line 7, in <module> im.save(file + ".webp", "WEBP") File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1444, in save save_handler = SAVE[format.upper()] # unknown format KeyError: 'WEBP' ``` Kindly help me fixing it. I have installed `libwebp-dev`. ``` >>> import PIL >>> dir(PIL) ['PILLOW_VERSION', 'VERSION', '__builtins__', '__doc__', '__file__', '__name__', '__package__', '__path__', '_plugins'] >>> PIL.PILLOW_VERSION '2.2.1' >>> PIL.VERSION '1.1.7' ```

Accepted Answer

Make sure to install `WEBP` dev library for your OS. For Debian/Ubuntu it's `libwebp-dev`. You may need reinstall Pillow as well. In the output of Pillow install log you should see:

```
--- WEBP support available
```

Convert images to webP using Pillow

Solution

Problem