# Filters¶

## How Filters Work¶

Thumbor handles filters in a pipeline. This means that they run sequentially in the order they are specified! Given an original image with size $$60x40$$ and the following transformations:

The resulting image will first check if it can fit into a $$100x100$$. Since it does, the filter pipeline will kick in and:

• add the watermark in the image;
• blur the whole image (including the watermark);
• Fill the outer parts of the image with red (so it will fit in $$100x100$$);
• Then it will try to upscale. This will have no effect, since at this point the image is already $$100x100$$.