# Polygon <-> Mask Conversion

Sometimes, you might want to switch between an annotation from polygon to mask or vice versa. Polygons tend to be easier to edit so if you have an annotation that is in mask-form and you want to edit it, you can convert it by pressing this button:

<figure><img src="https://wiki.cloudfactory.com/media/pages/docs/userdocs/annotation-environment/manual-and-semi-automated-tools/polygon-mask-conversion/231f71eb0d-1684131916/screen-shot-2021-06-16-at-5.14.58-pm.webp" alt=""><figcaption><p>When you have selected one or more masks, click the "Convert to Polygon" to change their types</p></figcaption></figure>

The same can be done in reverse by selecting polygons and then clicking "Convert to mask"
