Blackout poetry is made by colouring over parts of an existing text, so that only selected words remain visible, creating a poem.
To use this tool, you can select a text from the samples, or paste your own text source into the custom text field. Your chosen text will appear in the large box to the right.
With your mouse or touchscreen, select the words from the text you want to keep, and, when you are ready, press the black out button.
If you want to save the result as an image, maybe to post to your social network of choice, scroll down and hit Render as image. You can then save the image directly to your device.