PostEaseDesign a new vertical graphic, do not just crop
A screenshot or a cropped version of an image made for another platform rarely performs as well as a Pin designed for the format: tall, with room for a clear title overlay. Building a dedicated graphic from the source content, even a plain one, is worth the extra effort.
Write the description like a search result, not a caption
Since Pinterest behaves like a search engine, a Pin's description should be clear, specific, and keyword-relevant, written to match a real search query rather than as a casual caption of the kind you would write for a social feed elsewhere.
One source can become several Pins over time
A single blog post or long video can support several Pins, each with a different title and graphic emphasizing a different angle of the same source. Publish them over weeks rather than all at once. Spreading them out gives each one a fair chance to be judged on its own.