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The single most useful message you can send is a correction. If a platform has changed a size, let us know and we will verify and update it.

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Good things to send

A size that has changed, with a link to the platform's own guidance.
A platform or asset we do not cover yet.
A bug in one of the tools, with your browser and what you tried.
A directory or resource where PixelSpec would be a good fit.

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