Field notes
Playbooks, teardowns and the occasional argument — everything we have learned helping creators grow across every major platform.
Every platform publishes a larger copy of a post's picture than the one the feed renders. Here is where each one keeps it, and where the trail goes cold.
Pinterest serves every Pin at four fixed widths and keeps the original under a path the interface never links to. Here is how to get the file as uploaded.
WebP vs JPEG is the wrong question on its own. Here is which format wins for photographs, screenshots, logos and social uploads, and why.
Every platform recompresses your upload. Compressing first, correctly, is how you control the result instead of letting their algorithm decide.