Apparently CodePen 2.0 sends data to their servers as you type

By maxim-fin · 2026-09-07 · 44 points · 17 comments

They send all typed into editor input to codepen.dev almost immediately (you would see in 1-2 sec after you typed your secret that it appears in respective Network/Response tab) even before one saved it. I tested this with a unique marker: after typing it into index.html, C…

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