PromptEditor

What it does

Writing a good prompt means juggling placeholders, formatting, variables, and rewrites — all in a tiny chat input box. PromptEditor gives you a proper side panel editor right in your browser. No tab-switching, no copy-pasting. Write, format, fill, share and send — all in one place.

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• PI
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  I was working on a project that involved indexing GitHub repos that used really long prompts. Iterating over each section and figuring out which parts of the prompt led to which parts of the output was a quite painful. As a frontend dev, I kept thinking it would be nice if I could just 'inspect element' on particular sections of the prompt. So I built this prompt debugger with visual mapping that shows exactly which parts generate which outputs. Now that context windows are getting huge, working with massive prompts should not be as difficult. Planning to open source this soon, but I'd love…

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  PromptUp.netFeb 2026 · promptup.net · ▲2

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