Prompt Cleaner
Strip stray blank lines, zero-width characters, Markdown marks and mixed punctuation from copied prompts.
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Cleanup rules
Input
Output
Results appear here as you type.
Strip stray blank lines, zero-width characters, Markdown marks and mixed punctuation from copied prompts.
Prompts pasted out of a chat window, a web page or an AI reply carry things you cannot see: stray blank lines, zero-width characters, Markdown marks and mixed punctuation. They never show up on screen, but the model reads every one of them. This tool splits cleanup into nine independent rules so you enable exactly what you need, with a live character delta at the bottom.
How to use it
- 1Paste the prompt into the left pane.
- 2Tick the rules you need. When unsure, start with trim / collapse spaces / collapse blank lines — they never touch the wording.
- 3The right pane updates live. Copy when it looks right.
FAQ
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