System Prompt Compressor
Trim safe filler and normalize prompts locally in your browser
About
Remove common filler, normalize whitespace and bullets, deduplicate repeated sentences, apply safe abbreviations, and compare approximate character-based token counts. No LLM or network request is used.
About this tool
Compress system prompts with conservative, deterministic rules in your browser. System Prompt Compressor runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- System Prompt Compressor is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use System Prompt Compressor?
Open System Prompt Compressor, enter or paste your input, and copy the result. The page works without an account.
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