PromptMate

Privacy-first AI toolkit: mask sensitive data before pasting, enhance prompts, and manage reusable prompt snippets.

PromptMate is a privacy-first productivity extension for anyone who uses AI chat tools like ChatGPT, Claude, Gemini, or any other AI interface. 🔒 PII Masker Automatically masks emails, phone numbers, and any custom terms you define before you paste text into an AI chat. Your sensitive data never leaves your browser — masking happens entirely on-device. ✨ Prompt Enhancer Right-click any AI chat input field and select "Enhance prompt with PromptMate" to instantly rewrite your draft into a clearer, more effective prompt using Google's Gemini API. You use your own API key — your text goes directly from your browser to Google, never through our servers. 📚 Prompt Library Save and manage reusable prompts. Insert them in one click from the popup — perfect for recurring tasks, templates, or workflows. ⚙️ Allowed Sites Control exactly which domains PII masking is active on. You decide where the extension runs. 🛡️ Privacy by design No accounts. No analytics. No telemetry. Everything is stored locally in your browser. Uninstalling the extension deletes all your data. How to get started: 1. Click the PromptMate icon to open the popup 2. Add your custom PII terms in Settings 3. Optionally add a free Gemini API key from aistudio.google.com to enable prompt enhancement 4. Start pasting — your data stays yours