100% Private • Local Storage • No Tracking

Your Personal AI Prompt Library

Capture, organize, and reuse prompts from ChatGPT, Claude, and more. Never lose a great prompt again.

Everything you need to master AI prompts

PromptCase automatically captures and organizes your prompts so you can focus on getting the best results from AI.

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Automatic Capture

Prompts are automatically saved as you use AI chat services. No manual copying or intervention required.

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Multi-Service Support

Works seamlessly with ChatGPT, Claude, Gemini, Copilot, Perplexity, and more AI platforms.

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Smart Search

Find any prompt instantly with powerful search across prompt text and custom tags.

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Organize with Tags

Add custom tags to categorize prompts by topic, project, or any way that works for you.

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One-Click Copy

Reuse your best prompts instantly with a single click. Perfect for repetitive tasks.

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Export & Import

Back up your prompt library as JSON, share with teammates, or migrate between devices.

Get started in seconds

PromptCase works automatically in the background, requiring zero setup or configuration.

1

Install Extension

Add PromptCase to Chrome with one click. No account or registration required.

2

Use AI Normally

Visit ChatGPT, Claude, or any supported AI service and use it as you normally would.

3

Prompts Auto-Save

Your prompts are automatically captured and stored locally in your browser.

4

Manage & Reuse

Click the extension icon to search, organize, and copy your saved prompts.

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Your Privacy is Our Priority

PromptCase is designed from the ground up with privacy in mind. All your prompts are stored locally on your device using Chrome's secure storage API. Nothing is ever sent to external servers, and no analytics or tracking code exists in the extension.

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100% Local Storage
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No Cloud Sync
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Zero Tracking
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Open Source

Works with all major AI services

PromptCase supports the most popular AI chat platforms, with more being added regularly.

Ready to build your prompt library?

Join thousands of AI enthusiasts and prompt engineers using PromptCase

Install PromptCase