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Manage custom system prompts across ChatGPT, Claude, Gemini & Perplexity. No login. No ads. Works locally. Switch AI system prompts with one click. Built for people who context-switch all day. ChatGPT, Claude, and Gemini force you into one static system instruction. If you're jumping between code reviews, client emails, brainstorming sessions, and research — you're either retyping prompts or losing your carefully-written instructions. PromptDeck fixes this. CORE WORKFLOW: Save your prompts once. Color-code them. Pin your favorites. Hit Ctrl+Shift+P when you need to switch modes. Done. Works on ChatGPT, Claude, Gemini, and Perplexity. Same extension, same shortcuts, same workflow everywhere. FEATURES -Unlimited custom prompts -Save as many as you need. Title them. Write the full system instruction. Tag them with colors for instant visual filtering. -One-click injection: Select a preset from the widget. Prompt auto-fills the chat input. No copy-paste. No switching tabs. Just click and go. -Keyboard-first design Ctrl+Shift+P to open widget. Arrow keys to navigate. Enter to inject. Escape to close. Power users stay on the keyboard. -Color coding & search: Tag prompts with 6 colors. Filter by color instantly. Search by title or content. Find any prompt in milliseconds. -Pin favorites: Your most-used prompts stay at the top. No scrolling through 50 presets to find "Code Reviewer" for the 20th time today. -Version history: Edit a prompt? We keep the last 3 versions. Roll back anytime. No more "I had a better version of this yesterday" moments. -Import/Export:Backup your prompt library as JSON. Share it with teammates. Move between devices. Your prompts, your control. -Multi-language support: Available in English, German, Spanish, and French. UI translates completely. Choose your language on first install or change it anytime in settings. PRIVACY Everything runs locally in your browser. No account required. No server. No analytics. No tracking. Your prompts are stored in Chrome's local storage. They never touch our servers because we don't have servers. We don't see what you create. We don't know what AI tools you use. We don't collect usage data. BUILT FOR: -Developers switching between code review, debugging, documentation, and architecture modes. -Writers managing different tone presets for clients, personal projects, and technical content. -Researchers organizing prompts for literature review, data analysis, fact-checking, and synthesis. -Product managers juggling stakeholder communication, technical specs, user research, and roadmap planning. -Anyone using AI tools beyond casual chat. If you have more than 3 different "modes" you use regularly, this will save you time. TECHNICAL DETAILS Works on: chatgpt.com, chat.openai.com, claude.ai, gemini.google.com, perplexity.ai Keyboard shortcuts: Ctrl+Shift+P (Windows/Linux), Cmd+Shift+P (Mac) Data storage: Chrome local storage API (offline, private, persistent) Languages: English, Deutsch, Español, Français File format: Standard JSON for import/export No backend. No API calls. No external dependencies. HOW IT WORKS Install extension. Choose your language. Create your first preset. Open ChatGPT, Claude, or Gemini. Hit Ctrl+Shift+P. Select your preset. Prompt appears in the chat input. That's it. FREE STARTER LIBRARY 70 pre-made prompts across 7 categories: Code & Development, Writing & Editing, Research & Analysis, Critical Thinking, Learning & Teaching, Productivity & Workflow, Communication. Visit promptdeck-library.vercel.app to browse and download. ALTERNATIVES & COMPARISONS ChatGPT custom GPTs: Requires ChatGPT Plus. Doesn't work on Claude or Gemini. Can't export. Claude Projects: Locked to Claude. No cross-platform support. Heavy for simple prompt switching. Manual copy-paste: Slow. Error-prone. Requires keeping prompts in a separate doc. PromptDeck: One tool, all platforms, keyboard-first, fully local. COMMON QUESTIONS Does this work with ChatGPT Plus / Claude Pro / Gemini Advanced? Yes. Works with free and paid tiers of all platforms. Can I sync across devices? Export your prompts as JSON. Import on another device. Manual but works. Does this inject prompts automatically? No. You select when to inject. Full control, no automation. Will this work if the AI platforms change their UI? We use fallback selectors. If ChatGPT updates their DOM, we try multiple targeting methods. Updates pushed as needed. SUPPORT & FEEDBACK Found a bug? Have a feature request? Email sakshambhatia1414@gmail.com Reviews help us improve. If PromptDeck saves you time, leave feedback on the Chrome Web Store. Version 1.1.0 - March 2026 Multi-language support (EN/DE/ES/FR) Keyboard navigation improvements Performance optimizations