According to AlphaMoat, as of 2026-09, the Chrome extension PromptBox has 66 users (-8.3% MoM) — ranked #4,930 of 9,324 AI browser extensions, and #1,207 of 2,418 in General AI.
Store, manage, and reuse AI prompts with automatic Chrome sync. Features dynamic variables and side panel access. PromptBox: The Ultimate AI Prompt & Template Manager
Stop re-typing the same prompts. PromptBox is a lightweight, privacy-first Chrome Extension that lets you store, organize, and execute your AI prompts and text templates instantly from a convenient side panel.
Whether you are a developer, content creator, or customer support pro, PromptBox keeps your most powerful text snippets just one click away.
✨ KEY FEATURES
🚀 Quick-Access Side Panel: No more clicking through popups. PromptBox stays open in your Chrome Side Panel while you work in ChatGPT, Claude, or any web app.
🔄 Smart Variables: Use {{shortText}} for quick inputs (names, topics) and [[longText]] for detailed context. PromptBox will ask you to fill them in and automatically replace them before copying.
📝 Context Snippets Library: Build a reusable library of context snippets (code examples, documentation, guidelines) and attach them to any prompt with one click. Perfect for maintaining consistent context across multiple prompts.
🌐 Dynamic URL Capture: Use the {{URL}} variable to automatically pull the link of your active tab into your prompt—perfect for "Summarize this page" workflows.
☁️ Secure Chrome Sync: Your library automatically syncs across all your devices where you're signed into Chrome. Start a prompt at work, finish it at home.
📂 Prompt Groups: Organize your prompts into groups and filter them instantly with the tab strip at the top. Each prompt can belong to multiple groups. Assign groups when creating or editing a prompt, or directly from the prompt card menu. Existing prompts remain fully accessible in the "All" view.
🔐 Privacy-First: 100% client-side. Your prompts stay on your machine or in your secure Google Sync storage. No external servers, no tracking, no data collection.
📋 One-Click Copy: Once filled, your prompt is instantly copied to your clipboard, ready to paste anywhere.
🎯 PERFECT FOR
Prompt Engineers: Save complex personas and system instructions for ChatGPT, Claude, or Gemini.
Developers: Store reusable code snippets, git commands, and PR templates.
Content Creators: Manage hook libraries, SEO templates, and social media captions.
Support & Sales: Keep your best response templates organized and personalized.
🛠 HOW TO USE
Click the PromptBox icon to open the Side Panel.
Create a new prompt using {{variable}} syntax.
Click any prompt to use it—fill in any variables in the popup.
Paste your perfectly formatted prompt anywhere!
🔄 HISTORY OF CHANGES
v1.6.0 - Added Prompt Groups: Organize prompts into groups with a tab strip filter. Prompts support multiple group memberships. Groups can be created, renamed, reordered, and deleted via a dedicated manager. Existing prompts remain fully accessible in the "All" view without any migration.
v1.5.0 - Added Context Snippets Library: Create and manage reusable context snippets that can be attached to any prompt. Perfect for maintaining consistent documentation, code examples, or guidelines across multiple prompts.
v1.0.1 - Fixed an issue where Summarize, Explain, and Fact-Check buttons occasionally failed to capture the current tab URL in side panel mode.
ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
+ CompareChange default search engine to ChatGPT search.
+ CompareOne stop AI Assistant with GPT, Claude, Gemini: Chat, Write, Translate, Search, Summarize, image generator, video generation
+ CompareSummarize YouTube videos, web articles, and PDFs to save time, powered by ChatGPT, Claude, Mistral AI, and Gemini.
+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.