Prompt Selected is a free Chrome browser extension that enables users to run custom ChatGPT prompts on any text they select on a web page. Created by independent developer Denis, the extension is designed for anyone who regularly works with text in the browser and wants to apply AI-powered transformations without switching between tabs or applications. It operates as a bring-your-own-API-key tool, communicating directly with the OpenAI platform using the user own API key.
Key Features
- Unlimited custom prompts: users can create and save as many custom prompt cards as needed, organized for quick access during browsing sessions
- Prebuilt prompt examples: the extension includes ready-to-use prompt templates covering common tasks such as grammar fixes, summarization, translation, and simplification to help new users get started immediately
- GPT model support: compatible with gpt-4o, gpt-4o-mini, and gpt-3.5-turbo models, allowing users to choose the appropriate capability and cost level for each task
- Prompt history: maintains a history of past prompts along with their inputs and results for reference and reuse across sessions
- Privacy and security: no tracking, no third-party data sharing, and the API key is stored exclusively on the user local machine. The extension service worker only communicates with the OpenAI API
- Lightweight and focused: at 339 KiB, the extension is intentionally compact and designed specifically for text-based prompt workflows without unnecessary features or bloat
Use Cases
- Grammar and style correction: select text on any page and run a grammar fix prompt to receive corrected versions with improved clarity and proper style
- Article and document summarization: highlight long articles, research papers, or documentation to generate concise summaries that capture key points and main arguments
- Language translation: translate selected text between languages using custom translation prompts without leaving the current page or opening separate tools
- Simplified explanations: request simplified versions of complex or technical text passages, making information more accessible for students and non-specialist readers
- Social media content creation: generate tweets, posts, or captions from selected source material with appropriate tone and length for different platforms
- Custom workflows: any text transformation task expressed as a ChatGPT prompt can be automated through the custom prompt system, limited only by the user creativity
How It Works
- Users select text on any web page, open the Prompt Selected extension via the browser toolbar, choose or type a prompt, and receive the result displayed within the extension popup interface
- The extension requires an OpenAI API key entered during onboarding and stored locally on the user machine. It never sends the key to any third party
- Prompt cards can be created, edited, and deleted from the extension configuration interface, giving users full control over their prompt library
- The extension is available for installation from the Chrome Web Store and runs on all Chromium-based browsers including Chrome, Edge, and Brave
Pricing
- The extension is completely free to install and use with no subscription fees, in-app purchases, or premium tiers. Users only pay for their own OpenAI API usage based on the model they select and the volume of text they process
