AI Shortcuts for Arc Browser on Mac

Arc Browser reimagines how we interact with the web, and Echoo adds AI text transformation to every web page and web app you visit in Arc. Whether you are composing emails in Gmail, writing posts on social media, or filling out forms, Echoo shortcuts work in any text field across the browser.

Arc's Spaces feature means you often work in multiple contexts simultaneously. Echoo adapts to each context without configuration. In your Work space, use Professional Tone for polishing emails and documents. In your Personal space, use Casual Tone for social media and messages. The same shortcuts work across all Spaces, but you choose which command to trigger based on your current context.

Arc's split view is a powerful combination with Echoo's popup output mode. Open a reference document on one side and your writing on the other. Select text in your writing, run a command, and the popup appears over your work while the reference stays visible. This is ideal for research workflows where you need to summarize, translate, or rewrite content while keeping source material in view.

For web developers who use Arc as their primary browser, Echoo's code commands work in browser-based development tools. Select code in browser DevTools, CodePen, GitHub's editor, or any online IDE, and get AI-powered improvements. The Code Improver and Explain Error commands work on code in any web-based interface, not just desktop editors.

Arc's Little Arc windows are perfect for quick AI text processing. Open a Little Arc window with a text field, type or paste content, select it, and run your Echoo command. This creates a lightweight AI processing workflow without opening a full browser window.

Google Gemini and OpenAI both provide fast responses ideal for the rapid pace of browser-based work. When translating foreign web content in Arc, Google Gemini handles most language pairs excellently. For polishing professional content in web apps, OpenAI produces clean, reliable results.