Riff

What is Riff?

Riff is a Chrome extension designed for X, LinkedIn, Facebook, and Instagram. It takes a rough idea or point from the user and generates a fresh reply tailored to the specific post, comment thread, or direct message. The tool also drafts original posts and initial outreach messages from brief notes.

The extension runs locally on the user's computer using Gemini Nano, the AI model built directly into the Chrome browser. Because it processes data on-device, it does not require external servers, API keys, or a paid subscription. Users can adjust output tone and style using simple dials before reviewing the generated text.

Riff fills the appropriate reply box, chat window, or post editor with the drafted content. The interface includes quick rework options like shorter, punchier, or more human variations. Users must manually click send or post after reading the draft, as the extension never publishes or transmits content automatically.

Riff features

• Generates fresh replies for X, LinkedIn, Facebook, and Instagram
• Drafts replies to DMs on LinkedIn, Messenger and Instagram Direct, and writes first messages
• Writes original posts and first messages from rough notes
• Runs locally on Chrome using the built-in Gemini Nano AI
• Includes tone and style dials for customizing output
• Allows iterative editing with plain language commands
• Never sends content automatically; requires manual approval

Who uses Riff and for what

• Responding to comments on professional networking sites with tailored advice
• Drafting follow-up messages after meeting someone at an event
• Creating LinkedIn posts about case studies or industry lessons
• Answering DMs on LinkedIn, Facebook and Instagram
• Writing initial outreach messages to potential clients
• Repurposing rough notes into polished social media updates

Riff FAQ

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