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About Riff
Riff is a free Chrome extension that helps you reply on X, LinkedIn, Facebook and Instagram. You paste your rough point. Gemini Nano, the AI built into Chrome, writes a fresh reply for that exact post. You read it, edit it if you want, and press send yourself.
Riff also answers your DMs in LinkedIn Messaging, Messenger on facebook.com and Instagram Direct. When a chat is new, it writes the first message. It can draft your own posts too. Drop in rough notes, ask for changes in plain words, and pick a hook you like.
You set how it sounds. Choose how smart, how salesy and how bold the reply should be. Tell Riff once who you are and how you write, and it follows that voice. Each draft is checked against your recent replies, so it does not repeat itself.
Everything runs on your computer. There is no account, no API key, no server and no monthly bill. Your notes, drafts and history stay in Chrome on your machine. Riff never posts or sends anything for you.
- Who it is for
- People who reply, comment and message a lot on X, LinkedIn, Facebook and Instagram.
- Problem it solves
- Writing good replies, comments and DMs from a blank box takes time, and most AI reply tools need an account, an API key or a monthly bill, and send your text to a server.
- The solution
- You paste your rough point and Gemini Nano, the AI built into Chrome, writes a fresh reply for that exact post. You read it, edit it if you want, and press send yourself.
- What makes it unique
- Everything runs on your computer. There is no account, no API key, no server and no monthly bill, and Riff never posts or sends anything for you.
Features
Fresh replies for each post
Replies written for the exact post on X, LinkedIn, Facebook and Instagram.
Answers DMs
Answers DMs in LinkedIn Messaging, Messenger on facebook.com and Instagram Direct.
Drafts your posts
Turns rough notes into posts and X threads, then edits them when you ask.
Runs on your computer
Uses Gemini Nano in Chrome. No account, no API key, no servers.
Never posts for you
It fills the box and you press send.
Details
- Platforms
- Windows
- macOS
- Linux
- Browser extension
- Pricing
- Free
- Built for
People who reply, comment and message a lot on X, LinkedIn, Facebook and Instagram.
- Building since
2026
Technology
A screenshot of a website with the words "Replaces and DMS, too."
1 / 2Website performance
Independent mobile lab measurements and permanent weekly competition results from IndieTools Speed.
79GoodMobile Lighthouse
Last checked
- Load time
- 683 ms
- FCP
- 1.23 s
- LCP
- 4.72 s
- CLS
- 0.000
- TTFB
- 4 ms
- TBT
- 157 ms
- Speed index
- 4.11 s
Latest Performance Score: 79. Measured: October 17, 2026. Weekly Overall Rank: not finalized. LCP: 4.72 s. Load Time: 683 ms.
- Overall rank
- Not finalized
- Best overall rank
- Not finalized 0 top 10 finishes
- Best category rank
- Not finalized 0 category wins
- Latest change
- +12 score No finalized score yet
Website performance history
Inspect every successful mobile Lighthouse lab measurement by metric and date range.
Range
Metric
Latest score
79 / 100
Higher is better
3 measurements
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