Riff is a Chrome extension for X, LinkedIn, Facebook and Instagram. It replies to posts, answers your DMs, and now writes your own posts and first messages too. Give it your point, and Gemini Nano, the AI built into Chrome, writes it fresh for that exact post, chat or post box, right on your computer. You press send.
No servers, no API keys, no monthly bill.
most landing pages lose people in 5 seconds. the headline says what you do, not what they get. i do free 15 min audits
Riff lives in Chrome's side panel. Open it from the toolbar or with Alt+Shift+R, and it follows whichever site, chat or post box you're on.
Click the wave button next to a post's Reply or Comment button, or click into a chat's message box. Riff reads the post and its context, or the whole conversation. Starting a post of your own? Click into the post box instead.
Write it rough. Riff never copies it word for word. In a DM you can leave it empty: Riff answers what they wrote. For a new post, rough notes are plenty.
Choose how smart, how salesy and how adventurous, then press Enter. The reply streams in, sized to the site's limit.
Rework it in one click: Shorter, Punchier, Softer pitch, Bolder, More human or + Question. Riff then fills the reply box, the chat's message box or the post box, and sending is your call.
Click into a new post box on LinkedIn, X or Facebook, or open a new message, and the panel switches from Riff a reply to Riff a post. Drop your rough notes and Riff drafts it. Then say what to change, like a chat. Insert fills the post box, and you press Post.
Rough is fine, or start from a saved point. Riff never invents a result, a number or a client you didn't give it.
Press 3 hooks for three opening lines. Pick one and Riff rebuilds the draft around it, with the hook before the “see more” fold.
“Shorter.” “Open with the result.” “End with a question.” Plain words, like a chat, or one tap on a rework chip.
Go back to any of them with Use this, or edit the current draft right in place. The counter and Fresh score follow along.
Riff fills LinkedIn's post box. Picked Link in comments? It hands you the link to paste as your first comment.
Pick Repurpose under a draft and Riff refits it for another site: the LinkedIn post becomes an X thread or an Instagram caption, each in that site's length and shape.
client win: rewrote a pricing page headline around the outcome. demo requests up 38% in 3 weeks. what's the lesson
Same traffic. 38% more demo requests. One headline. A client's pricing page headline said what the company does, not what buyers get. We rewrote it around the outcome. Three weeks later, demo requests were up 38%. What does the first line on yours say?
Hook before “see more”, short lines, and the link saved for your first comment.
1/3 Same traffic. 38% more demo requests. One headline change. The old headline said what the company does. The new one says what buyers get.
One idea per post. Insert fills the boxes you have open, and you press Post all.
one headline. 38% more demo requests. we rewrote a client's pricing page around what buyers walk away with, instead of what the company does. three weeks later, the demos followed. the before and after: link in bio
The first line does the work before “more”, and the link becomes “link in bio”.
One sharp idea in 280 characters, or set Thread and Riff writes a numbered thread of three to seven posts.
Post as yourself or as your company. Each brand gets its own Voice and one or two sample posts, and you pick it in the dials.
Save post type, goal, hook, ending, format, hashtags and brand as one chip, like “Weekly client win” or “Launch teaser”.
The canvas stays put between sessions, so a post you circle for a few days is right where you left it.
Riff reads the site from your tab and switches its limits, tone and link handling to match. Here's one post and one point, riffed four ways, and the shape each site gives a post of your own.
Spent the whole weekend redesigning our landing page. Traffic is fine. Signups haven't moved an inch. What am I missing?
most landing pages lose people in 5 seconds. the headline says what you do, not what they get. i do free 15 min audits
Flat signups on steady traffic usually means the first five seconds. Does your headline say what you do, or what they get? Lead with the outcome. I do free 15 min audits if you want a second look: yoursite.com/audit
Short and punchy, hashtags off by default.
One sharp idea, or Split into thread for a numbered thread.
Steady traffic with flat signups is one of the most fixable problems on the web. In most audits I run, the page explains what the company does, but the first screen never says what the visitor walks away with. Rewrite the headline as an outcome and give it a week. If you'd like a second pair of eyes, I do free 15-minute audits: yoursite.com/audit
Professional but human: a real perspective instead of “Great post”. Reads the author's headline too.
A hook before “see more”, short lines, and your link saved for the first comment.
Oh, I feel this one. When traffic is fine but signups stay quiet, it's almost always the first five seconds. Make the headline about what people get. Happy to take a look, I do free 15 minute audits: yoursite.com/audit
Warm and conversational. Works on feed posts, groups, pages and permalink pages.
One or two short paragraphs by default, and longer when you ask for Long.
redesign weekends are the best kind of tired. if signups won't budge, sell the result in your headline. happy to look, i do free audits
Casual and short, reacting to the photo or caption. Links stay out, since Instagram comments can't click them.
The first line does the work before “more”, and links become “link in bio”.
Riff answers your messages in LinkedIn Messaging, Messenger on facebook.com and Instagram Direct, in each site's chat pop-ups and on its full messages page. Click into a chat's message box and Riff reads the conversation. Here's one message, answered three ways. When the chat is still empty, Riff writes the first message.
Hi Dana! Loved your thread on landing pages 🙌 What would it cost to have you look at our pricing page? Free for a call Thursday at 3?
Riff answers what they asked and moves things forward, without picking the time or the price for you.
Hi Marcus, glad the thread helped! Before we pick a time, what's the one thing you want the pricing page to do better? Send me the link and I'll take a first look.
Message-length and clear. A short greeting only when the conversation is new, and never a sign-off or a signature.
So glad it was useful! Happy to look. What's bugging you most about the pricing page right now? Send me the link and we'll sort out timing.
Short and casual, like texting. Facebook sends on Enter, so Riff pastes the draft in one go and you press Enter.
glad it helped! 🙌 what's the main thing you want the pricing page to fix? send me the link and we'll find a time
The shortest of the three, matching how they write, emoji and all. Pasted in one go; you press Enter.
Open a new message on LinkedIn, Facebook or Instagram and there's nothing to answer yet, so Riff switches to a first message. Pick why you're writing and how well you know them, add a line of notes, and Riff drafts a short message with one clear ask. Cold stays respectful and never pretends you've met.
Leave it empty and Riff works out the reply from what they wrote. Add one when you want to steer it.
Asked for a time, a price or a yes or no? Riff asks a short question back or lets them suggest. The call stays yours.
When your message is the latest one, Riff drafts a friendly nudge that gives them an easy reason to answer.
Insert fills that chat's message box. On Facebook and Instagram, where Enter sends, Riff only ever pastes.
Turn the pitch off when a post just deserves a good answer, or go direct when the moment's right. On personal, sad or off-topic posts, Riff suggests turning it off. Your own posts get a few dials of their own.
Plain keeps it simple. Sharp is smart and conversational. Expert brings precise terms and one non-obvious insight.
Auto reads the post and picks the play, or choose one yourself.
Safe, Steady, Fresh, Bold or Wild: how adventurous the wording gets, from predictable to maximum variety.
Length follows the site: on LinkedIn, Short is about 160 characters and Full about 650; in a Messenger chat, about 90 and 420. Emoji on adds one or two that fit the mood; off means none at all.
Or write in English, Spanish, French, German or Japanese.
Keep your links in the Library with a “use for” note, and Auto picks the right one for each post.
When you riff a post, these join the dials. Tone, intelligence, pitch, spin, emoji and language work in both modes.
Auto picks the shape from your notes, or choose one yourself.
The goal sets the ending and how hard the pitch leans. Leads invites the right people to get in touch.
The first line decides whether anyone reads on. Or press 3 hooks and pick it yourself.
Auto follows the goal. Link in comments hands you the link to paste as your first comment.
Replies never get lists or hashtags. Posts can have both, as many as you allow.
On LinkedIn, Medium is about 900 characters and Long about 1,600. Thread is for X.
Pick which brand is posting. Save any mix of these dials as a preset and set it all with one tap.
Press Enter and every reply or post goes through four stages. A draft that misses gets rewritten quietly, up to twice.
Gemini Nano reads the post, or the conversation from their side, and notes the topic, their mood, what they want and one detail worth picking up. For a post, it reads your notes.
A session primed with your Voice and dials writes the reply, with a different opening move every spin. In a DM it answers their latest message first and never decides a time, a price or a yes or no for you. A post gets a hook in the first line and nothing you didn't give it: no invented results, numbers or clients.
The draft has to fit the limit, skip your Never say list and read as new next to your pasted point and your last 60 replies. Posts are checked against your recent posts, and no two open the same way.
Labels and em dashes come out, hashtags too unless your post asks for them, any link the model invented is removed, and your link goes where you asked.
Fill in Voice once: who you are, what you offer, who it's for, how you sound, and one reply and one post you're proud of. Post for a company too? Give the brand a Voice of its own. Riff puts it behind everything it writes, and it stays on your computer.
Gemini Nano runs inside Chrome on your machine. Your Voice, brand voices, links, saved points, post canvas and history live in Chrome's storage on this computer. When you answer a DM, Riff reads that one conversation on your device and keeps it only until the tab closes. No servers, no API keys, no monthly bill.
Riff never presses Reply, Comment, Post, Send or Enter. Each reply or post is written for one box and sent by you, which keeps you within the automation rules of X, LinkedIn, Facebook and Instagram.
Installing takes about two minutes. The first time you open the panel, click Download Gemini Nano. Chrome fetches the model once, and after that everything runs offline.
Add to ChromePanel says AI unavailable? Open chrome://on-device-internals to see what Chrome reports.
No. Riff fills the reply, comment, message or post box and stops there. It doesn't schedule or publish anything. You read it, and you press send.
Yes. Click into a new post box on LinkedIn, X or Facebook and the panel switches to Riff a post. Drop rough notes, ask for 3 hooks if you like, and tell it what to change in plain words. Every answer is a new version you can go back to.
Yes. Set Thread in the post dials, or press Split into thread under a draft. Insert fills the post boxes you have open; press + on X for more boxes, then Insert again.
Yes. Give each brand its own Voice and sample posts, then pick the brand in the post dials. A preset can carry the brand too.
Yes: LinkedIn Messaging, Messenger on facebook.com and Instagram Direct, in each site's chat pop-ups and on its full messages page. Click into a chat's message box, or the wave button next to it, and Riff reads the conversation. Your point is optional there. When a chat is still empty, it writes the first message instead.
No. If they ask for a time, a price or a yes or no, Riff asks a short question back or lets them suggest one. The decision stays yours.
Riff writes a short, friendly follow-up that gives them an easy reason to answer, without repeating what you already said.
No. Riff runs on Gemini Nano, the model built into Chrome, so there are no servers to sign up for and no keys to paste.
Riff reads posts on the desktop sites of X, LinkedIn, Facebook and Instagram, and chats on LinkedIn, Facebook and Instagram. Anywhere else, paste the post or message into the panel and choose which site you're writing for.
Not yet. Use Messages on facebook.com: a chat pop-up on any Facebook page, or the full page at facebook.com/messages.
Match the post replies in the post's own language. You can also pick English, Spanish, French, German or Japanese. Older versions of Chrome only support English, Spanish and Japanese on-device, and updating adds French and German.
That's what the Fresh score is for. Each spin opens a different way, avoids openings you've already used, and is checked against your last 60 replies. Posts get the same check against your recent posts, plus a list of tired openers they never start with.
Alt+Shift+R opens Riff (Option+Shift+R on a Mac). Enter riffs, Shift+Enter adds a line, Ctrl or ⌘+Enter inserts the draft, and Esc stops a riff.
Something else? The manual has a page for every move →
Español
Français
Deutsch
日本語