postai right where you
tweet and post.
the PostAI extension lives inside x.com and linkedin.com. AI writer overlay, viral score on every post in your feed, one-click adapt — all without switching tabs or breaking your flow.
free with your PostAI account · also works in Arc, Brave, Edge
what the extension does
four features, all running inside the sites you already use
AI writer overlay
X + LinkedInA floating AI panel appears the moment you open the compose box on x.com or linkedin.com. Rewrite, tone-match, and generate variations — without leaving the tab.
one-click LinkedIn adapt
LinkedInSee a post you like on X? One click rewrites it as a long-form LinkedIn post in your voice — same core idea, different format, ready to schedule.
viral score badge
X feedEvery post in your X feed shows a small engagement-potential badge powered by PostAI's viral post corpus. See which posts are likely to go viral before you engage with them.
auto-fill composer
toolbarClick the PostAI icon in your browser toolbar to open a quick compose window. Draft, refine, and schedule a post from any page — without navigating to your dashboard.
get started in 3 steps
install from chrome web store
one click. no configuration, no sign-in required just to install. the extension is live immediately.
connect your postai account
click the extension icon and sign in with your PostAI credentials. your voice model, schedule, and content sync automatically.
write better, everywhere
visit x.com or linkedin.com. the AI overlay appears the moment you open a compose box. no setup. no switching tabs.
browser support
any Chromium-based browser is supported. Firefox support is planned.
permissions — and why we need them
full transparency. every permission the extension requests, and exactly what it is used for. source code is publicly auditable.
never leave the tab to write a great post.
install in one click. free with your PostAI account.