Select any text — a paragraph you're reading, a sentence you're drafting — and AI acts on it right there. Explain, rewrite, summarize, translate, or ask anything. One click, streamed back in place.
There is nothing to learn. If you can select text, you already know how to use Sely.
Drag across a paragraph, a sentence, a whole page with Ctrl A. The action bar appears beneath your selection.
Explain, Improve, Shorten, Tone, Grammar — or type your own instruction into Ask anything.
Rewrites replace your text live (Keep or Discard). Answers stream into a card (Copy or Retry).
Sely detects whether your selection sits in editable text or a page you're reading, and shows the actions that make sense there. Never the wrong buttons.
+ Add yours with Custom Actions — bottle any prompt, generate it with AI
+ Add yours with Custom Actions — Elaborate, Simplify, Formalize…
The action bar is the beginning. Here's what surrounds it.
Edits stream into your own text. Nothing changes until you say Keep — Discard restores the original, Retry runs it again.
Type any instruction or question about your selection. Explanations stream word-by-word into a card with Copy and Retry.
The free plan shows a live usage meter — what you've used, what's left, and exactly when it resets. No surprise cutoffs.
Name any action — Elaborate, Simplify, Formalize — and Sely drafts its system prompt for you. Pick rewrite or generate, pick where it appears.
Drag the bar anywhere. Dismiss it with × or Esc. Mute entire sites from the bar, the toolbar, or Settings.
No analytics, no telemetry, no history. UI renders in isolated Shadow DOM pages can't touch; BYOK keys never leave your device.
No trial countdowns, no card required to try it.
One principle: every feature ships to everyone. Pro buys headroom, not unlocks — the only thing with a licence is BYOK, because there you pay the provider directly.
Private by architecture, not by promise. No analytics, no telemetry, no conversation history. The interface renders in isolated Shadow DOM that pages can't touch. Read the whole policy — it's one page, because there's almost nothing to disclose.
Sely Free is routed across a small fleet of models managed by Sely, so quality stays consistent and no single provider is a point of failure. Bring your own key to pin any specific model.
Yes. BYOK keys live only in your browser's local storage, never sync in plain text, and requests go directly from the extension to your provider — they never touch Sely's servers.
Each completed AI action. Long selections are truncated to your plan's cap with a notice, so one giant paste can't burn the quota.
Docs renders text on a canvas, so inline replacement isn't possible there — Sely detects it and shows answers in a card you can copy instead.
Three usual reasons: the site is muted (unmute it in Settings), popups are blocked on a page that forbids injection like the Chrome Web Store, or you dismissed it with × — reselect and it returns.
Free plan · No card · 30 seconds to first action.
Add to Chrome — it's free