S15
How it works Features Setup Add to Chrome
Free Chrome extension

Translate what you select. Nothing else changes.

Select text on any page, trigger the shortcut, and the translation is already in your clipboard. S15 runs on your own Cloudflare Workers AI account: no signup with us, no subscription.

Add to Chrome See how it works
Bring your own Cloudflare account. No middleman, no markup.
Translate selection Detected: German
You selected
"Guten Morgen, wie geht es dir?"
Copied to clipboard
"Good morning, how are you?"
Translated in 2s
How it works

Three steps, no other tab

There is no site to open and no box to paste into. The translation happens right where you are reading.

1

Select the text

On any page, with the mouse or the keyboard.

2

Trigger the shortcut

Ctrl+Shift+Y by default, or right-click and choose Translate with S15.

3

Paste it anywhere

The translation is already in your clipboard. Nothing was written on the page.

Features

Built for people who already have a Cloudflare account

No middleman server: every translation talks straight to Workers AI, using your own credentials.

Your own account

Your Cloudflare Account ID and API Token stay in your browser. You pay Cloudflare directly, with no markup from the extension.

Pick the model

Several Workers AI models are available right in the popup. Gemma is the default, and switching is free.

Your own glossary

Pin the exact translation for names and technical terms. Only the terms that show up in the text get sent.

A shortcut you control

The options page shows the current shortcut and links straight to Chrome's own shortcut list.

Nothing gets written to the page

The result only goes to your clipboard. The extension never edits what you are reading.

Interface in 20 languages

The popup and options page follow your browser's language, or whichever one you pick.

Setup

Five minutes, once

  1. 1
    Create a Cloudflare accountFree, and it takes less than a minute.
  2. 2
    Generate an Account ID and an API TokenWith Workers AI access, from the Cloudflare dashboard.
  3. 3
    Paste both into S15's popupThat's it, the shortcut works from there on.
Free tier included with your Cloudflare account

Cloudflare gives every account a free usage tier for Workers AI. The exact limits change over time, so it is worth checking the current numbers on Cloudflare's own site before you decide how much you will be translating.

Past the free tier, you pay Cloudflare for usage, at Cloudflare's own rate. S15 charges nothing, has no paid plan, and never sees the text you translate.