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SwiftIn LogoSwiftIn

Quick start

Install. Translate.

No account. No setup. No captcha. Install the extension — and SwiftIn works on every page on the web.

Unlimited100+ languages
Press Alt+S on a foreign-language page → bilingual translation appears

Translate a whole page

On any foreign-language site, page translation works in two modes. Translation only (default) replaces the original with the translation — fast reading. Bilingual shows original and translation side by side — great for reading articles or learning the language.

Highlight text on a page → translation popup appears

Translate just the part you need

Highlight any text on the page — the translation pops up in an instant. The same popup also has the speaker for audio, an engine picker, and translation styles.

Type message in native language → press Alt+I → text replaced with translation

Translate as you type

Writing a reply in your language? Trigger input translation — your text gets replaced with the translation in the recipient's language. Works in any text input on the web.

AI translation — Gemini, DeepSeek, Grok and more after sign-up

A free account adds context-aware AI translation. 100K AI tokens and 1,000 TTS tokens every month. 30 seconds to sign up.

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Common issues

Most setup friction comes from the browser or the site you're on. Each row below covers a real first-time-user case.

NOT_PINNED

I don't see the SwiftIn icon in the toolbar

Chrome and Firefox hide extension icons by default. Click the extensions puzzle-piece icon in your toolbar, find SwiftIn, and pin it. The "S" icon now stays visible.

FIRST_RELOAD

First page doesn't translate right after install

Pages already open when you installed the extension don't have the content script injected yet. Reload the tab once and the floating button + hotkey come alive.

NO_ACCESS

Doesn't work on chrome://, about:, file:// or extension pages

Browsers block content scripts on internal and local pages by design — SwiftIn can't inject there. Use it on regular http(s) pages.

POPUP_BLOCKED

Toolbar popup doesn't open

A previous browser session may have crashed the popup. Right-click the SwiftIn icon → "Manage extension" → toggle SwiftIn off then on. The floating button on the page still works in the meantime.

AI_LOCKED

AI models look greyed out

Guest browsers get Google and Bing only — they're unlimited and free. Sign up for a free account to unlock AI models with 100K monthly tokens.