SwiftIn — AI translator for web pages and text with voice

AI translator: web pages, selection, translate as you type — 107 languages, bilingual mode and AI voice.

Translate where you work — no tab switching, no copy-pasting. AI translator for the browser in 107 languages with bilingual reading mode and AI voice: web pages, selected text, and input fields. SwiftIn combines full web page translation, instant selection translation, and translate-as-you-type in one browser extension. Works on any website. Free plan: unlimited basic translation plus 100,000 AI tokens every month. Translation is never blocked. Main features: ► Web page translation in two modes: bilingual (original and translation side by side) for reading and language learning, or translation-only for fast comprehension ► Translate as you type in any input field — in three writing styles (Normal, Slang, Business) with intensity control ► Selection translation in a draggable popup with pronunciation ► AI text-to-speech in 70+ languages with male and female voices ► Smart adaptation for popular sites — Wikipedia, Reddit, GitHub, X (Twitter), news portals ► 107 languages with automatic source-language detection ► Free translator: 100,000 AI tokens every month + unlimited basic translation ► Bring Your Own Key (BYOK) — connect your own AI provider API key, no SwiftIn signup required ► Custom keyboard shortcuts for every action ► No tracking, no ads. Translation history is off by default ► Interface in 7 languages: English, Russian, German, French, Spanish, Portuguese, Japanese How to start Sign up with email or Google — 30 seconds, one time. After signing in, SwiftIn works on any website. Or skip the signup entirely by connecting your own AI provider API key in settings — translations go directly through your account. Web page translation Translate entire sites into your language in one click, right in the browser. Launch — SwiftIn button on the side of the screen or hotkey Alt+S. Bilingual mode shows the original and the translation side by side — ideal for reading news, learning a language, or working with foreign documentation. Translation-only mode is for fast comprehension. Smart adaptation preserves the layout of popular destinations — Wikipedia articles, Reddit threads, GitHub, the X feed. Selection translation Select any text fragment on the page — a popup with translation and pronunciation of both original and translation appears next to it. The popup can be dragged, resized, and the translation copied with one click. Works on any website. Translate as you type Write text in any input field — in social media, messengers, mail clients, or contact forms. Click the translate button next to the field or use hotkey Alt+I — SwiftIn replaces your text with the translation. Bring Your Own Key (BYOK) Already have an AI subscription? Connect your own provider API key in extension settings — SwiftIn translates directly through your account. No SwiftIn signup, no subscription, no requests touching our servers. You pay your provider's rate. Three translation styles Every message needs its own tone. For example, depending on the style, the same source sentence can be translated three ways: ► Normal: "I'm not sure that's a good idea" ► Slang: "Hmm, kind of a sketchy plan" ► Business: "I have some reservations about this approach" Styles are available for translate-as-you-type and selection translation, with intensity control from light correction to full rewrite. AI voice Listen to translations in 70+ languages with realistic AI voice. Male and female voices available. Helps you learn correct pronunciation and pick up a new language faster. Voice works for selected text and for entries in your translation history. Unlimited translation SwiftIn pairs unlimited basic translation engines with a monthly AI-token quota. When the AI quota is exhausted, translation continues automatically through the basic engines — you are never blocked. Privacy ► Translation history is stored locally on your device by default. Server sync — only by explicit opt-in on Pro and Team plans. ► Your texts are not used for training AI models. ► No ads, no tracking. Texts are sent only to AI providers for generating the translation — the full provider list with locations is in the Privacy Policy. ► GDPR compliant. AI-processing details — in the Privacy Policy. Keyboard shortcuts ► Alt+S — translate the page or restore the original ► Alt+I — translate the active input field ► All shortcuts can be customized to your preference Customization ► Pin your favorite languages or use automatic detection ► Disable SwiftIn on specific websites ► Light, dark, and system themes Coming soon Actively in development: image translation (OCR), PDF document translation, video subtitles for streaming platforms, and a custom glossary for terminology control. Install free. Sign-up takes about 30 seconds with email or Google. Open any site and click the SwiftIn button or press Alt+S. Questions and feedback — support@swiftin.dev.