Read books & watch videos with instant translation

CIRCØ is a free, private, browser-based reader and video player with built-in tap-to-translate. Read EPUB books, PDF documents, and CBZ/CBR comics, or watch videos with subtitles — tap any word or select a phrase to translate it. No account, no install.

• Tap-to-translate words and phrases in EPUB books
• Select-to-translate text in PDF documents
• Draw a rectangle to OCR-translate text in CBZ/CBR comics and manga
• Watch videos and tap subtitle words to translate them on the fly
• Keeps your library and progress in the browser — private by design
• Installable as an offline-capable progressive web app

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How to read & watch with instant tap-to-translate →

Learn more: full guide · EPUB translator · FB2 translator · PDF translator · manga & comic translator · subtitle translator · YouTube subtitle translator · TikTok subtitle translator · offline AI translator · vocabulary & progress · CIRCØ Extension · CIRCØ Lab · reversed subtitling

For support, inquiries, or feedback, email us at circ0@circ0.com.