KISS Translator

Open-source bilingual translation browser extension and userscript for web pages, input fields, and YouTube subtitles.

Browser extensionfree

KISS Translator is a free, open-source browser extension and userscript that displays bilingual original-plus-translated text across web pages, input fields, hover tooltips, and YouTube subtitles. It supports many translation backends, including Google, Microsoft, DeepL, and various LLM providers, along with custom rules and cross-device sync. It's for readers who want in-place bilingual translation rather than replacing the original text entirely.

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Problem & pain-point mapping
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Trust & credibility signals

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