Developer Builds WhatsApp Web Extension to Cut Daily Translation and Reply Friction

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A developer created MSG.AI, a browser extension for WhatsApp Web, to eliminate the repetitive workflow of copying messages into translation tools and manually managing customer replies. Rather than building a standalone app with a separate inbox, the developer chose an extension model so users could stay within their existing WhatsApp Web sessions. The tool supports in-chat translation, reusable replies, and batch messaging with configurable controls. An AI-assisted draft feature was included, but designed to require human review before sending, given the real business consequences of customer commitments. The project evolved from a bulk-messaging utility into a daily translation aid after the developer observed that translation was the more frequent pain point.

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