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Developers share methods for silent thermal receipt printing from web apps

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A developer outlines solutions for printing receipts silently from web applications without user dialogs. The article details three primary approaches: using the standard window.print() function with its limitations, employing the WebUSB API for direct hardware access, and creating a local server bridge program. It highlights technical challenges such as CORS policies, security considerations for localhost services, and inconsistencies in printer hardware. The author concludes by introducing Thermalink, an open-source tool that packages these methods into a cross-platform solution.

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