PDF-ViewerYM

PDF-ViewerYM opens the active PDF on demand in a focused extension viewer. Its main differentiator is support for PDF layers (Optional Content Groups), allowing you to turn document layers on and off directly from the viewer. This is especially useful for technical drawings, layered exports, and PDFs generated from design or engineering tools. Features: - Open the current PDF only when you click the extension - Toggle PDF layers on and off when the document includes Optional Content Groups (OCG) - Continuous document scrolling - Thumbnails and document outline - Manual page navigation - Zoom controls, fit width, fit height, and rotation - Text selection and search PDF-ViewerYM does not replace all PDFs automatically by default. It activates only when the user explicitly clicks the extension on a PDF tab.