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PDFx: Bundle Multiple PDFs in One File
PDFx extends the PDF standard to bundle multiple documents into a single backwards-compatible file — no zips, no folders, just one file any PDF viewer opens normally.
PDFx bundles multiple PDF documents into a single file using an embedded JSON manifest, while staying fully compatible with any standard PDF viewer. The format is open, the desktop app runs on macOS, Windows, and Linux, and is built with Electron, TypeScript, and React.
Why a vibe-coder should care
If you regularly send sets of related documents — contracts, reports, portfolios — PDFx replaces the zip archive with a single file the recipient can open without any special software.
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