Modufile's Merge PDF tool lets you combine PDF files and images into a single document directly in your browser. It uses the pdf-lib library running entirely on the client side, so your files are never uploaded to any server. You can merge multiple PDFs, add images (JPG, PNG, WebP, HEIC, and more), reorder them with drag and drop, and download the result instantly — with no file size limits, no account required, and no watermarks on the output. This makes it a privacy-first alternative to tools like iLovePDF or Smallpdf, which process files on their servers. Whether you need to combine contracts, join scanned pages, add photos to a report, or merge PDF documents, Modufile handles it without compromising quality or privacy.