https://www.tutorialspoint.com/online_document_viewer.php
Online Document Viewer (Open PowerPoint PPTX, Word DOCX and PDF Documents) - Online Tools for Working Professionals and Students
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https://www.raymondcamden.com/2021/08/30/using-pdfs-with-the-jamstack-building-a-document-viewer
Using Adobe PDF Services to build a document viewer for your Jamstack site
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https://nkinfo.unikorea.go.kr/nkp/viewer/doc.html?fn=pblictn_214_2&rs=/nkp/attach/viewer/rs
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https://okular.kde.org/
Multi-platform, fast and packed with features, Okular allows you to read PDF documents, comics and EPub books, browse images, visualize Markdown documents, and...
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