ViewerJS must be the easiest way to use presentations, spreadsheets, PDF's and other documents on your website or blog without any external dependencies. No tricks, no conversions, no unexpected downtime from external services, and no plugins required – it happens to work just fine in all major browsers today from the comfort of your own webserver. Free of cost, free as in open source (so you can tweak it yourself) and very easy to use.

ViewerJS combines a number of excellent open source tools that are built on HTML and javascript. ViewerJS was funded by NLnet foundation and developed by KO GmbH. The heavy lifting in ViewerJS is done by these awesome projects: WebODF is a JavaScript library created by KO GmbH. It was started by Jos van den Oever at KO and is now developed by a growing team including external collaborators. It makes it easy to add Open Document Format (ODF) support to your website and to your mobile or desktop applications.

June 25, 2025 - Explore our Open Source JavaScript Viewer Libraries to seamlessly view PDF, DOC/DOCX, XLS/XLSX documents in native JavaScript apps. Enhance your web development with powerful, easy-to-integrate document viewer APIs.

October 30, 2024 - Build a powerful JavaScript document viewer and editor · WebODF(opens in a new tab) is an open source JavaScript library for rendering Open Document Format (ODF) files, such as text documents, spreadsheets, and presentations.

The IDRViewer is a pure HTML/JavaScript/CSS viewer designed to display PDF and Office documents in the browser. It works alongside BuildVu which converts PDF documents to HTML5 or SVG pages. - idrsolutions/idrviewer

June 25, 2025 - PDF.js is an open source JavaScript and HTML5 based PDF viewer library developed by Mozilla that allows viewing PDF (Portable Document Format) documents in the browser.

Atalasoft Web Document Viewer repository for redistribution of client-side JS packages - Atalasoft/web-document-viewer

Dynamsoft Document Viewer does not rely on any external third-party JavaScript library. All processing, such as rendering and editing, is securely performed within the browser.

EmbedPDF is a blazing-fast, MIT-licensed JavaScript PDF viewer that works with React, Vue, Svelte, and plain JS. Fully customizable, zero vendor lock-in, and perfect for modern web apps.

ViewerJS: Document Reader in JavaScript (release repo, for package/dependency managers) - webodf/ViewerJS_release

A general-purpose, web standards-based platform for parsing and rendering PDFs.

Explore Nutrient Web SDK’s JavaScript PDF viewer library to render, annotate, edit, and customize documents and images in the browser.

IIIF Document Image Viewer · Get Started View on GitHub · MS Bodley 264, f. 188v · Hover your mouse over the videos to see Diva.js in action. Your browser does not support the video tag. Diva.js features several ways of navigating document images, either quickly to get to the page you are interested in, or slowly to zoom in on the fine details. Your browser does not support the video tag. "Shift page" makes openings line up, providing a smoother reading experience.

January 5, 2026 - For advanced features such as annotations, form filling, and cross-framework support, the Syncfusion JavaScript PDF Viewer stands out as an enterprise-grade solution. Each library has unique strengths, so review their documentation and select ...

February 20, 2025 - Typically, developers have a few minimum requirements for a viewer: it must display PDFs and Microsoft Office documents, should embed easily into their front-end HTML/CSS/Javascript. Sometimes additional features are needed, such as additional file support, signature, annotation, or redaction. ViewerJS is an open source product powered by PDF.js, a viewer created by Mozilla for its Firefox browser.

February 6, 2026 - This guide is designed to walk you through using both PDF.js and ComPDF for Web to build a JavaScript PDF viewer, allowing users to view and interact with PDF documents directly in a web browser without the need for an external PDF reader.

Also of note is improved compression in generated documents (which should be much, much smaller now) thanks to JSZip, a javascript library for creating, reading, and editing ZIP files. So go to the Download page and update your deployment of webodf.js or the Wodo.TextEditor. Or check the demos (general, features). ... The project WebODF has been awarded with the third price in the Open Source ...

<!--PDF--> <link rel="stylesheet" href="./include/pdf/pdf.viewer.css"> <script src="./include/pdf/pdf.js"></script> <!--Docs--> <script src="./include/docx/jszip-utils.js"></script> <script src="./include/docx/mammoth.browser.min.js"></script> <!--PPTX--> <link rel="stylesheet" href="./include/PPTXjs/css/pptxjs.css"> <link rel="stylesheet" href="./include/PPTXjs/css/nv.d3.min.css"> <!-- optional if you want to use revealjs (v1.11.0) --> <link rel="stylesheet" href="./revealjs/reveal.css"> <script type="text/javascript" src="./include/PPTXjs/js/filereader.js"></script> <script type="text/javasc