寻求支持多格式单页浏览的JS插件/Ruby gem（带分页导航）

Hey there! Since you've already explored PDF.js (PDF-only) and Google Docs Viewer (lacking single-page controls), let's dive into JS plugins and Ruby gems that can cover your full range of file types (PDF, DOC, PPT, TXT) with the required single-page display and navigation buttons.

JavaScript Plugins #

Let's break this down by file type, plus flexible integrations to fit your needs:

PDF (Enhancing PDF.js) #

You're already using the right tool for PDFs—PDF.js absolutely supports custom single-page navigation. Here's how to tweak it:

• Use pdfjsLib.getDocument() to load your S3-hosted PDF.
• Instead of rendering all pages at once, only render the current page index.
• Add "Previous Page" / "Next Page" buttons that update the page index and re-render the target page.
• Disable scrolling with CSS (body { overflow: hidden; }) or JS event listeners to prevent accidental page jumps.

DOC/DOCX #

• mammoth.js: This library converts DOCX files to clean HTML. You can split the generated HTML into page-sized chunks (based on your viewer container's height) and build navigation buttons to switch between chunks. For older DOC files, convert them to DOCX first (via tools like LibreOffice CLI, which you can wrap in your backend workflow).
• docx-preview: A lightweight option for rendering DOCX directly in the browser. Pair it with custom pagination logic to split content into single, navigable pages.

PPT/PPTX #

• pptxjs: Parses PPTX files and lets you render individual slides. You can easily map "Previous"/"Next" buttons to slide index changes, which fits your single-page requirement perfectly.
• reveal.js: Convert PPT/PPTX to Reveal.js-compatible markdown/HTML (via tools like pandoc), and you'll get built-in slide navigation controls out of the box—just disable auto-scrolling and stick to button-based navigation.

TXT #

TXT files are straightforward to handle:

• Load the text content via fetch() from your S3 bucket.
• Split the text into chunks based on line count or character limits that fit your single-page container.
• Use buttons to toggle between these chunks, and lock scrolling on the viewer container to prevent unintended navigation.

Ruby Gems #

If you prefer handling some processing on the Ruby backend:

• roo: A versatile gem that can read content from PDF, DOCX, PPTX, and TXT files. Use it to split content into page-sized segments server-side, then pass each segment to your frontend for rendering with navigation buttons.
• ruby-docx: For focused DOCX handling, this gem lets you extract text and formatting, which you can paginate before sending to the browser.
• prawn (PDF-focused): If you need to generate custom paginated PDFs from other file types (like converting TXT to structured PDF), Prawn handles server-side pagination—you can then display the output with the PDF.js setup mentioned earlier.

Key Considerations #

• S3 CORS: Ensure your S3 bucket has the correct CORS policy to allow browser requests for the files.
• Large Files: For big documents, implement lazy loading (only load the current page's content) to avoid performance hits.
• Consistent UI: Wrap all these integrations in a unified viewer component so your users get the same navigation experience across all file types.

内容的提问来源于stack exchange，提问作者furiabhavesh