A powerful PDF management solution for WordPress, Drupal, and React/Next.js
Display PDFs with Mozilla's PDF.js viewer, SEO optimization, and full control over print/download permissions.
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Current Version: 1.2.11 | Platforms: WordPress, Drupal, React/Next.js
A powerful WordPress plugin that integrates Mozilla's PDF.js viewer to serve PDFs through a viewer URL, enhancing SEO with Schema Data, Open Graph Tags, Twitter Cards, and other Meta Tags.
- Clean URL Structure - Display PDFs at
/pdf/document-name/instead of exposing.pdffile URLs - Mozilla PDF.js Integration - Industry-standard PDF rendering in the browser (bundled locally - no external CDN)
- Gutenberg Block - Native block editor support for embedding PDFs in posts and pages
- Auto-Generate Thumbnails - Automatically create thumbnails from PDF first pages using ImageMagick or Ghostscript
- Yoast SEO Compatible - Full control over SEO title, meta description, slug, OpenGraph tags, and Twitter Cards
- Print/Download Control - Allow or restrict printing and downloading on a per-PDF basis
- PDF Archive Page - Automatically generated archive page at
/pdf/listing all PDFs - View Statistics - Track how many times each PDF has been viewed
- Responsive Design - Works on desktop, tablet, and mobile devices
- Shortcode Support - Embed PDF viewers anywhere using
[pdf_viewer]shortcode - Schema Markup - Automatic DigitalDocument schema for rich search results
- Download or clone this repository
- Copy the
pdf-embed-seo-optimizefolder to/wp-content/plugins/ - Activate the plugin through the 'Plugins' menu in WordPress
- Go to 'PDF Documents' in the admin menu to start adding PDFs
- Navigate to PDF Documents > Add New in WordPress admin
- Enter a title for your PDF
- Upload your PDF file using the "Select PDF File" button
- Configure print/download permissions
- Set SEO settings via Yoast SEO meta box (if installed)
- Publish
- In the block editor, click "+" to add a new block
- Search for "PDF Viewer" or find it under "Embed"
- Select your PDF document from the dropdown
- Adjust width and height in the block settings panel
[pdf_viewer] - Display current PDF (on PDF document pages)
[pdf_viewer id="123"] - Display specific PDF by ID
[pdf_viewer_sitemap] - List all published PDFs
| URL | Description |
|---|---|
/pdf/ |
Archive page showing all PDF documents |
/pdf/your-document-slug/ |
Individual PDF viewer page |
- WordPress 5.8 or higher
- PHP 7.4 or higher
- Yoast SEO (optional, for advanced SEO features)
None. All resources are bundled locally with the plugin.
- PDF.js - Mozilla's PDF rendering library (bundled locally)
- Used for: Rendering PDF documents in the browser
- Privacy: No external requests are made; all assets served from your domain
Dedicated admin section for managing PDF documents with custom columns for file info, permissions, and view counts.
Upload PDFs, configure permissions, and use Yoast SEO for full SEO control.
Clean, responsive PDF viewer with navigation, zoom, and optional print/download buttons.
pdf-embed-seo-optimize/
├── pdf-embed-seo-optimize.php # Main plugin file
├── uninstall.php # Cleanup on uninstall
├── README.txt # WordPress.org readme
├── includes/
│ ├── class-pdf-embed-seo-optimize-post-type.php
│ ├── class-pdf-embed-seo-optimize-admin.php
│ ├── class-pdf-embed-seo-optimize-frontend.php
│ ├── class-pdf-embed-seo-optimize-shortcodes.php
│ ├── class-pdf-embed-seo-optimize-yoast.php
│ ├── class-pdf-embed-seo-optimize-block.php # Gutenberg block
│ └── class-pdf-embed-seo-optimize-thumbnail.php # Thumbnail generator
├── admin/
│ ├── css/admin-styles.css
│ ├── js/admin-scripts.js
│ └── views/
├── assets/
│ └── pdfjs/ # Bundled PDF.js library
│ ├── pdf.min.js
│ └── pdf.worker.min.js
├── blocks/
│ └── pdf-viewer/ # Gutenberg block assets
│ ├── editor.js
│ └── editor.css
├── public/
│ ├── css/viewer-styles.css
│ ├── js/viewer-scripts.js
│ └── views/
└── languages/
This plugin follows WordPress Coding Standards:
- Proper escaping with
esc_html(),esc_attr(),esc_url() - Nonce verification for all form submissions
- Capability checks for admin functions
- Prepared statements for database queries
- Internationalization ready with text domain
pdf-embed-seo-optimize
GPL v2 or later - https://www.gnu.org/licenses/gpl-2.0.html
Dross:Media - GitHub
Upgrade to Premium for advanced features:
- Analytics Dashboard - Detailed view/download statistics
- Download Tracking - Track downloads separately from views
- Password Protection - Secure PDFs with passwords
- Reading Progress - Resume where users left off
- Expiring Access Links - Time-limited URLs for PDFs
- Role-Based Access - Restrict by user role
- AI Schema Optimization - GEO/AEO/LLM optimization
- XML Sitemap - Dedicated PDF sitemap
- Categories & Tags - Organize PDFs
- Bulk Import - Import multiple PDFs from CSV
- REST API - 14+ premium endpoints
Get Premium: pdfviewer.drossmedia.de
- Drupal Code Review Fixes - CSRF protection, rate limiting, session cache context
- Media Library Integration - PDFs managed via Drupal's Media Library
- New Services - Rate limiter and access token storage with database backend
- Database Migration - Scalable token storage with automatic cleanup
- iOS Print Support - Enhanced print functionality for Safari/iOS
- Comprehensive Print CSS - Professional print output across all platforms
- Drupal Performance - Removed entity saves during page views
- GDPR Compliance - IP anonymization setting (enabled by default)
- Cache Improvements - Proper cache tag invalidation
See CHANGELOG.md for complete version history.