Ohm·Tang

🎯OhmTang SD (Simple Download) adds secure download buttons to WooCommerce product pages for free digital downloads. It enhances WooCommerce’s native download functionality with front-end buttons and protection features.
⚡This plugin is suitable for stores that offer free digital resources such as manuals, guides, samples, and documentation.
⚠️Not for paid digital products: This plugin bypasses WooCommerce’s purchase verification. Do NOT use on stores selling paid downloadable digital products.
<h4>✨ Key Features ✨</h4>
<ul>
<li>📦 Simple Download Buttons: Automatically adds download buttons to WooCommerce products with downloadable files</li>
<li>📍 Flexible Positioning: Choose from 7 different positions to display download buttons on product pages</li>
<li>🔒 Advanced Security: Rate limiting, IP blacklist/whitelist, and nonce verification</li>
<li>📄 File Information Display: Shows file name, extension, and size for each download</li>
<li>🎨 Customizable: Custom text and appearance options</li>
<li>📱 Mobile Responsive: Optimized for all devices</li>
<li>⚙️ Admin Settings Panel: Comprehensive settings page with all configuration options</li>
</ul>
<h3>⚙️ Configuration</h3>
Navigate to WordPress Admin → OhmTang SD to configure:
<ul>
<li>🛒 WooCommerce Integration: Enable/disable WooCommerce integration</li>
<li>📍 Display Position: Choose where to show download buttons (7 options available)</li>
<li>⏱️ Rate Limiting: Set download limits per IP and time period</li>
<li>🚫 IP Filtering: Configure blacklist/whitelist for security</li>
<li>🎨 Appearance: Customize text</li>
</ul>
<h3>🔒 Security Features</h3>
<ul>
<li>⏱️ Rate Limiting: Configurable download limits per IP address (default: 5 per hour)</li>
<li>🌐 IP Filtering: Support for IP blacklist and whitelist with CIDR notation and wildcards</li>
<li>🔐 Nonce Protection: CSRF protection for all download requests</li>
<li>🌍 Real IP Detection: Supports Cloudflare and proxy environments</li>
<li>📂 File Validation: Secure file path validation</li>
</ul>
<h3>📍 Display Options</h3>
Choose from 7 positions to show download buttons: 
* 💰 Below product price 
* 🛒 Above add to cart button 
* ✅ Below add to cart button 
* 📊 Below meta information 
* 📝 Above product details 
* 📋 Below product summary (default) 
* 🔗 Below related products
<h3>WooCommerce Integration</h3>
OhmTang SD integrates seamlessly with WooCommerce products that have downloadable files:
<ul>
<li>Automatic Display: Download buttons automatically appear on product pages with downloadable files</li>
<li>Product Verification: Only shows for products that are marked as downloadable in WooCommerce</li>
<li>Native Compatibility: Uses WooCommerce’s built-in downloadable product functionality</li>
<li>No Purchase Required: Designed for free downloads – bypasses purchase verification</li>
</ul>
<h3>🎨 Customization Options</h3>
<ul>
<li>✍️ Text Customization: Custom titles, button text, notices, and error messages</li>
<li>⏱️ Rate Limiting: Adjustable periods (minute to year) and per-product options</li>
<li>📄 File Display: Shows file name, extension, and size</li>
<li>📅 Time Units: Flexible rate limiting periods (minute, hour, day, week, month, year)</li>
</ul>

OhmTang SD (Simple Download) for WooCommerce

Free download buttons for WooCommerce stores with security features. Rate limiting & IP filtering. Perfect for free resources, not paid downloads.

Conductor Digital

Conductor QR Generator allows you to upload approved files and instantly create:
<ul>
<li>A short download URL (example: /q/AbC123) </li>
<li>A printable QR code image </li>
</ul>
When scanned or opened, the file is automatically downloaded without any preview page.
This plugin is ideal for:
<ul>
<li>Construction & engineering documentation </li>
<li>Training centers & institutes </li>
<li>Secure document delivery to clients or authorities </li>
<li>Any use case where you want a clean QR → instant file download flow</li>
</ul>
A live demo of the plugin working is available here: 
https://conductordigital.dev/qr-system/
<h4>Key Features</h4>
<ul>
<li>Frontend upload via shortcode <code>[conductor_qr_generator]</code></li>
<li>Auto-created QR upload page at <code>/qr-system</code></li>
<li>Instant QR + short URL generation</li>
<li>Forced file download (no preview, no extra clicks)</li>
<li>Download counter per QR</li>
<li>Branding options (logo + footer text under the QR)</li>
<li>Admin dashboard with statistics and bulk delete</li>
</ul>
<h3>External services</h3>
This plugin uses a third-party QR code API as a fallback when generating QR images:
Service: <code>https://api.qrserver.com/</code> (GoQR / QR Server API) 
Purpose: 
Used to obtain a base PNG QR code image for the short URL (<code>/q/<token></code>). The plugin then optionally composites this QR with a caption and branding.
Data sent: 
Only the short URL is sent as the <code>data</code> parameter in the QR request, for example:
<pre><code>https://api.qrserver.com/v1/create-qr-code/?size=300x300&data=https%3A%2F%2Fexample.com%2Fq%2FAbC123%2F
</code></pre>
No personal data or user-identifying information is transmitted.
Terms and Privacy:
<ul>
<li>Terms: https://goqr.me/api/doc/create-qr-code/ </li>
<li>Privacy: https://goqr.me/privacy/</li>
</ul>
If the external API is unreachable, the plugin falls back to a plain QR URL and continues to function.

Conductor QR Generator

Generate secure QR codes with short URLs for instant, forced file downloads with branding and admin statistics.

OhmTang SD (Simple Download) for WooCommerce vs Conductor QR Generator