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signwpdf

signwpdf PDF Sign & Fill is a professional WordPress plugin that enables you to upload fillable PDF forms, collect electronic signatures, and store completed documents securely. Perfect for contracts, agreements, waivers, and any document requiring signatures.
Core Features: 
* Upload fillable PDF templates 
* Collect digital signatures via web forms 
* Store signed agreements securely in WordPress 
* Email notifications for completed documents 
* PDF generation with TCPDF library 
* Audit trail and certificate generation 
* Template management system 
* Shortcode integration for forms 
* Gutenberg block support 
* AJAX-powered signature collection
Premium Features (Optional): 
* Priority support with faster response times 
* Access to future premium features
Soft Activation Model: 
This plugin works fully without activation. Activation only enables premium features and priority support. All PDF signature features are available to everyone. Free version updates are always available from WordPress.org.
<h3>External Services</h3>
This plugin connects to the following external third-party services. No external connections are made for core PDF signing functionality — all PDF processing happens locally on your server.
<h4>Freemius (freemius.com)</h4>
This plugin uses the Freemius SDK for license management and premium feature activation. When the plugin is activated, it connects to the Freemius API to register the site and validate license status.
<ul>
<li>What data is sent: Site URL, plugin version, WordPress version, PHP version, and admin email address (if the admin opts in to usage tracking).</li>
<li>When data is sent: On plugin activation, during periodic license validation checks, on update checks, and optionally for anonymous usage analytics (only if the admin explicitly opts in).</li>
<li>Why: To manage premium license activation, enable premium features, and provide support services.</li>
<li>Service provider: Freemius Inc.</li>
<li>Terms of Service: https://freemius.com/terms/</li>
<li>Privacy Policy: https://freemius.com/privacy/</li>
</ul>
<h4>WordPress.org API (api.wordpress.org)</h4>
This plugin connects to the WordPress.org API solely for a network connectivity diagnostic test. This is only triggered when an admin manually clicks “Run Diagnostics” on the License settings page.
<ul>
<li>What data is sent: A standard HTTP GET request with default WordPress HTTP headers (site URL, WordPress version).</li>
<li>When data is sent: Only when an administrator manually initiates a diagnostics check from the plugin License page.</li>
<li>Why: To verify the server can make outbound HTTPS connections, which is required for license validation.</li>
<li>Service provider: WordPress.org</li>
<li>Privacy Policy: https://wordpress.org/about/privacy/</li>
<li>Terms of Service: https://wordpress.org/about/</li>
</ul>
<h3>Bundled Libraries</h3>
This plugin includes the following JavaScript and PHP libraries locally (no CDN calls):
PDF.js (Mozilla) v5.4.624 
* Purpose: PDF rendering in browser 
* License: Apache-2.0 
* Source: https://github.com/mozilla/pdf.js 
* Note: Bundled locally – no external connections
Signature Pad 
* Purpose: Signature capture functionality 
* License: MIT 
* Source: https://github.com/szimek/signature_pad 
* Note: Bundled locally – no external connections
PDF-lib 
* Purpose: Client-side PDF form filling 
* License: MIT 
* Source: https://github.com/Hopding/pdf-lib 
* Note: Bundled locally – no external connections
TCPDF (tecnickcom/tcpdf) v6.11.2 
* Purpose: Server-side PDF generation for audit trail certificates 
* License: GNU-LGPLv3 
* Source: https://github.com/tecnickcom/TCPDF 
* Note: Bundled locally under a custom PHP namespace prefix (Swpdf_Vendor_) using Strauss to prevent conflicts with other plugins. Loaded only when generating audit certificates. No external connections.
FPDI (setasign/fpdi) v2.6.4 
* Purpose: PDF template importing and overlay for audit certificates 
* License: MIT 
* Source: https://github.com/Setasign/FPDI 
* Note: Bundled locally under a custom PHP namespace prefix (Swpdf\Vendor) using Strauss to prevent conflicts with other plugins. No external connections.
Freemius SDK 
* Purpose: License management and premium feature activation 
* License: GNU-GPLv3 
* Source: https://github.com/Freemius/wordpress-sdk 
* Note: Uses class_exists(‘Freemius’) check to avoid conflicts if another plugin has already loaded the SDK. See External Services section above for data transmission details.

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