signwpdf

<p>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.</p>
<p><strong>Core Features:</strong><br />
* Upload fillable PDF templates<br />
* Collect digital signatures via web forms<br />
* Store signed agreements securely in WordPress<br />
* Email notifications for completed documents<br />
* PDF generation with TCPDF library<br />
* Audit trail and certificate generation<br />
* Template management system<br />
* Shortcode integration for forms<br />
* Gutenberg block support<br />
* AJAX-powered signature collection</p>
<p><strong>Premium Features (Optional):</strong><br />
* Priority support with faster response times<br />
* Access to future premium features</p>
<p><strong>Soft Activation Model:</strong><br />
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.</p>
<h3>External Services</h3>
<p>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.</p>
<h4>Freemius (freemius.com)</h4>
<p>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.</p>
<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>
<p>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.</p>
<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>
<p>This plugin includes the following JavaScript and PHP libraries locally (no CDN calls):</p>
<p><strong>PDF.js (Mozilla) v5.4.624</strong><br />
* Purpose: PDF rendering in browser<br />
* License: Apache-2.0<br />
* Source: https://github.com/mozilla/pdf.js<br />
* Note: Bundled locally – no external connections</p>
<p><strong>Signature Pad</strong><br />
* Purpose: Signature capture functionality<br />
* License: MIT<br />
* Source: https://github.com/szimek/signature_pad<br />
* Note: Bundled locally – no external connections</p>
<p><strong>PDF-lib</strong><br />
* Purpose: Client-side PDF form filling<br />
* License: MIT<br />
* Source: https://github.com/Hopding/pdf-lib<br />
* Note: Bundled locally – no external connections</p>
<p><strong>TCPDF (tecnickcom/tcpdf) v6.11.2</strong><br />
* Purpose: Server-side PDF generation for audit trail certificates<br />
* License: GNU-LGPLv3<br />
* Source: https://github.com/tecnickcom/TCPDF<br />
* 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.</p>
<p><strong>FPDI (setasign/fpdi) v2.6.4</strong><br />
* Purpose: PDF template importing and overlay for audit certificates<br />
* License: MIT<br />
* Source: https://github.com/Setasign/FPDI<br />
* Note: Bundled locally under a custom PHP namespace prefix (Swpdf\Vendor) using Strauss to prevent conflicts with other plugins. No external connections.</p>
<p><strong>Freemius SDK</strong><br />
* Purpose: License management and premium feature activation<br />
* License: GNU-GPLv3<br />
* Source: https://github.com/Freemius/wordpress-sdk<br />
* 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.</p>


signwpdf PDF Sign & Fill

Professional PDF signature collection plugin. Upload fillable PDFs, collect signatures, and store signed documents securely.

wpesigngenie

<p>Foxit eSign for WP allows you a seamless workflow to connect your wp form with Foxit eSign application to sign and send the document instantly.</p>
<h3>Features:</h3>
<ol>
<li>Fully compatible with WordPress</li>
<li>Easy and fast way connect your WPForm for eSignature</li>
<li>Add and map custom fields from your WPForm to Foxit eSign Form</li>
<li>Sign documents online or insert e-signature fields to your forms.</li>
<li>Secured and authorized access use for signing</li>
</ol>
<h3>Foxit eSign API</h3>
<p>Foxit eSign is an OAuth2 provider. Security implementation is based on the final version of OAuth 2.0 Authorization framework.<br />
Every API request requires access_token as part of the authentication header.</p>
<h3>This is a three step process:</h3>
<h3>1.   Authentication Process (Developer)</h3>
<h3>a. Obtain an API key</h3>
<p>You can obtain the Foxit eSign API key provided as client_id in the API section under the account settings.</p>
<h3>b. Authorize a User</h3>
<p>The user is redirected to Foxit eSign consent screen from where an auth_code is generated.</p>
<h3>c. Create an Access Token</h3>
<p>The auth_code obtained is required to generate the access_token.</p>
<h3>d. Optionally, refresh Access Token</h3>
<p>Access_token eventually expires thus store the refresh_token returned when creating an access token. Returns a new access_token.</p>
<h3>2. Getting client_id,client_secret and Apis Base url, we are using https://www.esigngenie.com/wp-plugin-auth.php Api.</h3>
<h3>3. Developer to Authorize a 3rd Party User (via Developer Application User Interface) your application exchanges the client_id for an auth_code by an HTML “consent” screen.</h3>
<p>Send the authenticating user from your application to Foxit eSign OAuth2 request URL. We recommend a button or a link titled “Connect to Foxit eSign”.</p>


Foxit eSign for WordPress

Foxit eSign for WP allows you a seamless workflow to connect your wp form with Foxit eSign application to sign and send the document instantly.

signwpdf PDF Sign & Fill vs Foxit eSign for WordPress