domclic

<p>Effortless QR Code Generator is a WordPress plugin that allows you to create QR codes using a simple shortcode. It supports both client-side JavaScript rendering and server-side PHP rendering.</p>
<h4>Features</h4>
<ul>
<li><strong>Simple shortcode</strong>: Use <code>[effortless_qrcode url="https://example.com"]</code> to generate QR codes</li>
<li><strong>Dual rendering modes</strong>: Client-side (JavaScript) or server-side (PHP/PNG)</li>
<li><strong>Developer API</strong>: Generate QR codes programmatically from your plugins/themes</li>
<li><strong>Customizable size</strong>: Control QR code dimensions (100-500 pixels)</li>
<li><strong>Custom colors</strong>: Set dark and light colors for the QR code</li>
<li><strong>Error correction levels</strong>: Choose L, M, Q, or H</li>
<li><strong>Cached PNG images</strong>: Server-rendered QR codes are cached in the uploads folder</li>
<li><strong>Responsive design</strong>: QR codes adapt to different screen sizes</li>
<li><strong>No external dependencies</strong>: All code is bundled locally</li>
<li><strong>Privacy-friendly</strong>: No data sent to external services</li>
<li><strong>Accessibility ready</strong>: Proper alt text support</li>
<li><strong>Performance optimized</strong>: Scripts load only when needed</li>
</ul>
<h4>Shortcode Parameters</h4>
<ul>
<li><code>url</code> – The URL to encode (required)</li>
<li><code>size</code> – Size in pixels (default: 150, min: 100, max: 500)</li>
<li><code>color_dark</code> – Dark color in hex format (default: #000000)</li>
<li><code>color_light</code> – Light color in hex format (default: #ffffff)</li>
<li><code>render</code> – Rendering mode: “client” or “server” (default: client)</li>
<li><code>ecc</code> – Error correction level: L, M, Q, H (default: M)</li>
<li><code>alt</code> – Alt text for accessibility (server rendering only)</li>
<li><code>class</code> – Additional CSS class (server rendering only)</li>
<li><code>data</code> – Arbitrary data to encode (plain text, WiFi, vCard, etc.). When set, overrides <code>url</code> and disables <code>link</code></li>
<li><code>link</code> – Wrap QR code in a clickable link: “yes” or “no” (default: no). Only works with URL content, ignored when <code>data</code> is used</li>
<li><code>title</code> – Tooltip text shown on hover</li>
<li><code>target</code> – Link target attribute: “_blank”, “_self”, etc. (default: _blank)</li>
</ul>
<h4>Usage Examples</h4>
<p>Basic usage (client-side):<br />
    [effortless_qrcode url=”https://example.com”]</p>
<p>Server-side rendering:<br />
    [effortless_qrcode url=”https://example.com” render=”server”]</p>
<p>With custom size and colors:<br />
    [effortless_qrcode url=”https://example.com” size=”200″ color_dark=”#0073aa”]</p>
<p>Server-side with high error correction:<br />
    [effortless_qrcode url=”https://example.com” render=”server” ecc=”H” alt=”Scan me”]</p>
<h4>PHP API for Developers</h4>
<p>Third-party plugins and themes can generate QR codes programmatically using the <code>Effortless_QRCode_Native</code> class.</p>
<p><strong>Basic Usage:</strong></p>
<pre><code><?php
// Make sure the plugin is active
if ( class_exists( 'Effortless_QRCode_Native' ) ) {

    // Generate a QR code PNG
    $result = Effortless_QRCode_Native::generate_png( 'https://example.com' );

    if ( $result ) {
        echo '<img src="' . esc_url( $result['url'] ) . '" alt="QR Code">';
    }
}
?>
</code></pre>
<p><strong>With Custom Options:</strong></p>
<pre><code><?php
$result = Effortless_QRCode_Native::generate_png(
    'https://example.com',  // Data to encode (required)
    200,                    // Size in pixels (default: 150)
    '#0073aa',              // Dark color (default: #000000)
    '#ffffff',              // Light color (default: #ffffff)
    'H',                    // ECC level: L, M, Q, H (default: M)
    4                       // Margin in modules (default: 4)
);

if ( $result ) {
    // $result['url']  - Public URL to the PNG image
    // $result['path'] - Server filesystem path to the PNG file
    // $result['debug'] - Debug information string
}
?>
</code></pre>
<p><strong>Display in a Template:</strong></p>
<pre><code><?php
if ( class_exists( 'Effortless_QRCode_Native' ) ) {
    $result = Effortless_QRCode_Native::generate_png( get_permalink() );

    if ( $result ) : ?>
        <div class="my-qr-code">
            <img src="<?php echo esc_url( $result['url'] ); ?>"
                 alt="<?php esc_attr_e( 'Scan to visit this page', 'my-theme' ); ?>"
                 width="150"
                 height="150">
        </div>
    <?php endif;
}
?>
</code></pre>
<h4>API Reference</h4>
<p><strong>Effortless_QRCode_Native::generate_png( $data, $size, $color_dark, $color_light, $ecc, $margin )</strong></p>
<p>Generates a QR code PNG image and saves it to the WordPress uploads folder.</p>
<p><strong>Parameters:</strong></p>
<ul>
<li><code>$data</code> (string) – Required. The data to encode (URL, text, etc.)</li>
<li><code>$size</code> (int) – Optional. Image size in pixels. Default: 150</li>
<li><code>$color_dark</code> (string) – Optional. Hex color for dark modules. Default: ‘#000000’</li>
<li><code>$color_light</code> (string) – Optional. Hex color for light modules. Default: ‘#ffffff’</li>
<li><code>$ecc</code> (string) – Optional. Error correction level (L, M, Q, H). Default: ‘M’</li>
<li><code>$margin</code> (int) – Optional. Quiet zone margin in modules. Default: 4</li>
</ul>
<p><strong>Returns:</strong></p>
<p>Array on success with keys:<br />
* <code>url</code> – Public URL to the generated PNG image<br />
* <code>path</code> – Server filesystem path to the PNG file<br />
* <code>debug</code> – Debug information string</p>
<p>Returns <code>false</code> on failure.</p>
<p><strong>Notes:</strong></p>
<ul>
<li>Images are cached based on all parameters (same input = same file)</li>
<li>Files are stored in <code>wp-content/uploads/effortless-qrcodes/</code></li>
<li>Requires GD library for PNG generation</li>
</ul>
<h4>Error Correction Levels</h4>
<ul>
<li><strong>L</strong> – 7% recovery capacity (smallest QR code)</li>
<li><strong>M</strong> – 15% recovery capacity (default, good balance)</li>
<li><strong>Q</strong> – 25% recovery capacity</li>
<li><strong>H</strong> – 30% recovery capacity (largest QR code, best for print)</li>
</ul>
<p>Higher error correction allows the QR code to be read even if partially damaged or obscured.</p>
<h4>Privacy</h4>
<p>This plugin does not collect, store, or transmit any personal data. QR codes are generated locally (either in the browser or on your server).</p>
<h4>Requirements</h4>
<ul>
<li><strong>PHP 7.4+</strong> with GD library (for server-side PNG generation)</li>
<li><strong>WordPress 5.0+</strong></li>
<li><strong>JavaScript enabled</strong> (for client-side rendering only)</li>
</ul>


EffortLess QR Code Generator

Generate QR codes easily with a simple shortcode. Supports client-side (JavaScript) and server-side (PHP/PNG) rendering with a developer API.

Dhanendran Rajagopal

<p>A WordPress plugin which will help you to create QR Codes.</p>
<h3>Terms of use</h3>
<p>This plugin is using 3rd party service (<a href="http://goqr.me/api/" rel="nofollow ugc">goqr.me</a>) to create QR codes. As per it’s <a href="http://goqr.me/api/doc/create-qr-code/#general_tos" rel="nofollow ugc">terms of service</a>, it won’t store your data at any give poit.</p>


QR Code Creator

A WordPress plugin which will help you to create QR Codes.

EffortLess QR Code Generator vs QR Code Creator