WebP Enforcer WordPress Plugin

Enforces WebP conversion best practices by requiring confirmation before image uploads

Features

• ✅ Mandatory confirmation before uploading non-WebP images
• 🚫 Blocks upload if WebP conversion isn't confirmed
• 🖼️ Special SVG handling (bypasses confirmation)
• 🎨 Customizable modal dialog with WordPress styling
• 📱 Fully responsive design

Installation

1. Download the plugin ZIP
2. Go to WordPress Admin → Plugins → Add New → Upload
3. Upload and activate

How It Works

// Core functionality in webp-enforcer.php
add_filter('wp_handle_upload_prefilter', 'enforce_webp_format');
add_filter('upload_mimes', 'enable_svg_uploads');

function enforce_webp_format($file) {
    $extension = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));
    $image_extensions = ['jpg', 'jpeg', 'png', 'gif'];
    if (in_array($extension, $image_extensions)) {
        $file['error'] = __('Please convert to WebP first', 'webp-enforcer');
    }
    return $file;
}

Supported Format

1. JPG/JPEG, PNG, GIF requires confirmation
2. WebP, SVG/SVGZ don't require confirmation

Customisation

Edit these variables in webp-enforcer.php

// Change modal text
const ALERT_MESSAGE = "Has this image been converted to WebP?";
const CONFIRM_TEXT = "Yes, proceed with upload";
const CANCEL_TEXT = "No, cancel upload";

Development

Clone repository

git clone https://github.com/lazyZ33/webp-enforcer.git cd webp-enforcer

Contributing

1. Create a feature branch
2. Make your changes
3. Submit a pull request