README

A pure PHP package for converting images to WebP format. This package provides a simple and efficient way to convert JPEG, PNG, GIF, and BMP images to WebP format using PHP's GD extension.

Features

• Convert JPEG, PNG, GIF, and BMP images to WebP
• Configurable quality settings (0-100)
• Lossless conversion mode
• Metadata preservation (when possible)
• Comprehensive error handling
• PSR-4 autoloading
• PHP 8.3+ compatible

Installation

Install via Composer:

composer require sabioweb/php-cwebp-package

Requirements

• PHP 8.3 or higher
• GD extension enabled

Quick Start

<?php

use Sabioweb\WebPConverter\SBWebPConverter;
use Sabioweb\WebPConverter\SBConversionOptions;

require 'vendor/autoload.php';

// Create converter instance
$converter = new SBWebPConverter();

// Convert image with default settings
$converter->convert('input.jpg', 'output.webp');

// Convert with custom quality
$options = SBConversionOptions::create()
    ->setQuality(85);

$converter->convert('input.png', 'output.webp', $options);

// Convert with lossless mode
$options = SBConversionOptions::create()
    ->setLossless(true);

$converter->convert('input.png', 'output.webp', $options);

Usage

Basic Conversion

use Sabioweb\WebPConverter\WebPConverter;

$converter = new SBWebPConverter();
$converter->convert('path/to/image.jpg', 'path/to/output.webp');

Advanced Options

use Sabioweb\WebPConverter\SBWebPConverter;
use Sabioweb\WebPConverter\SBConversionOptions;

$converter = new SBWebPConverter();

$options = SBConversionOptions::create()
    ->setQuality(90)
    ->setLossless(false)
    ->preserveMetadata(true);

$converter->convert('input.png', 'output.webp', $options);

Error Handling

use Sabioweb\WebPConverter\SBWebPConverter;
use Sabioweb\WebPConverter\Exceptions\SBInvalidImageException;
use Sabioweb\WebPConverter\Exceptions\SBConversionFailedException;
use Sabioweb\WebPConverter\Exceptions\SBFileNotFoundException;

try {
    $converter = new SBWebPConverter();
    $converter->convert('input.jpg', 'output.webp');
} catch (SBFileNotFoundException $e) {
    echo "File not found: " . $e->getMessage();
} catch (SBInvalidImageException $e) {
    echo "Invalid image: " . $e->getMessage();
} catch (SBConversionFailedException $e) {
    echo "Conversion failed: " . $e->getMessage();
}

API Reference

SBWebPConverter

Main converter class.

Methods

• convert(string $inputPath, string $outputPath, ?ConversionOptions $options = null): void
  • Converts an image file to WebP format
  • Parameters:
    • $inputPath: Path to input image file
    • $outputPath: Path to output WebP file
    • $options: Optional conversion options

SBConversionOptions

Configuration options for image conversion.

Methods

• create(): self - Creates a new instance
• setQuality(int $quality): self - Sets quality (0-100, default: 80)
• setLossless(bool $lossless): self - Enables/disables lossless mode
• preserveMetadata(bool $preserve): self - Preserves metadata when possible
• getQuality(): int - Gets current quality setting
• isLossless(): bool - Checks if lossless mode is enabled
• shouldPreserveMetadata(): bool - Checks if metadata preservation is enabled

Supported Formats

• Input: JPEG, PNG, GIF, BMP
• Output: WebP

License

MIT License. See LICENSE file for details.

Documentation

For Persian documentation, see README.fa.md.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.