Simple PHP script to convert jpeg / gif / png to webp

readme.md

Introduction

Using PHP GD library to covert common type images to webp format.

Guide

Download script:

sudo wget https://gist.githubusercontent.com/johnroyer/85d0631d175b85a7befa3714855f4ab9/raw/3d70527b4c66279eaa97d997f84f1e42a51ccf18/webp.php -O /bin/webp
sudo chmod +x /bin/webp

Usage:

webp image.png NEW_NAME.webp

webp

#!/usr/bin/env php
<?php

$inputFile = $argv[1];
$outputFile = $argv[2];

// check file type
$mime = [
    'image/bmp' => 'imagecreatefrombmp',
    'image/gif' => 'imagecreatefromgif',
    'image/jpeg' => 'imagecreatefromjpeg',
    'image/png' => 'imagecreatefrompng',
];
$type = mime_content_type($inputFile);
if (!array_key_exists($type, $mime)) {
    echo "un-recognized type: {$type}\n";
    exit(255);
}

$img = $mime[$type]($inputFile);

// output webp
imagewebp($img, $outputFile);

imagedestroy($img);