webp

nginx.conf

# inside of http {}, outside of server
# may create file: /etc/nginx/conf.d/webp.conf
map $http_accept $webp_suffix {
  default "";
  "~*webp" ".webp";
}

# inside server {}
# /etc/nginx/sites.d/*.conf
location ^~ /thumbnail/ {
    expires 1y;
    add_header Pragma public;
    add_header Cache-Control "public";
    add_header X-OUPUT static;
    try_files /webp/$uri$webp_suffix $uri =404;
}

location ^~ /media/ {
    expires 1y;
    add_header Pragma public;
    add_header Cache-Control "public";
    add_header X-OUPUT static;
    try_files /webp/$uri$webp_suffix $uri =404;
}

webp-crontab.conf

# WebP
15 */1 * * * bash /home/USER/bin/webpconvertOnlyNewFiles.sh > /dev/null
30  23 * * 7 bash /home/USER/bin/webpconvertComplete.sh > /dev/null

webp.htaccess

# BOF: WEBP
AddType image/webp .webp
RewriteCond %{REQUEST_URI} (thumbnail|media)
RewriteCond %{HTTP_ACCEPT} image/webp
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_URI} \.(jpg|png)$ [NC]
RewriteCond %{DOCUMENT_ROOT}/webp%{REQUEST_URI}.webp -f
RewriteRule ^ /webp%{REQUEST_URI}.webp [L,T=image/webp]
# EOF: WEBP

webpconvert.php

<?php

$home = getenv("HOME");

$configSqlite = $home.DIRECTORY_SEPARATOR.'.config'.DIRECTORY_SEPARATOR.'loewebp'.DIRECTORY_SEPARATOR.'checksum.db';

$isNew = false;
if (!file_exists($configSqlite))
{
    $isNew = true;
    if (!is_dir(dirname($configSqlite)))
    {
        var_dump(dirname($configSqlite));
        mkdir(dirname($configSqlite), 0755, true);
    }
}
$db = new \SQLite3($configSqlite, SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE);

if ($isNew)
{
    $db->exec('CREATE TABLE checksum (filepath TEXT, filepathsum VARCHAR(255), checksum VARCHAR(255))');
}

$shortopts  = "";
$shortopts .= "f:";
$shortopts .= "o:";

$longopts  = array(
    "file:",
    "output:",
    "option",        // No value
    "opt",           // No value
);

$options = getopt($shortopts);

$file = $options['f'] ?? NULL;
$output = $options['o'] ?? NULL;

if (is_null($output))
{
    $output = $file.'.webp';
}

$file = realpath($file);
if (file_exists($output))
{
    $output = realpath($output);
}

$filenamehash = hash('sha256', $file);
$file_hash = hash_file('sha256', $file);

$exists = false;

$statement = $db->prepare('SELECT checksum, filepathsum FROM checksum WHERE filepathsum = :filepathsum LIMIT 1');
$statement->bindValue(':filepathsum', $filenamehash);
$results = $statement->execute();
while ($row = $results->fetchArray()) {
    if ($row['checksum'] === $file_hash)
    {
        $exists = true;
    }
}

if (is_string($output) && substr($output, -5) !== '.webp')
{
    $output = $output.'.webp';
}

if (!file_exists($output))
{
    $exists = false;
}

if (!$exists)
{
    if (!is_dir(dirname($output)))
    {
        mkdir(dirname($output), 0755, true);
    }
    echo "create webp bcz, does not exists\n";
    $imagick = new \Imagick($file);
    if ($imagick->getImageColorspace() != \Imagick::COLORSPACE_SRGB) {
        $imagick->transformimagecolorspace(\Imagick::COLORSPACE_SRGB);
    }
    $imagick->stripImage();
    $imagick->writeImage($output);
    $output = realpath($output);
    
    $statement = $db->prepare("DELETE FROM checksum WHERE filepathsum = :filepathsum");
    $statement->bindValue(':filepathsum', $filenamehash);
    $statement->execute();

    $statement = $db->prepare("INSERT INTO checksum (filepath, filepathsum, checksum) values (:filepath, :filepathsum, :checksum)");
    $statement->bindValue(':filepath', $file);
    $statement->bindValue(':filepathsum', $filenamehash);
    $statement->bindValue(':checksum', $file_hash);
    $statement->execute();
    echo "$file -> $output\n";
} else {
    touch($output);
    echo "already exists\n";
}

webpconvert.sh

#!/bin/bash

# File Location: /home/USER/bin/webpconvert.sh

FILEPATH=$(echo $1)

echo "$FILEPATH"
DIRNAME=$(dirname "$FILEPATH")
BASEPATH=$(basename "$FILEPATH")

NEWDIR="webp/${DIRNAME}"
echo " "
echo $DIRNAME
echo $BASEPATH

mkdir -p "webp/$DIRNAME"
echo " "

cwebp "$FILEPATH" -o "${NEWDIR}/${BASEPATH}.webp"
# alternative
# php webpconvert.php -f "$FILEPATH" -o "${NEWDIR}/${BASEPATH}.webp"

webpconvertComplete.sh

#!/bin/bash

# File Location: /home/USER/bin/webpconvertComplete.sh
# Shopware 6 Sample!

cd /home/USER/htdocs/public && find thumbnail/ -type f -iname "*.png" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find thumbnail/ -type f -iname "*.jpeg" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find thumbnail/ -type f -iname "*.jpg" -exec webpconvert.sh "{}" \;

cd /home/USER/htdocs/public && find media/ -type f -iname "*.png" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find media/ -type f -iname "*.jpeg" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find media/ -type f -iname "*.jpg" -exec webpconvert.sh "{}" \;

find /home/USER/htdocs/public/webp -type f -mtime +2 -exec rm -f "{}" \;

webpconvertOnlyNewFiles.sh

#!/bin/bash

# File Location: /home/USER/bin/webpconvertOnlyNewFiles.sh

# Shopware 6 Sample!

cd /home/USER/htdocs/public && find thumbnail/ -newermt '2 hour ago' -type f -iname "*.png" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find thumbnail/ -newermt '2 hour ago' -type f -iname "*.jpeg" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find thumbnail/ -newermt '2 hour ago' -type f -iname "*.jpg" -exec webpconvert.sh "{}" \;

cd /home/USER/htdocs/public && find media/ -newermt '2 hour ago' -type f -iname "*.png" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find media/ -newermt '2 hour ago' -type f -iname "*.jpeg" -exec webpconvert.sh "{}" \;
cd /home/USER/htdocs/public && find media/ -newermt '2 hour ago' -type f -iname "*.jpg" -exec webpconvert.sh "{}" \;