imagor for Craft

Hands Craft's image transforms to imagor (libvips). imagor fetches the original itself, so the site's server never downloads, decodes or resizes it. In testing, a 24MP original cost Imagick about 370MB and 4.8s across five sizes; imagor took 77MB and 1.9s, on its own server.

Craft's transform index, file paths, storage and URLs don't change, and neither do templates. Pair it with Blitz's page generation so transforms are made in the background.

Install

composer require borders-dev/craft-imagor
php craft plugin/install imagor

IMAGOR_ENABLED=true
IMAGOR_URL=https://imagor.example.com
IMAGOR_SECRET=…   # same as the imagor server

It's opt-in: unless IMAGOR_ENABLED=true and IMAGOR_URL is set, the plugin does nothing and Craft transforms as usual.

Fallback

Craft makes the file itself when imagor fails on an image. If imagor is unreachable (connection fails within 3s, or 502/503/504), Craft handles everything for 5 minutes before trying imagor again.

Options: config/imagor.php (optional)

return [
    'source' => 'url',        // imagor fetches the original's public URL (no keys on imagor)
    // 'source' => 's3', 'bucket' => '$AWS_BUCKET',  // or its S3 loader
    'signer' => 'sha1',       // match IMAGOR_SIGNER_TYPE
    'connectTimeout' => 3,
    'timeout' => 60,
    'downSeconds' => 300,
];

Originals are requested as …/file.jpg?v=<asset modified time>, so a file replaced under the same name is never resized from imagor's cached copy.

imagor server

imagor/docker-compose.yml runs one imagor for every site (e.g. a Ploi Docker app proxied to 127.0.0.1:8000). It keeps fetched originals for an hour and serves only signed URLs.