Issue with automatic generation of 1.5MB images and thumbnails

andreslopez

I am writing to report an issue we are experiencing in the Dédalo application related to the generation of derived images.
To create the records, we usually upload the original images using the "Add images" option within the "Images" menu. This first step works correctly: we upload the original image and then the thumbnails and the 1.5 MB images are generated automatically.

The problem occurs when we edit those images and upload them again through the same section, this time as modified images. In this case, the 1.5 MB images and the thumbnails are not generated automatically.
If we go to the "Media versions" section of each image, we are able to generate them manually, but we have to do it one by one, which is very time‑consuming.

Could you please check this behavior and let us know if it is a configuration issue on our side or a bug in the application?

Regards

Alex

I tested the situation and is working.
Can you provide the OS, PHP versions and the imageMagick version that you are running?
And the PHP error log...

Could be possible that a specific imageMagick version is not working properly.

Best

Alex

Hi Again

Could you please explain how you configured the image constants in the config.php file?

DEDALO_IMAGE_EXTENSIONS_SUPPORTED
DEDALO_IMAGE_ALTERNATIVE_EXTENSIONS
DEDALO_IMAGE_QUALITY_ORIGINAL
DEDALO_IMAGE_AR_QUALITY
MAGICK_CONFIG

I need replicate your configuration for test it.

Best

andreslopez

Hello Alex,
Here is the information you requested:

=== OS ===
PRETTY_NAME="Ubuntu 24.04.3 LTS"

=== PHP CLI ===
PHP 8.4.17 (cli) (built: Jan 18 2026 14:19:44) (NTS)

=== CONSTANTS ===
define('DEDALO_IMAGE_EXTENSIONS_SUPPORTED', ['jpg','jpeg','png','tif','tiff','bmp','psd','raw','webp','heic','avif','svg']);
define('DEDALO_IMAGE_ALTERNATIVE_EXTENSIONS', []);
define('DEDALO_IMAGE_QUALITY_ORIGINAL','original');
define('DEDALO_IMAGE_QUALITY_RETOUCHED', 'modified');
define('DEDALO_IMAGE_QUALITY_DEFAULT', '1.5MB');
define('DEDALO_IMAGE_AR_QUALITY', [DEDALO_IMAGE_QUALITY_ORIGINAL,DEDALO_IMAGE_QUALITY_RETOUCHED,'25MB','6MB','1.5MB',DEDALO_QUALITY_THUMB]);

define('MAGICK_CONFIG', [
'remove_layer_0' => false,
'is_opaque' => null
]);

Thank you very much for your help.
Best regards,

Alex

Can you check this?

Add a 'png' in DEDALO_IMAGE_ALTERNATIVE_EXTENSIONS as:

define('DEDALO_IMAGE_ALTERNATIVE_EXTENSIONS', ['png']);

Test it and said me if it works.

Best

andreslopez

Thank you very much for the guidance provided. With your instructions, I was able to resolve the case successfully.

Regards