ImageField::new('image')
             ->setBasePath('uploads/post-images')
             ->setUploadDir('public/uploads/post-images')
             ->setUploadedFileNamePattern('[slug]-[timestamp].[extension]')
            ->setFormTypeOption(
                'constraints',
                [
                    new \App\Validator\Constraints\EasyAdminFile([
                        'mimeTypes' => [ // We want to let upload only jpeg or png
                            'image/jpeg',
                            'image/png',
                        ],
                    ])
                ]
            );

<?php

namespace App\Validator\Constraints;

/**
 * @Annotation
 * @Target({"PROPERTY", "METHOD", "ANNOTATION"})
 *
 * @property int $maxSize
 */
#[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
class EasyAdminFile extends \Symfony\Component\Validator\Constraints\File
{
}

<?php

namespace App\Validator\Constraints;

use EasyCorp\Bundle\EasyAdminBundle\Form\Type\Model\FileUploadState;
use Symfony\Component\Form\Form;
use Symfony\Component\Form\FormBuilder;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;

/**
 * This constraint is created for adding validation support to the easyAdmin field type "ImageField".
 * The Symfony constraint file validation is expecting an object of type "UploadedFile" or "FileObject" for
 * handling the validation but EasyAdmin only returned the filename.
 * Therefore, we have to load the object first before calling the symfony file validator.
 * Created for versions:
 * symfony: 6.1
 * easycorp/easyadmin-bundle: 4.3.2
 *
 * Class EasyAdminFileValidator
 * @package App\Validator\Constraints
 */
class EasyAdminFileValidator extends \Symfony\Component\Validator\Constraints\FileValidator
{
    /**
     * @param mixed $value
     * @param \Symfony\Component\Validator\Constraint $constraint
     * @return void
     */
    public function validate(mixed $value, Constraint $constraint)
    {
        if (!$constraint instanceof EasyAdminFile) {
            throw new UnexpectedTypeException($constraint, EasyAdminFile::class);
        }

        if ($value !== null &&
            $this->context->getObject() instanceof Form &&
            $this->context->getObject()->getConfig() instanceof FormBuilder
        ) {
            $config = $this->context->getObject()->getConfig();

            /** @var FileUploadState $state */
            $state = $config->getAttribute('state');

            if (!$state instanceof FileUploadState ||
                !$state->isModified()
            ) {
                return;
            }

            // On the upload field we can set the option for multiple uploads, so we need to take care of this
            foreach ($state->getUploadedFiles() as $index => $file) {
                parent::validate($file, $constraint);
            }
        }
    }
}

<?php


namespace App\Validator;


use Symfony\Component\Validator\Constraints\Image;

/**
 * @Annotation
 *
 * @Target({"PROPERTY", "METHOD", "ANNOTATION"})
 */
#[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
class EasyadminImage extends Image
{

}

<?php


namespace App\Validator;


use Symfony\Component\HttpFoundation\File\UploadedFile;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Constraints\ImageValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;

class EasyadminImageValidator extends ImageValidator
{
   public function validate($value, Constraint $constraint)
   {
       if (!$constraint instanceof EasyadminImage) {
           throw new UnexpectedTypeException($constraint, EasyadminImage::class);
       }
       if ($value instanceof UploadedFile)
           parent::validate($value, $constraint);
   }

}

ImageField::new('image', 'Icon')
                    ->setColumns(4)
                    ->setUploadDir('public' . DIRECTORY_SEPARATOR . 'uploaded' . DIRECTORY_SEPARATOR . 'images')
                    ->setBasePath('uploaded' . DIRECTORY_SEPARATOR . 'images')
                    ->setUploadedFileNamePattern('[slug]-[contenthash].[extension]')
                    ->setHelp('Image .png, .jpg et jpeg uniquement au format 100 x 100 px')
                    ->setFormTypeOption('constraints', [new EasyadminImage(null, null, null, ['image/png', 'image/jpg', 'image/jpeg'],
                        100, 300, 100, 300, 1, 1)])