I'm trying to restrict the weight of the uploaded file in admin, I found the 'maxFileSize' in Magento documentation but it's not working :

    'name' => 'file',
    'label' => __('File'),
    'title' => __('File'),
    'maxFileSize' => 2097152,
    'required' => false,
    'note' => 'File size must be less than 2 Mb.'

Thanks !


1 Answer 1


I think I would use php.ini instead.

To ensure that file uploads work correctly, the post_max_size directive should be a little larger than the upload_max_filesize. For example, the following settings demonstrate how to set a file upload limit to 20 megabytes:

upload_max_filesize = 20M
post_max_size = 21M
  • 1
    Thanks for your answer but by doing this I will limit all files fields and I just want to custom the max size for this specific field.
    – magentodev
    Oct 24, 2018 at 20:10
  • Ahhhh, well that's a horse of a different color for sure!
    – dawhoo
    Oct 24, 2018 at 22:23

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