Intervention Image - how to upload images with MIME type: application/octet-stream

Question

Im using Laravel framework with Intervention Image library to upload and process images on my page. Everything works fine until I try to update .jpg images taken from mobile devices or from cameras. These images have MIME type application/octet-stream instead of image/jpeg. When I try to upload image with this command:

Image::make($thumb)->resize($this->twidth, $this->theight)->save($this->destination."/".$filename);

I get error:

Unable to read image from file

One uncomfortable solution is open that images in MS Paint and resave them, which will change MIME type to 'image/jpeg' and make it possible to upload it. But I would like to evade this solution at all cost.

EDIT:

I was trying to fix it by this command:

$img = imagecreatefromstring($thumb);

but it returns error: imagecreatefromstring(): Empty string or invalid image

Is there a way how to handle this type of images?

Answer 1

Check upload_max_filesize in php.ini. It was reason in my case.

Answer 2

Well, In such a case you can remove Laravel validation rule mimes, and instead, you can validate the image by its extension using PHP.

Your validation rule will look like this.

$request->validate([
    'image' => 'required',
]);

Validating image using file extension will look like this

if (! in_array($request->file('image')->clientExtension(), ['jpg', 'jpeg', 'png'])) {
   // not a valid image
}