Add option to disable resaving of images on upload

[steveooo9]

Description

The issue is that some images we have to upload via the CMS backend (no manual FTP upload possible) look not as intended after the resave of an asset after upload. Some clients need perfect images as they were uploaded.

A solution would be adding an option like resaveImagesOnUpload that is set to true as default, but we would have the option to disable the resaving and preserving the real images as it was uploaded. This option should be added for Craft 2.

Additional info

• Craft version: 2

[brandonkelly]

We considered adding a sanitizeUploads config setting when we were working on #2845, but decided against it because sanitization is only one of the many reasons Craft may need to resave an image on upload. For the setting to be effective you would also need to make the following config changes:

• Set maxCachedCloudImageSize to 0 (if using a remote volume like S3)
• Set preserveCmykColorspace to true
• Set preserveExifData to true
• Ensure preserveImageColorProfiles hasn’t been set to false
• Set rotateImagesOnUploadByExifData to false

Plus you won’t be able to use the Image Editor or create image transforms, which obviously involve resaving images.

Going to leave this issue open for discussion, but as of right now we don’t know of a good way to implement this feature.

[adamseabrook]

We also have significant issues with Craft trying to clean/resave images. By default it also saves them with a lower quality I think.

It was making uploading images very slow as the team had to sit there waiting for it to finish processing an uploaded image. It was also blowing images up from 1.8mb to near 16mb somehow.

#2845 (comment) has some code that can disable the image fiddling. Matt at Servd helped us get it working and it sped up our image upload+saving step significantly. It also stopped the massive blowup in image sizes.

For Craft 3:
in /config/app.php

return [
    'modules' => [
        'my-module' => \modules\Module::class,
    ],
    'components' => [
        'images' => [
            'class' => modules\craft\Images::class,
        ],
    ],
    //'bootstrap' => ['my-module'],
];

1. In /modules create a new directory called craft
2. Create a file called Images.php
   add this into it

<?php

namespace modules\craft;

class Images extends \craft\services\Images {

    /**
     * @inheritdoc
     */
    public function cleanImage(string $filePath)
    {
        // no cleansing
    }
}

in general.php add:

		// dont try to compress images again
		'optimizeImageFilesize' => 'false',
		'defaultImageQuality' => '100',
		'maxCachedCloudImageSize' => '0',
		'preserveExifData' => 'true',
		'rotateImagesOnUploadByExifData' => 'false',
		'sanitizeSvgUploads' => 'false',
		'transformGifs' => 'false',
		'upscaleImages' => 'false',

[adamseabrook]

In addition, if there was an option to disable the image editor we would love to have it. Our images are cropped and compressed in our own editor before we upload them so we just want Craft to display the images as provided. Making sure our team cant accidentally edit them in Craft would be a great option to have.

[andris-sevcenko]

@adamseabrook

In addition, if there was an option to disable the image editor we would love to have it.

There's the Edit images permission for that.