Cordova camera getPicture is lossless compressing even when quality is 100

Question

Hello friends In my project, I'm able to capture the image via camera or gallery the size of the Image file vary to 5-6 MB based on the quality of camera or user selected image.Then I have to upload it on server.

The requirement is, before upload the file on remote server, I want to apply lossless compression on image to reduce the file size to 2-3MB so it will save internet cost of user & and my server space as well.

without using resize image. how can I do this?.

I have the user upload a Image. This is my code.

$scope.addImage = function (source) {
            $rootScope.ionPopup.close();
            var src = Camera.PictureSourceType.CAMERA
            if (source == 'PHOTOLIBRARY')
                src = Camera.PictureSourceType.PHOTOLIBRARY
            var options = {
                quality: 100,
                destinationType: Camera.DestinationType.DATA_URL,
                sourceType: src,
                allowEdit: false,
                encodingType: Camera.EncodingType.JPEG,
                targetWidth: 350,
                targetHeight: 350,
                //popoverOptions: CameraPopoverOptions,
                saveToPhotoAlbum: true,
                correctOrientation: true
            };
            $cordovaCamera.getPicture(options).then(function (imageData) {
                uploadImage(imageData);

            }, function (err) {
                // error
            });
        };
        var uploadImage = function (imageData) {
            $scope.orderImages.push(imageData);
            $scope.orderImagesList.push({ImageString: imageData});
        };

imageData is the base64 encoded image.

How can I compress that base64 encoded image ?

can someone help me !

score 3 · Accepted Answer · answered May 23 '17 at 21:44

The targetHeight, and targetWidth options should change the resulting file size. I recently used:

quality: 90, 
targetWidth: 900,
targetHeight: 900,

to get a huge 10MB image file to scale down to about 200KB. Keep in mind that:

Photos selected from the device's gallery are not downscaled to a lower quality, even if a quality parameter is specified.

Source: https://cordova.apache.org/docs/en/latest/reference/cordova-plugin-camera/index.html

Cordova camera getPicture is lossless compressing even when quality is 100

1 Answers1