Is it possible to save picture to firebase storage with original quality?

Ionic Framework ionic-v3
1

Hello
I get image using image picker plugin, then I saved it to firebase storage.
but when I save image of 1.8Mb but stored image is about 700kb…
is it possible to keep file quality?

code to get image is

getPhoto(){
    console.log("get photo come ");
    
  const options = {
  maximumImagesCount: 100,
  
  width: 1000,
  height: 1000,
  quality:100,
  outputType:1
  
  // quality of resized image, defaults to 100
};
setTimeout(()=>{
  this.ip.getPictures(options).then((results) => {
    
    console.log(results);
    for (var i = 0; i < results.length; i++) {
        console.log('Image URI: ' + results[i]);
       
    }
    this.viewCtrl.dismiss({"flag":"multi","data":results});
  }, (err) => { console.log(err)});
 
},1000)
  
  }

code to save to firebase storage is

console.log("retrieved image is : ");
      if(imagedata!=undefined){
        console.log(imagedata);
        if(imagedata.flag=="multi"){
          console.log(imagedata.data);
          this.totalnum=imagedata.data.length;
        if(imagedata.data!=undefined){
          for(var i=0; i<imagedata.data.length; i++){
            console.log("uploading........"+i);
            this.picdata=imagedata.data[i];
            this.uploadImageToFirebase(imagedata.data[i],i);
          }
         
        }
      }
    
    }

uploadImageToFirebase(image,index){
    console.log("upload iamge to firebase");
    console.log(image);
    this.uploadImage(image,index)
  }

uploadImage(imageURI,index){
      let storageRef = firebase.storage().ref();
      var result="design"+(index+1);

      console.log(imageURI);
      imageURI=  "data:image/jpeg;base64," + imageURI;

      console.log("sssssssssss : "+result);
      console.log(imageURI);
          var a = this.mypicref.child(this.key).child(result)
      this.encodeImageUri(imageURI, (image64)=>{
        console.log("image64 converted done");

       
        a.putString(image64, 'data_url',{contentType:'image/jpeg'})
        .then(snapshot => {
          this.mypicref.child(this.key).child(result).getDownloadURL().then((url)=>{
         ....
        ....