Loading image with glide is slow

I used dontTransform() method and it almost saved me a second. Images are loaded to the list really first.

Just add this when you get image from URL, this code reduces the size of that image

you can also do this,

ByteArrayOutputStream bytes = new ByteArrayOutputStream();

    //save scaled down image to cache dir
    newBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes);

    File imageFile = new File(filePath);

    // write the bytes in file
    FileOutputStream fo = new FileOutputStream(imageFile);
    fo.write(bytes.toByteArray());

check this example