Books Stacked Upright clipart

Transform books stacked upright clipart to base64 encoded string and get best solution for embed into your application
iVBORw0KGgoAAAANSUhEUgAAAJYAAACwCAYAAADt9JfJAAAA...
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Images will be optimize via Jpegoptim or OptiPNG.
(Often images contains some metadata witch can to remove for decrease size)