tesseract.js/index.html

<canvas id="c"></canvas>
<script type="text/javascript" src="./build/tesseract.js"></script>
<script type="text/javascript">
	var canvas = document.getElementById('c')
	canvas.width = 400
	canvas.height = 400
	var ctx = canvas.getContext('2d');
	ctx.font = '30px "Arial Black"'
	ctx.fillText('Hell0 World', 100, 40)
	// ctx.fillText("囚犯離奇掙脫囚犯離奇掙脫", 100, 40)
	ctx.font = '30px "Times New Roman"'
	ctx.fillText('from beyond', 100, 80)
	// ctx.fillText('2小時可換乘2次2小時可換乘2次', 100, 80)
	ctx.font = '30px sans-serif'
	ctx.fillText('the Cosmic Void', 100, 120)

	var tesseract = Tesseract();

	tesseract.recognize(canvas, {
		tessedit_char_blacklist: 'e'
	})
	.progress(function(e){
		console.log('progress', e)
	})
	.then(function(e){
		console.log('result', e)
	})

</script>