opentype.js是TrueType 和 OpenType 字體的javascript讀寫器。它可以讓你從瀏覽器或node.js中獲取文字的字母形式。

以下是一個示例。加載一個文字，然后將其展示在一個id="canvas"的畫布上Canvas。

opentype.load('fonts/Roboto-Black.ttf', function (err, font) {
    if (err) {
         alert('Font could not be loaded: ' + err);
    } else {
        var ctx = document.getElementById('canvas').getContext('2d');
        // Construct a Path object containing the letter shapes of the given text.
        // The other parameters are x, y and fontSize.
        // Note that y is the position of the baseline.
        var path = font.getPath('Hello, World!', 0, 150, 72);
        // If you just want to draw the text you can also use font.draw(ctx, text, x, y, fontSize).
        path.draw(ctx);
    }
}

在線示例請查看： the project website

特性

• Create a bézier path out of a piece of text.
• Support for composite glyphs (accented letters).
• Support for OpenType (glyf) and PostScript (cff) shapes.
• Support for kerning (Using GPOS or the kern table).
• Very efficient.
• Runs in the browser and node.js.

項目主頁：http://www.baiduhome.net/lib/view/home/1420682212953