通过 Python脚本，实现字体文件otf，ttf文件大小的减少

news2024/11/23 9:21:49

FontTools 是一个用于操作字体文件的 Python 库。它支持多种字体格式，包括 TrueType (TTF) 和 OpenType (OTF)，并提供功能来编辑、合并、子集化和生成字体文件

前提：安装了 Python

1、安装 fonttools 库

pip3 install fonttools

2、编写脚本

from fontTools import subset

# 定义输入字体文件和输出字体文件的路径
input_font_path = "DIN-Bold.otf"
output_font_path = "DIN-Bold-subset.otf"

# 定义需要保留的字符
text = "1479"

# 创建一个 Subsetter 对象
options = subset.Options()
subsetter = subset.Subsetter(options=options)

# 加载字体
font = subset.load_font(input_font_path, options)

# 将字符加入到要保留的字符集中
subsetter.populate(text=text)

# 执行子集化
subsetter.subset(font)

# 保存子集化后的字体
subset.save_font(font, output_font_path, options)

print(f"Subset font saved to {output_font_path}")

3、执行脚本

python subset_font.py

在这里插入图片描述
4、文件大小对比，由29kb减少到4kb

5、验证代码

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Font Display</title>
    <style>
        @font-face {
            font-family: 'DIN-Bold';
            src: url('DIN-Bold.otf') format('opentype');
        }

        @font-face {
            font-family: 'DIN-Bold-Subset';
            src: url('DIN-Bold-subset.otf') format('opentype');
        }

        .din-bold {
            font-family: 'DIN-Bold';
            font-size: 50px;
        }

        .din-bold-subset {
            font-family: 'DIN-Bold-Subset';
            font-size: 50px;
        }

        .container {
            display: flex;
            gap: 20px;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="din-bold">5</div>
        <div class="din-bold-subset">5</div>

        <div class="din-bold">4</div>
        <div class="din-bold-subset">4</div>

        <div class="din-bold">9</div>
        <div class="din-bold-subset">9</div>

        <div class="din-bold">7</div>
        <div class="din-bold-subset">7</div>

        <div class="din-bold">1</div>
        <div class="din-bold-subset">1</div>
    </div>
</body>

</html>