使用python把字体按照unicode-range切片成web字体woff或woff2

安装依赖
pip install fonttools brotli
python源码
from fontTools import ttLib
from fontTools.subset import main as subset_main
import os
import math
import random
import string

# ===================== 配置 =====================
SOURCE_FONT = "你的字体.TTF"  # 改成你的字体文件名
OUTPUT_DIR = "dist_woff" #字体切片存放的文件夹
FONT_FAMILY = "fzxbs" #font-famliy
OUTPUT_FORMAT = "woff" #需要的格式woff或者woff2
# =================================================

os.makedirs(OUTPUT_DIR, exist_ok=True)

# 加载字体
tt = ttLib.TTFont(SOURCE_FONT)
cmap = tt.getBestCmap()
all_chars = sorted(cmap.keys())
tt.close()

# 分片计算
total_glyphs = len(all_chars)
glyphs_per_chunk = 150
chunk_count = math.ceil(total_glyphs / glyphs_per_chunk)

chunks = []
for i in range(chunk_count):
    start = i * glyphs_per_chunk
    end = start + glyphs_per_chunk
    chunk = all_chars[start:end]
    if chunk:
        chunks.append(chunk)

css_lines = []

# 生成 6位随机字母+数字
def random_str(length=6):
    return ''.join(random.choices(string.ascii_lowercase + string.digits, k=length))

# 批量切片
for idx, chunk in enumerate(chunks):
    # 生成随机串 + 序号
    rand = random_str()
    #chunk_name = f"chunk_{rand}_{idx+1:02d}"
    chunk_name = f"{idx+1:02d}"
    
    font_out = os.path.join(OUTPUT_DIR, f"{FONT_FAMILY}_{chunk_name}.{OUTPUT_FORMAT}")
    unicodes = ",".join(f"U+{c:04X}" for c in chunk)

    args = [
        SOURCE_FONT,
        f"--unicodes={unicodes}",
        f"--output-file={font_out}",
        f"--flavor={OUTPUT_FORMAT}",
        "--layout-features=*",
        "--no-hinting",
    ]
    subset_main(args)

    # 生成CSS
    min_c = min(chunk)
    max_c = max(chunk)
    urange = f"U+{min_c:04X}-{max_c:04X}"

    css = f'''
@font-face {{
  font-family: '{FONT_FAMILY}';
  src: url('{os.path.basename(font_out)}') format('{OUTPUT_FORMAT}');
  unicode-range: {urange};
}}
'''
    css_lines.append(css.strip())
    print(f"✅ 生成：{font_out}")

# 保存CSS
with open(os.path.join(OUTPUT_DIR, "fonts.css"), "w", encoding="utf-8") as f:
    f.write("\n\n".join(css_lines))

print("\n🎉 全部完成！")
print(f"📁 输出目录：{OUTPUT_DIR}")

当面目录cmd执行py 你的python文件名，享用~