CJK font rendering
Fix Chinese garbled text in pdf-lib
Load a lightweight Chinese TTF from Cloudflare, embed it with fontkit, and generate a PDF that displays Chinese correctly in any reader.
CJK font embedding test
Load a Cloudflare-hosted TTF font, convert it to Uint8Array, register fontkit, embed it with pdf-lib, then write Chinese text into a test PDF.
建议上传 1–2MB 的子集化字体，例如只包含常用中文、数字和标点的思源黑体 TTF。字体文件需要允许 CORS，并返回 font/ttf、application/octet-stream 或可识别的 .ttf URL。
Font bytes are fetched by the browser and embedded locally into the output PDF.