在PDF中生成最小QRCode的方法是什么？
我读到Form XObject可以帮助添加一个图像，并在不同位置的pdf上多次显示。因此，考虑到这一点，如何可能绘制一个黑色正方形并正确定位它。
我找不到能做这件事的人。
这里是一个最小的例子，因为单像素最好设置为单色，但三色RGB在基本PDF中要容易得多
并不是像
，可在此处找到https://github.com/GitHubRulesOK/MyNotes/blob/master/demo.pdf
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但是一个较小的独立文件更适合作为邮票模板，所以你可以根据需要更改图案或颜色，然后在各处盖章。
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as single dots it can be scaled to any size without increasing number of bytes, and generally more efficient than any SVG variant.
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