René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Using fonttype 42 will make the produced PDF size considerably larger when the image has Chinese characters","articleBody":"# Description\r\nI want to produce a pdf format image to include in my LaTeX document. The image contains some Chinese characters. I have found that using Chinese characters with fonttype 42 will produce pdf files with greater file size.\r\n\r\nThe code to reproduce is \r\n\r\n```python\r\nimport matplotlib.font_manager as mfm\r\nimport matplotlib.pyplot as plt\r\nimport matplotlib as mpl\r\n\r\nfont_path = \"C:/Windows/fonts/simhei.ttf\"\r\nprop = mfm.FontProperties(fname=font_path)\r\nmpl.rcParams['pdf.fonttype'] = 42\r\n\r\nch = False\r\nfig, ax = plt.subplots()\r\n\r\nif ch:\r\n\tax.text(0.5, 0.5, \"你好\", transform=ax.transAxes, fontproperties=prop,\r\n\t\tfontsize=30)\r\nelse:\r\n\tax.text(0.5, 0.5, \"hello\", transform=ax.transAxes, fontsize=30)\r\n\r\nplt.savefig(\"mpl_use_ch.pdf\", bbox_inches='tight')\r\nplt.show()\r\n```\r\nIf I set `ch=True`, the size of produced pdf is **5327k**. Otherwise, the size of produced pdf is **374k**.\r\n\r\nWhen I comment out the line `mpl.rcParams['pdf.fonttype'] = 42`, then the produced pdf size is more or less the same no matter I use `ch=True` or `ch=False`.\r\n\r\nIs this the expected behaviour? Why does using fonttype 42 make the produce pdf size so large?\r\n\r\n# Versions\r\n\r\n  * Operating system: Windows 10\r\n  * Matplotlib version: 2.1.2\r\n  * Python version: 3.6.4\r\n\r\nThe matplotlib package is installed using conda.\r\n\r\n","author":{"url":"https://github.com/jdhao","@type":"Person","name":"jdhao"},"datePublished":"2018-05-24T10:29:26.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":15},"url":"https://github.com/11303/matplotlib/issues/11303"}