title: How can I get the size of the embedded fonts?
body: <p>I have a private PDF document which has about 0.6MB, but when I watermark it with PyPDF2 it grows to 12 MB (the watermarking document is &lt; 0.4MB). I think that this is related to compression, but I don't understand how.</p>
  <p>It especially confuses me why the original PDF is so huge (uncompressed).:</p>
  <ul>
  <li>No images</li>
  <li>No embedded files</li>
  <li>Just 15 pages and the extracted text has 1467 characters</li>
  </ul>
  <p>I was thinking that it might be embedded fonts:</p>
  <pre><code>$ pdffonts example.pdf 
  name                                 type              encoding         emb sub uni object ID
  ------------------------------------ ----------------- ---------------- --- --- --- ---------
  AAAAAB+ArialMT                       CID TrueType      Identity-H       yes yes yes      8  0
  AAAAAC+OpenSans-Regular              TrueType          MacRoman         yes yes no      13  0
  AAAAAD+MyriadPro-Regular             Type 1C           MacRoman         yes yes no      14  0
  AAAAAE+MyriadPro-Regular             Type 1C           MacRoman         yes yes no      15  0
  AAAAAF+OpenSans-Regular              TrueType          MacRoman         yes yes no      16  0
  AAAAAG+OpenSans-Regular              TrueType          MacRoman         yes yes no      17  0
  AAAAAH+OpenSans-Regular              TrueType          MacRoman         yes yes no      18  0
  AAAAAI+OpenSans-Bold                 TrueType          MacRoman         yes yes no      19  0
  AAAAAJ+OpenSans-Regular              TrueType          MacRoman         yes yes no      20  0
  AAAAAK+OpenSans-Italic               TrueType          MacRoman         yes yes no      21  0
  AAAAAL+OpenSans-Regular              TrueType          MacRoman         yes yes no      31  0
  AAAAAM+OpenSans-Regular              TrueType          MacRoman         yes yes no      35  0
  AAAAAN+MyriadPro-Regular             Type 1C           MacRoman         yes yes no      36  0
  AAAAAO+MyriadPro-Regular             Type 1C           MacRoman         yes yes no      37  0
  AAAAAP+OpenSans-Regular              TrueType          MacRoman         yes yes no      38  0
  AAAAAQ+OpenSans-Regular              TrueType          MacRoman         yes yes no      39  0
  AAAAAR+OpenSans-Regular              TrueType          MacRoman         yes yes no      40  0
  AAAAAS+OpenSans-Bold                 TrueType          MacRoman         yes yes no      41  0
  AAAAAT+OpenSans-Regular              TrueType          MacRoman         yes yes no      42  0
  AAAAAU+Arial-BoldMT                  CID TrueType      Identity-H       yes yes yes     53  0
  AAAAAV+ArialMT                       CID TrueType      Identity-H       yes yes yes     54  0
  AAAAAW+Arial-ItalicMT                CID TrueType      Identity-H       yes yes yes     60  0
  </code></pre>
  <p>How can I check the (uncompressed) size of the embedded fonts?</p>