title: How to save charts from dashboard report (JMeter)
body: <p>There is an answer how to generate JMeter report: <a href="https://stackoverflow.com/questions/38263768/how-do-i-generate-a-dashboard-report-in-jmeter">How do I generate a Dashboard Report in jmeter?</a></p>
  
  <p>And there is a question w/out accepted answer <a href="https://stackoverflow.com/questions/56188695/solution-to-save-jmeter-dashboard-reports-to-confluence">Solution to save Jmeter Dashboard reports to Confluence</a>.  </p>
  
  <p>Although ultimately I now need to put info in Confluence, I want at least to be able to copy charts/graphs one by one, but although in both Chrome and Firefox I do have context menu of saving a picture ('Save image'), however resulting image looks empty in both of browsers. How can I save chart from HTML report to image?</p>
  
  <p>Below is start of hexdump of one png file (they all come 32Kb size).</p>
  
  <pre><code>0000000 211   P   N   G  \r  \n 032  \n  \0  \0  \0  \r   I   H   D   R
  0000010  \0  \0  \b 213  \0  \0 003      \b 006  \0  \0  \0   ?   ?   p
  0000020  \n  \0  \0      \0   I   D   A   T   x   ^   ?   ?   A 001  \0
  0000030  \0  \b 002   1   ?   _   ?       7 033   0   |   ?   s 004  \b
  0000040 020       @ 200  \0 001 002 004  \b 020       @ 200  \0 001 002
  0000050 004  \b 020       @ 200  \0 001 002 004  \b 020       @ 200  \0
  0000060 001 002 031 201   e 222  \n   J 200  \0 001 002 004  \b 020    
  0000070   @ 200  \0 001 002 004  \b 020       @ 200  \0 001 002 004  \b
  0000080 020       @ 200  \0 001 002 004  \b 020       p   ?   " 236 200
  0000090  \0 001 002 004  \b 020       @ 200  \0 001 002 004  \b 020 
  </code></pre>