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8. Google Visualizations > Limitations

Limitations

There are a few limitations to Google Chart Tools, mostly involving image charts, and you should consider them if you intend to be adventurous with the API:

  • Image charts are limited to a maximum pixel area of 300,000 pixels, with the longest edge being no longer than 1,000 pixels. In real terms, this is plenty for a reasonably large chart.

  • The maximum URL size for image charts is 2 KB using GET, and 16 KB using POST. There are no such limitations for interactive charts, which connect to the Google chart servers with AJAX.

  • The maximum number of chart requests is 250,000 per day. If you require more than this amount, you will need to contact Google. If you’re using mostly unchanging image charts, one workaround is to simply take a copy of the generated image chart and save it on your own web servers as an image instead of constantly requesting the chart from Google.


  

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