Yes, shouldn't be an issue. However, you can check image meta data through http://metapicz.com.
I am not sure you can batch these up.
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Yes, shouldn't be an issue. However, you can check image meta data through http://metapicz.com.
I am not sure you can batch these up.
No evidence on this.
As long as the text and background isn't the same color you are safe. Also, the more contrast the better for usability sake.