title: How to change encoding of all files at once with Jetbrains IDE like WebStorm
body: <p>For some unknown reason, the encoding of my files has changed without me noticing for a while.</p>
  
  <p>It was <code>UTF-8</code> and now is <code>windows-1252</code>. I have reset the project encoding from <code>Settings-&gt;File encoding</code> but I can't detect which files are badly encoded and can't figure out how to reencode all files within the project at once.</p>
  
  <p>I have a strong feeling that the problem appeared with WebStorm 10 first released version, but I may be wrong. (I think it's because it set by default the <code>project encoding</code> setting to <code>windows-1252</code>)</p>