MDL2 Icons
Example of select-all at 6x   Example of select-all at 5x    Example of select-all at 4x    Example of select-all at 3x    Example of select-all at 2x   Example of select-all

mdl2-select-all · Unicode: \ue8b3 · Categories: AppBar glyphs

After you get up and running, you can place MDL2 icons just about anywhere with the <i> tag:

Example of select-all mdl2-select-all 
<i class="mdl2 mdl2-select-all" aria-hidden="true"></i>

Note: to improve web accessibility, we recommend using aria-hidden="true" to hide icons used purely for decoration.