Consolidate font files with IE support

Question

I now have quite a few fonts that I need to use for my site:

fonts/
├── Knockout-30.otf
├── Verlag-Black.otf
├── Verlag-Bold.otf
├── Verlag-Book.otf
├── Verlag-Light.otf
├── VerlagCond-Black.otf
└── VerlagCond-Bold.otf

Right now mine csslooks like this:

@font-face {
  font-family: 'Knockout';
  src: url('fonts/Knockout-30.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'Verlag';
  src: url('fonts/Verlag-Book.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'Verlag';
  src: url('fonts/Verlag-Bold.otf') format('opentype');
  font-weight: bold;
  font-style: normal;
}
@font-face {
  font-family: 'Verlag';
  src: url('fonts/Verlag-Light.otf') format('opentype');
  font-weight: lighter;
  font-style: normal;
}
@font-face {
  font-family: 'VerlagBlack';
  src: url('fonts/Verlag-Black.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'VerlagCond';
  src: url('fonts/VerlagCond-Black.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'VerlagCond';
  src: url('fonts/VerlagCond-Bold.otf') format('opentype');
  font-weight: bold;
  font-style: normal;
}

IE, https://onlinefontconverter.com/ , IE. , , 7 . , - ? , , ? base64 css, , base64 , , , . , .

Answer 1

, @font-face

@font-face {
  font-family: "Roboto";
  font-style: italic;
  font-weight: 100;
  src: local("Roboto Thin Italic"), local("Roboto-ThinItalic"),
       url(../fonts/Roboto/Roboto-ThinItalic.woff2) format("woff2"), 
       url(../fonts/Roboto/Roboto-ThinItalic.woff) format("woff"), 
       url(../fonts/Roboto/Roboto-ThinItalic.ttf) format("truetype"), 
       url(../fonts/Roboto/Roboto-ThinItalic.eot), 
       url(../fonts/Roboto/Roboto-ThinItalic.eot?#iefix) format("embedded-opentype"),
       url(../fonts/Roboto/Roboto-ThinItalic.svg#Roboto) format("svg");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215, U+E0FF, U+EFFD, U+F000;
}

@font-face {
  font-family: "Roboto";
  font-style: normal;
  font-weight: 100;
  src: local("Roboto Thin"), local("Roboto-Thin"), 
       url(../fonts/Roboto/Roboto-Thin.woff2) format("woff2"), 
       url(../fonts/Roboto/Roboto-Thin.woff) format("woff"), 
       url(../fonts/Roboto/Roboto-Thin.ttf) format("truetype"), 
       url(../fonts/Roboto/Roboto-Thin.eot),
       url(../fonts/Roboto/Roboto-Thin.eot?#iefix) format("embedded-opentype"),
       url(../fonts/Roboto/Roboto-Thin.svg#Roboto) format("svg");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215, U+E0FF, U+EFFD, U+F000;
}
...

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@font-face {
  font-family: "Roboto";
  font-style: normal;
  font-weight: normal;
  src: local("Roboto"),
       url(../fonts/Roboto/Roboto.woff2) format("woff2"), 
       url(../fonts/Roboto/Roboto.woff) format("woff"), 
       url(../fonts/Roboto/Roboto.ttf) format("truetype"), 
       url(../fonts/Roboto/Roboto.eot), 
       url(../fonts/Roboto/Roboto.eot?#iefix) format("embedded-opentype"),
       url(../fonts/Roboto/Roboto.svg#Roboto) format("svg");
}

, : https://www.w3.org/TR/2009/WD-css3-fonts-20090618/