diff --git a/README.md b/README.md
index cebf5f21..d498833e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Super Tiny Icons
 
-Under 1KB each! Super Tiny Web Icons are minuscule SVG versions of your favourite logos. There are currently 372 icons and the average size is _under_ 515 bytes!
+Under 1KB each! Super Tiny Web Icons are minuscule SVG versions of your favourite logos. There are currently 372 icons and the average size is _under_ 516 bytes!
 
 The logos have a 512x512 viewbox, they will fit in a circle with radius 256. They will scale up and down to suit your needs.
 
@@ -559,7 +559,7 @@ Say thanks!
 
 <tr>
 <td>X<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/x.svg" width="100" title="X"><br>287 bytes</td>
-<td>X11<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/x11.svg" width="100" title="X11"><br>261 bytes</td>
+<td>X11<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/x11.svg" width="100" title="X11"><br>756 bytes</td>
 <td>XING<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/xing.svg" width="100" title="XING"><br>347 bytes</td>
 <td>XMPP<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/xmpp.svg" width="100" title="XMPP"><br>726 bytes</td>
 <td>Yahoo!<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yahoo.svg" width="100" title="Yahoo!"><br>280 bytes</td>
diff --git a/images/reference/index.md b/images/reference/index.md
index cb9218fe..20c5e0d3 100644
--- a/images/reference/index.md
+++ b/images/reference/index.md
@@ -343,3 +343,5 @@ Super&nbsp;Tiny&nbsp;SVG | &nbsp;&nbsp;Official&nbsp;Logo&nbsp;&nbsp; | Source
 <img src="/images/svg/h-entry.svg" width="256" /> | <img src="/images/reference/h-entry.svg" width="256" /> | https://indieweb.org/IndieWebCamp:Copyrights
 <img src="/images/svg/h-card.svg" width="256" /> | <img src="/images/reference/h-card.svg" width="256" /> | https://indieweb.org/IndieWebCamp:Copyrights
 <img src="/images/svg/h-feed.svg" width="256" /> | <img src="/images/reference/h-feed.svg" width="256" /> | https://indieweb.org/IndieWebCamp:Copyrights
+<img src="/images/svg/netbsd.svg" width="256" /> | <img src="/images/reference/netbsd.png" width="256" /> | https://www.netbsd.org/gallery/logos.html
+<img src="/images/svg/x11.svg" width="256" /> | <img src="/images/reference/x11.png" width="256" /> | https://www.netbsd.org/gallery/logos.html
diff --git a/images/reference/netbsd.png b/images/reference/netbsd.png
new file mode 100644
index 00000000..e31c3d00
Binary files /dev/null and b/images/reference/netbsd.png differ
diff --git a/images/reference/x11.png b/images/reference/x11.png
new file mode 100644
index 00000000..948cb77e
Binary files /dev/null and b/images/reference/x11.png differ
diff --git a/images/svg/x11.svg b/images/svg/x11.svg
index d8c95936..a26d60c5 100644
--- a/images/svg/x11.svg
+++ b/images/svg/x11.svg
@@ -1,4 +1,5 @@
 <svg xmlns="http://www.w3.org/2000/svg"
 aria-label="X11" role="img"
 viewBox="0 0 512 512"><path
-d="m0 0H512V512H0" fill="#fff"/><path d="M120 393S224 260 224 260 121 119 121 119h67s83 114 83 114L144 393ZM241 280 367 120h25L288 251S392 393 392 393H325Z"/></svg>
+d="m0 0H512V512H0"
+fill="#fff"/><defs><linearGradient id="a" x1="319.2" x2="657.7" y1="235.1" y2="269.5" gradientTransform="translate(-248 9) scale(1.0368)" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#e54c18"/><stop offset="1" stop-color="#fec350"/></linearGradient></defs><path d="m106 414 116-150L103 98h76l95 130-142 186Zm226 0-94-130L380 98h26L290 249l118 165z"/><path fill="url(#a)" d="M351 175c56 22 93 62 93 108 0 69-84 125-188 125S68 352 68 283c0-44 35-83 87-106l10 16c-33 20-54 50-54 84 0 61 71 111 159 111s159-50 159-111c0-42-33-78-82-97l4-5Zm-95-17c24 0 47 3 68 8l-4 5c-16-3-33-5-50-5-1 0-12-2-18 7s12 26 20 45l-44-58 28-2Z"/></svg>
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