diff --git a/CHECK.html b/CHECK.html
index be88a210..4b27c3b9 100644
--- a/CHECK.html
+++ b/CHECK.html
@@ -396,6 +396,7 @@
 <tr><td>Yammer</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yammer.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yammer.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/yammer.svg" width="100"></td><td><a href="https://yammerassets.blob.core.windows.net/assets/sites/12/2014/07/Yammer_BrandIdentityGuidelines-1.pdf">https://yammerassets.blob.core.windows.net/assets/sites/12/2014/07/Yammer_BrandIdentityGuidelines-1.pdf</a></td></tr>
 <tr><td>Yarn</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yarn.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yarn.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/yarn.svg" width="100"></td><td><a href="https://yarnpkg.com/en/">https://yarnpkg.com/en/</a></td></tr>
 <tr><td>Yelp</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yelp.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yelp.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/yelp.png" width="100"></td><td><a href="https://www.yelp.co.uk/brand">https://www.yelp.co.uk/brand</a></td></tr>
+<tr><td>Yii</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yii.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yii.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/yii.svg" width="100"></td><td><a href="https://www.yiiframework.com/logo">https://www.yiiframework.com/logo</a></td></tr>
 <tr><td>YouTube</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/youtube.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/youtube.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/youtube.svg" width="100"></td><td><a href="https://www.youtube.com/intl/en/yt/about/brand-resources/#logos-icons-colors">https://www.youtube.com/intl/en/yt/about/brand-resources/#logos-icons-colors</a></td></tr>
 <tr><td>Yubico</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yubico.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/yubico.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/yubico.png" width="100"></td><td><a href="https://github.com/Yubico/yubikey-manager-qt/blob/master/resources/icons/ykman.png">https://github.com/Yubico/yubikey-manager-qt/blob/master/resources/icons/ykman.png</a></td></tr>
 <tr><td>Zoom</td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/zoom.svg" width="100" /></td><td><img src="https://edent.github.io/SuperTinyIcons/images/svg/zoom.svg" width="100" style="border-radius: 50%;"></td><td><img src="https://edent.github.io/SuperTinyIcons/images/reference/zoom.png" width="100"></td><td><a href="https://www.zoom.us/">https://www.zoom.us/</a></td></tr>
diff --git a/README.md b/README.md
index b2d1094b..9e76da4d 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 378 icons and the average size is _under_ 520 bytes!
+Under 1KB each! Super Tiny Web Icons are minuscule SVG versions of your favourite logos. There are currently 378 icons and the average size is _under_ 521 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.
 
@@ -578,6 +578,7 @@ Say thanks!
 <tr>
 <td>Yarn<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yarn.svg" width="100" title="Yarn"><br>497 bytes</td>
 <td>Yelp<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yelp.svg" width="100" title="Yelp"><br>448 bytes</td>
+<td>Yii<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yii.svg" width="100" title="Yii"><br>763 bytes</td>
 <td>YouTube<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/youtube.svg" width="100" title="YouTube"><br>333 bytes</td>
 <td>Yubico<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yubico.svg" width="100" title="Yubico"><br>250 bytes</td>
 <td>Zoom<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/zoom.svg" width="100" title="Zoom"><br>515 bytes</td>
@@ -767,6 +768,7 @@ The majority of these vector logos are based on someone else's work.
 - [Threema.](https://threema.ch/de/press)
 - [CoreUI](https://github.com/coreui/coreui-icons) - CC-BY
 - [NixOS](https://github.com/NixOS/nixos-artwork) - CC-BY
+- [Yii PHP Framework](https://www.yiiframework.com/logo) - CC BY-ND 3.0
 
 From [SVGporn](https://github.com/gilbarbara/logos/) - CC0
 
diff --git a/REFERENCE.md b/REFERENCE.md
index 72b869fd..078b713c 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -376,6 +376,7 @@ Yahoo! | <img src="https://edent.github.io/SuperTinyIcons/images/svg/yahoo.svg"
 Yammer | <img src="https://edent.github.io/SuperTinyIcons/images/svg/yammer.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/yammer.svg" width="256"> | https://yammerassets.blob.core.windows.net/assets/sites/12/2014/07/Yammer_BrandIdentityGuidelines-1.pdf
 Yarn | <img src="https://edent.github.io/SuperTinyIcons/images/svg/yarn.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/yarn.svg" width="256"> | https://yarnpkg.com/en/
 Yelp | <img src="https://edent.github.io/SuperTinyIcons/images/svg/yelp.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/yelp.png" width="256"> | https://www.yelp.co.uk/brand
+Yii | <img src="https://edent.github.io/SuperTinyIcons/images/svg/yii.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/yii.svg" width="256"> | https://www.yiiframework.com/logo
 YouTube | <img src="https://edent.github.io/SuperTinyIcons/images/svg/youtube.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/youtube.svg" width="256"> | https://www.youtube.com/intl/en/yt/about/brand-resources/#logos-icons-colors
 Yubico | <img src="https://edent.github.io/SuperTinyIcons/images/svg/yubico.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/yubico.png" width="256"> | https://github.com/Yubico/yubikey-manager-qt/blob/master/resources/icons/ykman.png
 Zoom | <img src="https://edent.github.io/SuperTinyIcons/images/svg/zoom.svg" width="256" /> | <img src="https://edent.github.io/SuperTinyIcons/images/reference/zoom.png" width="256"> | https://www.zoom.us/
diff --git a/images/android-vector-drawable/yii.xml b/images/android-vector-drawable/yii.xml
new file mode 100644
index 00000000..a35905f8
--- /dev/null
+++ b/images/android-vector-drawable/yii.xml
@@ -0,0 +1,21 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+    <path
+        android:pathData="m0,0H512V512H0"
+        android:fillColor="#fff"/>
+    <path
+        android:fillColor="#40B3D8"
+        android:pathData="M310.4 311.4c-2.5-32.7-13-53.9-18.1-65.9-5.2-12-13-23.2-13-23.2s-7.1 38.3-19.9 65.9c-2.1 4.6-5 10.4-7.8 15-8.8 15.5-21.5 30.4-29.1 45.4-7.6 15-9 29.7-8.3 46.5 0.7 16.9 4.6 33.5 8.4 49.9 14.1-3 26.4-8.3 37-15a109 109 0 0 0 49.7-75.8s0.3-1.2 0.4 -2.7c2.1-23.4 1.4-30.7 0.7 -40.1" />
+    <path
+        android:fillColor="#83C933"
+        android:pathData="M310.4 311.4c-2.5-32.7-13-53.9-18.1-65.9-5.2-12-13-23.2-13-23.2l-2-2.8c-41.2-57.9-120.3-86.8-187.2-60-3.2 40.6 15.6 110.5 84.3 130 27.7 8.5 50 6.3 77.2 13.7s27.7 9.7 43.8 24.1c7.3 6.5 14.5 15.1 14.2 25.3 2.3-24.3 1.5-31.7 0.8 -41.2" />
+    <path
+        android:fillColor="#F18A2A"
+        android:pathData="M280.4 188.3c-9.7-28.5-5.6-47.6 12.3-74.3a140 140 0 0 1 36-35.7c52 32.5 71.3 93.2 52.1 149.6-13.9 41-27 58.2-60 100.4 3.9-45.2-12-76.5-27.6-111.3-4-9-9.5-19-12.8-28.7" />
+    <path
+        android:fillColor="#7FB93C"
+        android:pathData="M309.6 352.6c0.3-10.2-7-18.8-14.2-25.3-16-14.5-43.8-24.1-43.8-24.1 2.9-4.6 5.7-10.4 7.8-15 12.8-27.6 19.8-65.8 19.8-65.9 0 0 8 11.2 13 23.2 5.2 12 15.7 33.2 18.2 65.9 0.7 9.5 1.5 17-0.8 41.2" />
+</vector>
diff --git a/images/reference/Java.svg b/images/reference/Java.svg
deleted file mode 100755
index 0f8b8db8..00000000
--- a/images/reference/Java.svg
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- Generator: Adobe Illustrator 13.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 14948)  -->
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 width="233.549683248" height="428.174419289" viewBox="0 0 300 550" style="enable-background:new 0 0 300 550;" xml:space="preserve">
-<path style="fill:#5382A1;" d="M285.104,430.945h-2.038v-1.14h5.486v1.14h-2.024v5.688h-1.424V430.945z M296.046,431.242h-0.032
-	l-2.019,5.392h-0.924l-2.006-5.392h-0.025v5.392h-1.342v-6.828h1.975l1.86,4.835l1.854-4.835h1.968v6.828h-1.31V431.242z"/>
-<path style="fill:#5382A1;" d="M102.681,291.324c0,0-14.178,8.245,10.09,11.035c29.4,3.354,44.426,2.873,76.825-3.259
-	c0,0,8.518,5.341,20.414,9.967C137.38,340.195,45.634,307.264,102.681,291.324"/>
-<path style="fill:#5382A1;" d="M93.806,250.704c0,0-15.902,11.771,8.384,14.283c31.406,3.24,56.208,3.505,99.125-4.759
-	c0,0,5.936,6.018,15.27,9.309C128.771,295.215,30.962,271.562,93.806,250.704"/>
-<path style="fill:#F8981D;" d="M168.625,181.799c17.896,20.604-4.702,39.145-4.702,39.145s45.441-23.458,24.572-52.833
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-<path style="fill:#5382A1;" d="M264.684,321.369c0,0,10.492,8.645-11.555,15.333c-41.923,12.7-174.488,16.535-211.314,0.506
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-	C181.236,373.524,303.095,338.695,264.684,321.369"/>
-<path style="fill:#5382A1;" d="M109.499,208.617c0,0-67.431,16.016-23.879,21.832c18.389,2.462,55.047,1.905,89.193-0.956
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-	C83.313,206.851,109.499,208.617,109.499,208.617"/>
-<path style="fill:#5382A1;" d="M230.462,276.231c69.608-36.171,37.424-70.931,14.96-66.248c-5.506,1.146-7.961,2.139-7.961,2.139
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-<path style="fill:#F8981D;" d="M188.495,4.399c0,0,38.55,38.563-36.563,97.862c-60.233,47.568-13.735,74.69-0.025,105.678
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-<path style="fill:#5382A1;" d="M116.339,374.246c66.815,4.277,169.417-2.373,171.847-33.988c0,0-4.671,11.985-55.219,21.503
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-<path style="fill:#5382A1;" d="M105.389,495.048c-6.303,5.467-12.96,8.536-18.934,8.536c-8.527,0-13.134-5.113-13.134-13.314
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-	l1.361,9.22H122.781z"/>
-<path style="fill:#5382A1;" d="M180.825,514.671h-21.692l-26.106-84.96h18.943l16.199,52.2l3.601,15.699
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-<path style="fill:#5382A1;" d="M264.038,495.048c-6.315,5.467-12.984,8.536-18.958,8.536c-8.512,0-13.131-5.113-13.131-13.314
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-<path style="fill:#5382A1;" d="M36.847,529.099c-4.958,7.239-12.966,12.966-21.733,16.206l-8.587-10.105
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-</svg>
diff --git a/images/reference/yii.svg b/images/reference/yii.svg
new file mode 100644
index 00000000..801b604d
--- /dev/null
+++ b/images/reference/yii.svg
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generator: Adobe Illustrator 25.2.3, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns:serif="http://www.serif.com/" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 650.832 800" style="enable-background:new 0 0 650.832 800;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#40B3D8;}
+	.st1{fill:#83C933;}
+	.st2{fill-rule:evenodd;clip-rule:evenodd;fill:#F18A2A;}
+	.st3{fill:#7FB93C;}
+</style>
+<g id="Слой-1" serif:id="–°–ї–Њ–є 1">
+	<g>
+		<path class="st0" d="M481.395,508.535c-5.4-71.26-28.382-117.45-39.574-143.628c-11.187-26.174-28.387-50.675-28.398-50.637    c-0.033,0.112-15.486,83.388-43.271,143.639c-4.638,10.064-10.797,22.626-17.013,32.744l0.002,0.001    c-19.183,33.866-47.013,66.265-63.604,99.105c-16.449,32.546-19.501,64.78-17.97,101.427    c1.543,36.85,10.054,72.992,18.227,108.816c30.81-6.647,57.628-18.023,80.825-32.563c61.05-38.274,97.939-99.492,108.423-165.444    c0,0,0.511-2.678,0.738-5.945C484.509,545.078,482.945,528.996,481.395,508.535z"/>
+		<path class="st1" d="M481.395,508.535c-5.4-71.26-28.382-117.45-39.574-143.628c-11.187-26.174-28.387-50.675-28.398-50.637    c0,0-0.004,0.017-0.004,0.018c0.001-0.011,0.004-0.023,0.004-0.023l-4.106-6.105c-90.029-126.38-262.69-189.479-408.57-130.996    c-7.024,88.584,34.046,241.004,183.875,283.517c60.572,18.634,109.076,13.803,168.521,29.966    c-0.003,0.002-0.003,0.004-0.005,0.005c0,0,60.424,21.058,95.576,52.638c15.813,14.202,31.646,32.891,30.851,55.121    C484.574,545.505,482.97,529.32,481.395,508.535z"/>
+		<g transform="matrix(1,0,0,1,233.564,496.875)">
+			<path class="st2" d="M182.406-256.769c-21.289-62.282-12.267-104.016,26.679-162.096c18.575-27.711,50.648-59.854,78.756-78.01     C401.25-425.808,443.183-293.436,401.476-170.5c-30.354,89.45-58.833,126.955-130.84,218.99     c8.393-98.569-26.297-166.901-60.359-242.831C201.61-213.659,189.622-235.652,182.406-256.769"/>
+		</g>
+		<g transform="matrix(1,0,0,1,245.403,498.558)">
+			<path class="st3" d="M234.164,99.853c0.795-22.23-15.038-40.919-30.852-55.121c-35.152-31.579-95.574-52.637-95.574-52.637     c6.217-10.118,12.375-22.681,17.012-32.745c27.786-60.252,43.239-143.526,43.272-143.639c0.011-0.038,17.21,24.464,28.398,50.637     c11.193,26.179,34.175,72.368,39.574,143.628C237.567,30.761,239.171,46.947,234.164,99.853z"/>
+		</g>
+	</g>
+</g>
+</svg>
\ No newline at end of file
diff --git a/images/reference/yii.url b/images/reference/yii.url
new file mode 100644
index 00000000..ec72d762
--- /dev/null
+++ b/images/reference/yii.url
@@ -0,0 +1 @@
+https://www.yiiframework.com/logo
diff --git a/images/svg/yii.svg b/images/svg/yii.svg
new file mode 100644
index 00000000..02d5c495
--- /dev/null
+++ b/images/svg/yii.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Yii" role="img"
+viewBox="0 0 512 512"><path
+d="m0 0H512V512H0"
+fill="#fff"/><path fill="#40B3D8" d="M310 311c-2-32-13-54-18-66s-13-23-13-23-7 39-20 66l-7 15c-9 16-22 31-30 46-7 15-9 29-8 46s5 34 9 50c14-3 26-8 37-15a109 109 0 0 0 49-76s1-1 1-3c2-23 1-30 0-40"/><path fill="#83C933" d="M310 311c-2-32-13-54-18-66s-13-23-13-23l-2-3c-41-57-120-86-187-60-3 41 16 111 84 130 28 9 50 7 78 14s27 10 43 24c8 7 15 15 15 26 2-25 1-32 0-42"/><path fill="#F18A2A" d="M280 188c-9-28-5-47 13-74a140 140 0 0 1 36-36c52 33 71 94 52 150-14 41-27 58-60 100 4-45-12-76-28-111l-13-29"/><path fill="#7FB93C" d="M310 353c0-11-7-19-15-26-16-14-43-24-43-24 3-4 5-10 7-15 13-27 20-66 20-66s8 11 13 23 16 34 18 66c1 10 2 17 0 42"/></svg>
\ No newline at end of file