diff --git a/README.md b/README.md
index bfa50009..61b67164 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ Originally created for my contact page - [https://edent.tel/](https://edent.tel/
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/rss.svg" width="125" title="RSS" /><br>305 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/mail.svg" width="125" title="mail" /><br>573 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/email.svg" width="125" title="email" /><br>379 Bytes</td>
-<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/mastodon.svg" width="125" title="Mastodon" /><br>567 Bytes</td>
+<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/mastodon.svg" width="125" title="Mastodon" /><br>664 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/wire.svg" width="125" title="Wire" /><br>286 Bytes</td>
 </tr>
 <tr>
diff --git a/images/reference/index.md b/images/reference/index.md
index c4dfb35d..58141d60 100644
--- a/images/reference/index.md
+++ b/images/reference/index.md
@@ -34,10 +34,10 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/google_plus.svg" width="256" />	| <img src="/images/reference/google_plus.png" width="256" />	| https://plus.google.com/+googleplus	|
 | <img src="/images/svg/wechat.svg" width="256" />	| <img src="/images/reference/wechat.svg" width="256" />	| https://wechat.design/?locale=en_US	|
 | <img src="/images/svg/youtube.svg" width="256" />	| <img src="/images/reference/youtube.svg" width="256" />	| https://www.youtube.com/intl/en/yt/about/brand-resources/#logos-icons-colors	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/pdf.svg" width="256" />	| <img src="/images/reference/pdf.svg" width="256" />	| https://www.adobe.com/content/dam/acom/en/legal/documents/Adobe_Trademark_Guidelines_11012014.pdf	|
+| <img src="/images/svg/vk.svg" width="256" />	| <img src="/images/reference/vk.png" width="256" />	| https://vk.com/public47200950	|
+| <img src="/images/svg/rss.svg" width="256" />	| <img src="/images/reference/rss.svg" width="256" />	| http://www.feedicons.com/	|
+| <img src="/images/svg/mastodon.svg" width="256" />	| <img src="/images/reference/mastodon.svg" width="256" />	| https://github.com/tootsuite/joinmastodon/blob/master/public/press-kit.zip	|
 | <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
 | <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
 | <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
diff --git a/images/reference/mastodon.svg b/images/reference/mastodon.svg
new file mode 100644
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--- /dev/null
+++ b/images/reference/mastodon.svg
@@ -0,0 +1 @@
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diff --git a/images/reference/pdf.svg b/images/reference/pdf.svg
new file mode 100644
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diff --git a/images/reference/rss.svg b/images/reference/rss.svg
new file mode 100755
index 00000000..b3251494
--- /dev/null
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@@ -0,0 +1,18 @@
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+<defs>
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+<rect width="236" height="236" rx="47" ry="47" x="10" y="10" fill="url(#RSSg)"/>
+<circle cx="68" cy="189" r="24" fill="#FFF"/>
+<path d="M160 213h-34a82 82 0 0 0 -82 -82v-34a116 116 0 0 1 116 116z" fill="#FFF"/>
+<path d="M184 213A140 140 0 0 0 44 73 V 38a175 175 0 0 1 175 175z" fill="#FFF"/>
+</svg>
diff --git a/images/reference/vk.png b/images/reference/vk.png
new file mode 100644
index 00000000..f8caefeb
Binary files /dev/null and b/images/reference/vk.png differ
diff --git a/images/svg/mastodon.svg b/images/svg/mastodon.svg
index 701a6214..a54db8a9 100644
--- a/images/svg/mastodon.svg
+++ b/images/svg/mastodon.svg
@@ -1 +1 @@
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\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" aria-label="Mastodon" role="img"><rect fill="#fff" height="512" rx="15%" width="512"/><path d="M424 294c-6 26-47 55-94 61-24 3-48 5-74 4-42-2-75-10-75-10l1 12c5 41 41 44 75 45s64-8 64-8l2 30s-24 13-67 16c-23 1-53-1-86-10-74-19-87-98-89-177v-65c0-81 53-105 53-105 27-13 73-18 121-18h2c48 0 94 5 121 18 0 0 53 24 53 105 0 0 1 60-7 102" fill="#3088d4"/><path d="M368 198v99h-39v-96c0-20-8-30-25-30-19 0-29 12-29 36v52h-38v-52c0-24-10-36-29-36-17 0-25 10-25 30v96h-39v-99c0-20 5-36 15-48 11-12 25-18 42-18 20 0 35 8 45 23l10 17 10-17c10-15 25-23 45-23 17 0 31 6 42 18 10 12 15 28 15 48" fill="#fff"/></svg>
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