twitter icon: https://about.twitter.com/en_us/company/brand-resources.html (2019)
  * changed name "Twitter_Logo_Blue.svg" to "Twitter_Logo_White.svg"
  * changed file contents ".cls-2{fill:#1da1f2;}" to ".cls-2{fill:#FFFFFF;}"

youtube icon: https://www.youtube.com/yt/brand/

instagram icon: https://en.instagram-brand.com/assets/icons
  * changed name "glyph-logo_May2016.png" to "instagram_logo.png"

github icon: https://octicons.github.com/icon/mark-github/

discord icon: https://discordapp.com/branding

C# icon: https://cdnlogo.com/logo/c_760.html (2021-11-25 00:15)
  * changed name "cdnlogo.com_c.svg" to "csharp.svg"

Git icon: https://commons.wikimedia.org/wiki/File:Git_icon.svg (2021-11-25 00:18)
  * changed name "Git_icon.svg" to "git.svg"

HTML5 icon: https://www.w3.org/html/logo/downloads/HTML5_Badge.svg (2021-11-25 00:20)
  * changed name "HTML5_Badge.svg" to "html5.svg"

CSS3 icon: https://upload.wikimedia.org/wikipedia/commons/6/62/CSS3_logo.svg (2021-11-25 00:23)
  * changed name "CSS3_logo.svg" to "css3.svg"

JS icon: https://upload.wikimedia.org/wikipedia/commons/3/3b/Javascript_Logo.png (2021-11-25 00:26)
  * changed name "Javascript_Logo.png" to "js.png"

TS icon: https://www.typescriptlang.org/branding (2021-11-25 00:27)
  * changed name "ts-logo-128.svg" to "ts.svg"

Java icon: https://www.svgrepo.com/svg/184143/java (2021-11-25 00:29)
  * changed name "java-svgrepo-com.svg" to "java.svg"

Dart icon: https://icons8.com/icon/7AFcZ2zirX6Y/dart (2021-11-25 00:36)
  * changed name "icons8-dart.svg" to "dart.svg"

Python icon: https://seeklogo.com/vector-logo/273830/python (2021-11-25 00:45)
  * changed name "python-seeklogo.com.svg" to "python.svg"

Flutter icon: https://seeklogo.com/vector-logo/354671/flutter (2021-11-25 18:04)
  * changed name "flutter-seeklogo.com.svg" to "flutter.svg"

Svelte icon: https://svelte.dev/svelte-logo-horizontal.svg (2021-11-25 18:06)
  * changed name "svelte-logo-horizontal.svg" to "svelte.svg"
  * edited viewbox to be x, y = 13.577 and  w, h = 111.956
  - removed letters because smaller filesize

SVG icon: https://upload.wikimedia.org/wikipedia/commons/4/4f/SVG_Logo.svg (2021-11-25 18:17)
  * changed name "SVG_Logo.svg" to "svg.svg"

Blender logo: https://www.blender.org/about/logo/ (2021-11-26 18:38)
  * changed name "blender_icon_256x256.png" to "blender.png"

Cordova logo: https://cordova.apache.org/artwork/ (2021-11-26 19:01)
  * changed name "cordova_256.png" to "cordova.png"

NodeJS logo: https://nodejs.org//static/images/favicons/android-chrome-512x512.png (2021-11-26 19:40)
  * changed name "android-chrome-512x512.png" to "node.png"

Mastodon logo: https://joinmastodon.org/logos/logo-white.svg (2022-12-19 00:36)
  * changed name "logo-white.svg" to "mastodon.svg"

Tumblr logo: https://assets.tumblr.com/downloads/tumblr_logos_and_guidelines.zip?_v=0 (2022-12-19 00:51)
  * gunzipped "Tumblr_Logos_2018.03.06.svgz", then extracted the usable svg code to "tumblr.svg"