diff --git a/collections/github-pages-examples/github-pages-examples.png b/collections/github-pages-examples/github-pages-examples.png
index 2c5b475233c0..78265799d68c 100644
Binary files a/collections/github-pages-examples/github-pages-examples.png and b/collections/github-pages-examples/github-pages-examples.png differ
diff --git a/collections/government/government.png b/collections/government/government.png
index 498d764a5d17..ab6601d50255 100644
Binary files a/collections/government/government.png and b/collections/government/government.png differ
diff --git a/collections/learn-to-code/learn-to-code.png b/collections/learn-to-code/learn-to-code.png
index f0842b25ff3e..e89b497ac4d5 100644
Binary files a/collections/learn-to-code/learn-to-code.png and b/collections/learn-to-code/learn-to-code.png differ
diff --git a/collections/net-neutrality/net-neutrality.gif b/collections/net-neutrality/net-neutrality.gif
index 4a6b18f23230..1c2f9e0694ff 100644
Binary files a/collections/net-neutrality/net-neutrality.gif and b/collections/net-neutrality/net-neutrality.gif differ
diff --git a/collections/open-source-organizations/open-source-organizations.png b/collections/open-source-organizations/open-source-organizations.png
index 4ad0dc08a669..b71c52f09275 100644
Binary files a/collections/open-source-organizations/open-source-organizations.png and b/collections/open-source-organizations/open-source-organizations.png differ
diff --git a/collections/pixel-art-tools/pixel-art-tools.png b/collections/pixel-art-tools/pixel-art-tools.png
index 4ce48c629af0..c80ce6ecabe5 100644
Binary files a/collections/pixel-art-tools/pixel-art-tools.png and b/collections/pixel-art-tools/pixel-art-tools.png differ
diff --git a/collections/probot-apps/probot-apps.png b/collections/probot-apps/probot-apps.png
index 46ec61587e1a..197b2d0ae748 100644
Binary files a/collections/probot-apps/probot-apps.png and b/collections/probot-apps/probot-apps.png differ
diff --git a/collections/software-in-science/software-in-science.png b/collections/software-in-science/software-in-science.png
index 08ad731becf0..f4ebec3c5c0e 100644
Binary files a/collections/software-in-science/software-in-science.png and b/collections/software-in-science/software-in-science.png differ
diff --git a/collections/text-editors/text-editors.png b/collections/text-editors/text-editors.png
index c9d77482bb72..002121efc299 100644
Binary files a/collections/text-editors/text-editors.png and b/collections/text-editors/text-editors.png differ
diff --git a/collections/tools-for-open-source/tools-for-open-source.png b/collections/tools-for-open-source/tools-for-open-source.png
index b0a76d9cce84..c4c17a5e4461 100644
Binary files a/collections/tools-for-open-source/tools-for-open-source.png and b/collections/tools-for-open-source/tools-for-open-source.png differ
diff --git a/topics/activitypub/activitypub.png b/topics/activitypub/activitypub.png
index e133f9987be5..86a3c9d5507b 100644
Binary files a/topics/activitypub/activitypub.png and b/topics/activitypub/activitypub.png differ
diff --git a/topics/amphp/amphp.png b/topics/amphp/amphp.png
index 4dfcfe42dcbe..b11cddb0d05a 100644
Binary files a/topics/amphp/amphp.png and b/topics/amphp/amphp.png differ
diff --git a/topics/android/android.png b/topics/android/android.png
index a429d6e5974d..a0f1bd62fec0 100644
Binary files a/topics/android/android.png and b/topics/android/android.png differ
diff --git a/topics/angular/angular.png b/topics/angular/angular.png
index ba9dc638333b..9194f0380f25 100644
Binary files a/topics/angular/angular.png and b/topics/angular/angular.png differ
diff --git a/topics/ansible/ansible.png b/topics/ansible/ansible.png
index 8335688ffa43..9034fd3fca4e 100644
Binary files a/topics/ansible/ansible.png and b/topics/ansible/ansible.png differ
diff --git a/topics/antlr/antlr.png b/topics/antlr/antlr.png
index a5063731a891..18e8a3019cb5 100644
Binary files a/topics/antlr/antlr.png and b/topics/antlr/antlr.png differ
diff --git a/topics/arduino/arduino.png b/topics/arduino/arduino.png
index b0be041a0c62..0c4cf546008e 100644
Binary files a/topics/arduino/arduino.png and b/topics/arduino/arduino.png differ
diff --git a/topics/aspnet/aspnet.png b/topics/aspnet/aspnet.png
index ab9c1836c5cf..bd7ccda683eb 100644
Binary files a/topics/aspnet/aspnet.png and b/topics/aspnet/aspnet.png differ
diff --git a/topics/atom/atom.png b/topics/atom/atom.png
index da1dbaccfa80..a4334c328b49 100644
Binary files a/topics/atom/atom.png and b/topics/atom/atom.png differ
diff --git a/topics/aurelia/aurelia.png b/topics/aurelia/aurelia.png
index 63836cb445c8..4c275abf4948 100644
Binary files a/topics/aurelia/aurelia.png and b/topics/aurelia/aurelia.png differ
diff --git a/topics/awesome/awesome.png b/topics/awesome/awesome.png
index 9a8afdef4d02..a82f30bd4c24 100644
Binary files a/topics/awesome/awesome.png and b/topics/awesome/awesome.png differ
diff --git a/topics/azure/azure.png b/topics/azure/azure.png
index b51fe19f72a5..8b2000ee879e 100644
Binary files a/topics/azure/azure.png and b/topics/azure/azure.png differ
diff --git a/topics/backbonejs/backbonejs.png b/topics/backbonejs/backbonejs.png
index 348a8e66e02e..e09ec829abda 100644
Binary files a/topics/backbonejs/backbonejs.png and b/topics/backbonejs/backbonejs.png differ
diff --git a/topics/bash/bash.png b/topics/bash/bash.png
index 4e87241fbd07..bc1daa5ce14c 100644
Binary files a/topics/bash/bash.png and b/topics/bash/bash.png differ
diff --git a/topics/bitcoin/bitcoin.png b/topics/bitcoin/bitcoin.png
index 0f47d4bb1f82..1661c6f2cee0 100644
Binary files a/topics/bitcoin/bitcoin.png and b/topics/bitcoin/bitcoin.png differ
diff --git a/topics/bootstrap/bootstrap.png b/topics/bootstrap/bootstrap.png
index d4c471ec7490..8dcc9df6426b 100644
Binary files a/topics/bootstrap/bootstrap.png and b/topics/bootstrap/bootstrap.png differ
diff --git a/topics/c/c.png b/topics/c/c.png
index 74ed796fc374..b3cc43df5b43 100644
Binary files a/topics/c/c.png and b/topics/c/c.png differ
diff --git a/topics/chrome-extension/chrome-extension.png b/topics/chrome-extension/chrome-extension.png
index 35718226758e..6b3850157aa9 100644
Binary files a/topics/chrome-extension/chrome-extension.png and b/topics/chrome-extension/chrome-extension.png differ
diff --git a/topics/chrome/chrome.png b/topics/chrome/chrome.png
index 35718226758e..6b3850157aa9 100644
Binary files a/topics/chrome/chrome.png and b/topics/chrome/chrome.png differ
diff --git a/topics/clojure/clojure.png b/topics/clojure/clojure.png
index c3e4fd06c445..7e48a31658e5 100644
Binary files a/topics/clojure/clojure.png and b/topics/clojure/clojure.png differ
diff --git a/topics/conan/conan.png b/topics/conan/conan.png
index 18e4cd43ec4b..fc14e60c59bb 100644
Binary files a/topics/conan/conan.png and b/topics/conan/conan.png differ
diff --git a/topics/contentful/contentful.png b/topics/contentful/contentful.png
index 5271bb83cd4f..cd8ee11ce299 100644
Binary files a/topics/contentful/contentful.png and b/topics/contentful/contentful.png differ
diff --git a/topics/cpp/cpp.png b/topics/cpp/cpp.png
index e5c6ff1a2b66..29210db572b7 100644
Binary files a/topics/cpp/cpp.png and b/topics/cpp/cpp.png differ
diff --git a/topics/crystal/crystal.png b/topics/crystal/crystal.png
index 3466866c43f3..ede61db3ef9f 100644
Binary files a/topics/crystal/crystal.png and b/topics/crystal/crystal.png differ
diff --git a/topics/csharp/csharp.png b/topics/csharp/csharp.png
index 2f060e28be1d..3756b6cda224 100644
Binary files a/topics/csharp/csharp.png and b/topics/csharp/csharp.png differ
diff --git a/topics/css/css.png b/topics/css/css.png
index 6f3e5d955863..7ff8303622ca 100644
Binary files a/topics/css/css.png and b/topics/css/css.png differ
diff --git a/topics/cwl/cwl.png b/topics/cwl/cwl.png
index 3fb963e41e50..f188b4466e96 100644
Binary files a/topics/cwl/cwl.png and b/topics/cwl/cwl.png differ
diff --git a/topics/dart/dart.png b/topics/dart/dart.png
index 67c29faed188..8ceffda5faf9 100644
Binary files a/topics/dart/dart.png and b/topics/dart/dart.png differ
diff --git a/topics/discord/discord.png b/topics/discord/discord.png
index 3ef1d3bb76bc..84ebe954c416 100644
Binary files a/topics/discord/discord.png and b/topics/discord/discord.png differ
diff --git a/topics/django/django.png b/topics/django/django.png
index 060e8cdf2aa5..dd2c1ab90e80 100644
Binary files a/topics/django/django.png and b/topics/django/django.png differ
diff --git a/topics/docker/docker.png b/topics/docker/docker.png
index d19a9dc2a563..663552dbb6d0 100644
Binary files a/topics/docker/docker.png and b/topics/docker/docker.png differ
diff --git a/topics/dotnet/dotnet.png b/topics/dotnet/dotnet.png
index 488d365c400e..35382249d2e6 100644
Binary files a/topics/dotnet/dotnet.png and b/topics/dotnet/dotnet.png differ
diff --git a/topics/duckduckgo/duckduckgo.png b/topics/duckduckgo/duckduckgo.png
index a151ba72724a..2c9362b1d2c3 100644
Binary files a/topics/duckduckgo/duckduckgo.png and b/topics/duckduckgo/duckduckgo.png differ
diff --git a/topics/electron/electron.png b/topics/electron/electron.png
index 5a3b4964cd26..6587dfac58c7 100644
Binary files a/topics/electron/electron.png and b/topics/electron/electron.png differ
diff --git a/topics/emacs/emacs.png b/topics/emacs/emacs.png
index 470119d44289..dace410117ca 100644
Binary files a/topics/emacs/emacs.png and b/topics/emacs/emacs.png differ
diff --git a/topics/ember/ember.png b/topics/ember/ember.png
index 78e46d07c847..a07ce3653261 100644
Binary files a/topics/ember/ember.png and b/topics/ember/ember.png differ
diff --git a/topics/es6/es6.png b/topics/es6/es6.png
index 3afbb680e584..08c9b4063a05 100644
Binary files a/topics/es6/es6.png and b/topics/es6/es6.png differ
diff --git a/topics/eslint/eslint.png b/topics/eslint/eslint.png
index cbbf4599b1b1..38f2e0591c7e 100644
Binary files a/topics/eslint/eslint.png and b/topics/eslint/eslint.png differ
diff --git a/topics/ethereum/ethereum.png b/topics/ethereum/ethereum.png
index 5a103de289f5..ee3c4f9c9962 100644
Binary files a/topics/ethereum/ethereum.png and b/topics/ethereum/ethereum.png differ
diff --git a/topics/express/express.png b/topics/express/express.png
index a04e11fcadd0..c6082324212a 100644
Binary files a/topics/express/express.png and b/topics/express/express.png differ
diff --git a/topics/f-droid/f-droid.png b/topics/f-droid/f-droid.png
index 40ce1fde5ae8..015154a18c28 100644
Binary files a/topics/f-droid/f-droid.png and b/topics/f-droid/f-droid.png differ
diff --git a/topics/firebase/firebase.png b/topics/firebase/firebase.png
index 15c0ea4c91a5..abea8f49905f 100644
Binary files a/topics/firebase/firebase.png and b/topics/firebase/firebase.png differ
diff --git a/topics/firefox-extension/firefox-extension.png b/topics/firefox-extension/firefox-extension.png
index ef3eba40daa4..5bbfb5fc02f3 100644
Binary files a/topics/firefox-extension/firefox-extension.png and b/topics/firefox-extension/firefox-extension.png differ
diff --git a/topics/firefox/firefox.png b/topics/firefox/firefox.png
index ef3eba40daa4..5bbfb5fc02f3 100644
Binary files a/topics/firefox/firefox.png and b/topics/firefox/firefox.png differ
diff --git a/topics/first-robotics-competition/first-robotics-competition.png b/topics/first-robotics-competition/first-robotics-competition.png
index ac74181934e7..29a8f0278431 100644
Binary files a/topics/first-robotics-competition/first-robotics-competition.png and b/topics/first-robotics-competition/first-robotics-competition.png differ
diff --git a/topics/first-tech-challenge/first-tech-challenge.png b/topics/first-tech-challenge/first-tech-challenge.png
index 0f4a7f5c5583..2cc91b468b5c 100644
Binary files a/topics/first-tech-challenge/first-tech-challenge.png and b/topics/first-tech-challenge/first-tech-challenge.png differ
diff --git a/topics/first/first.png b/topics/first/first.png
index fc39faaddb03..552bd30b96ec 100644
Binary files a/topics/first/first.png and b/topics/first/first.png differ
diff --git a/topics/fish/fish.png b/topics/fish/fish.png
index f54bdd03f552..79c086234096 100644
Binary files a/topics/fish/fish.png and b/topics/fish/fish.png differ
diff --git a/topics/flask/flask.png b/topics/flask/flask.png
index 96d9d1d7038b..69e4eb3edaf3 100644
Binary files a/topics/flask/flask.png and b/topics/flask/flask.png differ
diff --git a/topics/game-off/game-off.png b/topics/game-off/game-off.png
index 95d7e6585be2..b08b85d4ef9e 100644
Binary files a/topics/game-off/game-off.png and b/topics/game-off/game-off.png differ
diff --git a/topics/gamemaker/gamemaker.png b/topics/gamemaker/gamemaker.png
index bdb8e60e5d39..c9d6172b6c27 100644
Binary files a/topics/gamemaker/gamemaker.png and b/topics/gamemaker/gamemaker.png differ
diff --git a/topics/git/git.png b/topics/git/git.png
index d365e4917493..7356824b0954 100644
Binary files a/topics/git/git.png and b/topics/git/git.png differ
diff --git a/topics/global-game-jam/global-game-jam.png b/topics/global-game-jam/global-game-jam.png
index ba3d9e95ae1d..2188190b6acc 100644
Binary files a/topics/global-game-jam/global-game-jam.png and b/topics/global-game-jam/global-game-jam.png differ
diff --git a/topics/go/go.png b/topics/go/go.png
index b24f1ddf4d00..b83c74cc58e7 100644
Binary files a/topics/go/go.png and b/topics/go/go.png differ
diff --git a/topics/godot/godot.png b/topics/godot/godot.png
index 34508139fb65..f43dde8b24f6 100644
Binary files a/topics/godot/godot.png and b/topics/godot/godot.png differ
diff --git a/topics/google/google.png b/topics/google/google.png
index 3afcfc9050b5..1de126840639 100644
Binary files a/topics/google/google.png and b/topics/google/google.png differ
diff --git a/topics/gradle/gradle.png b/topics/gradle/gradle.png
index 29c75685a1fd..3b9fc2b5f169 100644
Binary files a/topics/gradle/gradle.png and b/topics/gradle/gradle.png differ
diff --git a/topics/gulp/gulp.png b/topics/gulp/gulp.png
index 3a32ccc7e663..22b0ccfa28fc 100644
Binary files a/topics/gulp/gulp.png and b/topics/gulp/gulp.png differ
diff --git a/topics/haskell/haskell.png b/topics/haskell/haskell.png
index b1df3b091210..9d284c221ddc 100644
Binary files a/topics/haskell/haskell.png and b/topics/haskell/haskell.png differ
diff --git a/topics/homebrew/homebrew.png b/topics/homebrew/homebrew.png
index aa500a4f26ca..c5236a2de0a5 100644
Binary files a/topics/homebrew/homebrew.png and b/topics/homebrew/homebrew.png differ
diff --git a/topics/html/html.png b/topics/html/html.png
index 4715244866d7..81a1936edec7 100644
Binary files a/topics/html/html.png and b/topics/html/html.png differ
diff --git a/topics/indieweb/indieweb.png b/topics/indieweb/indieweb.png
index ba347af4c2d1..c6ae60245d87 100644
Binary files a/topics/indieweb/indieweb.png and b/topics/indieweb/indieweb.png differ
diff --git a/topics/ios/ios.png b/topics/ios/ios.png
index 975d01b9f78b..fe2055916ae9 100644
Binary files a/topics/ios/ios.png and b/topics/ios/ios.png differ
diff --git a/topics/ipfs/ipfs.png b/topics/ipfs/ipfs.png
index adbc5fca14e4..1b941c501c71 100644
Binary files a/topics/ipfs/ipfs.png and b/topics/ipfs/ipfs.png differ
diff --git a/topics/java/java.png b/topics/java/java.png
index 9f64199a8e39..b8d79a24c7d1 100644
Binary files a/topics/java/java.png and b/topics/java/java.png differ
diff --git a/topics/javascript/javascript.png b/topics/javascript/javascript.png
index 3a9e9c8e8301..38066bb6d402 100644
Binary files a/topics/javascript/javascript.png and b/topics/javascript/javascript.png differ
diff --git a/topics/jekyll/jekyll.png b/topics/jekyll/jekyll.png
index 648783524f28..8cea99795d9d 100644
Binary files a/topics/jekyll/jekyll.png and b/topics/jekyll/jekyll.png differ
diff --git a/topics/jquery/jquery.png b/topics/jquery/jquery.png
index 6b70d1d249bd..779944ee8c27 100644
Binary files a/topics/jquery/jquery.png and b/topics/jquery/jquery.png differ
diff --git a/topics/js13kgames/js13kgames.png b/topics/js13kgames/js13kgames.png
index 727633232eee..ff2944cca358 100644
Binary files a/topics/js13kgames/js13kgames.png and b/topics/js13kgames/js13kgames.png differ
diff --git a/topics/json/json.png b/topics/json/json.png
index 9d02a675e347..2a8e93618e99 100644
Binary files a/topics/json/json.png and b/topics/json/json.png differ
diff --git a/topics/jupyter-notebook/jupyter-notebook.png b/topics/jupyter-notebook/jupyter-notebook.png
index 38e28e28556b..2c96dc4bbd2d 100644
Binary files a/topics/jupyter-notebook/jupyter-notebook.png and b/topics/jupyter-notebook/jupyter-notebook.png differ
diff --git a/topics/kerbal-space-program/kerbal-space-program.png b/topics/kerbal-space-program/kerbal-space-program.png
index 9de872e48088..cb3b1ed46e4a 100644
Binary files a/topics/kerbal-space-program/kerbal-space-program.png and b/topics/kerbal-space-program/kerbal-space-program.png differ
diff --git a/topics/kotlin/kotlin.png b/topics/kotlin/kotlin.png
index c0421b15caa0..1ede18bc5d21 100644
Binary files a/topics/kotlin/kotlin.png and b/topics/kotlin/kotlin.png differ
diff --git a/topics/kubernetes/kubernetes.png b/topics/kubernetes/kubernetes.png
index eab6da58755d..8ab6809c56e0 100644
Binary files a/topics/kubernetes/kubernetes.png and b/topics/kubernetes/kubernetes.png differ
diff --git a/topics/laravel/laravel.png b/topics/laravel/laravel.png
index d1ad7002b162..c18d1492f25e 100644
Binary files a/topics/laravel/laravel.png and b/topics/laravel/laravel.png differ
diff --git a/topics/latex/latex.png b/topics/latex/latex.png
index 8bc9beaadd1f..378975670508 100644
Binary files a/topics/latex/latex.png and b/topics/latex/latex.png differ
diff --git a/topics/linux/linux.png b/topics/linux/linux.png
index c2098dd6dce0..709082e78ab4 100644
Binary files a/topics/linux/linux.png and b/topics/linux/linux.png differ
diff --git a/topics/lisp/lisp.png b/topics/lisp/lisp.png
index 968fe1569a83..47ae68c66b66 100644
Binary files a/topics/lisp/lisp.png and b/topics/lisp/lisp.png differ
diff --git a/topics/lua/lua.png b/topics/lua/lua.png
index aa9af2857a33..b7c1963e1a92 100644
Binary files a/topics/lua/lua.png and b/topics/lua/lua.png differ
diff --git a/topics/ludum-dare/ludum-dare.png b/topics/ludum-dare/ludum-dare.png
index d2ad2020d7e5..e3f4c7b430d3 100644
Binary files a/topics/ludum-dare/ludum-dare.png and b/topics/ludum-dare/ludum-dare.png differ
diff --git a/topics/macos/macos.png b/topics/macos/macos.png
index 1ffe70f8e5b8..2ad91b602493 100644
Binary files a/topics/macos/macos.png and b/topics/macos/macos.png differ
diff --git a/topics/mahapps/mahapps.png b/topics/mahapps/mahapps.png
index 46b67ef90fda..ddb5e3185290 100644
Binary files a/topics/mahapps/mahapps.png and b/topics/mahapps/mahapps.png differ
diff --git a/topics/markdown/markdown.png b/topics/markdown/markdown.png
index 5caacab1453f..ea86e3c6ff3f 100644
Binary files a/topics/markdown/markdown.png and b/topics/markdown/markdown.png differ
diff --git a/topics/mastodon/mastodon.png b/topics/mastodon/mastodon.png
index 1683cf25562d..3fbb18147a74 100644
Binary files a/topics/mastodon/mastodon.png and b/topics/mastodon/mastodon.png differ
diff --git a/topics/material-design/material-design.png b/topics/material-design/material-design.png
index e5554ac6d16b..3cd35700098b 100644
Binary files a/topics/material-design/material-design.png and b/topics/material-design/material-design.png differ
diff --git a/topics/matlab/matlab.png b/topics/matlab/matlab.png
index 320724291c5b..c23066b07745 100644
Binary files a/topics/matlab/matlab.png and b/topics/matlab/matlab.png differ
diff --git a/topics/maven/maven.png b/topics/maven/maven.png
index 1a871b8b84cb..b67d0fa9aec3 100644
Binary files a/topics/maven/maven.png and b/topics/maven/maven.png differ
diff --git a/topics/microformats/microformats.png b/topics/microformats/microformats.png
index 30dbb42162ea..05c147708dfe 100644
Binary files a/topics/microformats/microformats.png and b/topics/microformats/microformats.png differ
diff --git a/topics/minecraft/minecraft.png b/topics/minecraft/minecraft.png
index 7a641fc0552d..9a62f388030c 100644
Binary files a/topics/minecraft/minecraft.png and b/topics/minecraft/minecraft.png differ
diff --git a/topics/monero/monero.png b/topics/monero/monero.png
index 7e98e459680c..82fa6e26acbb 100644
Binary files a/topics/monero/monero.png and b/topics/monero/monero.png differ
diff --git a/topics/mongodb/mongodb.png b/topics/mongodb/mongodb.png
index 8ddb0b75ab04..756c92ff0e50 100644
Binary files a/topics/mongodb/mongodb.png and b/topics/mongodb/mongodb.png differ
diff --git a/topics/mongoose/mongoose.png b/topics/mongoose/mongoose.png
index b52129c6df57..c203fbb93706 100644
Binary files a/topics/mongoose/mongoose.png and b/topics/mongoose/mongoose.png differ
diff --git a/topics/mvvmcross/mvvmcross.png b/topics/mvvmcross/mvvmcross.png
index 2719a4b1977f..98d0847f4665 100644
Binary files a/topics/mvvmcross/mvvmcross.png and b/topics/mvvmcross/mvvmcross.png differ
diff --git a/topics/mysql/mysql.png b/topics/mysql/mysql.png
index ac2dc57c943c..9c9392de801d 100644
Binary files a/topics/mysql/mysql.png and b/topics/mysql/mysql.png differ
diff --git a/topics/nativescript/nativescript.png b/topics/nativescript/nativescript.png
index daec75a974fc..7d302094242c 100644
Binary files a/topics/nativescript/nativescript.png and b/topics/nativescript/nativescript.png differ
diff --git a/topics/neo/neo.png b/topics/neo/neo.png
index 0a35988f7b52..2808d88df013 100644
Binary files a/topics/neo/neo.png and b/topics/neo/neo.png differ
diff --git a/topics/nim/nim.png b/topics/nim/nim.png
index 773515822d24..84a05cb4a87e 100644
Binary files a/topics/nim/nim.png and b/topics/nim/nim.png differ
diff --git a/topics/nodejs/nodejs.png b/topics/nodejs/nodejs.png
index cc709da28b16..16bd9514e79b 100644
Binary files a/topics/nodejs/nodejs.png and b/topics/nodejs/nodejs.png differ
diff --git a/topics/npm/npm.png b/topics/npm/npm.png
index 6dbcc73ba510..7ec9c20fe314 100644
Binary files a/topics/npm/npm.png and b/topics/npm/npm.png differ
diff --git a/topics/nuget/nuget.png b/topics/nuget/nuget.png
index 4b2cfe28fe6a..f991f2ea3be6 100644
Binary files a/topics/nuget/nuget.png and b/topics/nuget/nuget.png differ
diff --git a/topics/objective-c/objective-c.png b/topics/objective-c/objective-c.png
index b35621e6df7b..e5152d578a28 100644
Binary files a/topics/objective-c/objective-c.png and b/topics/objective-c/objective-c.png differ
diff --git a/topics/open-access/open-access.png b/topics/open-access/open-access.png
index ac1a079468cd..e4077403f6fb 100644
Binary files a/topics/open-access/open-access.png and b/topics/open-access/open-access.png differ
diff --git a/topics/opencv/opencv.png b/topics/opencv/opencv.png
index d2910ad55587..166fcb005fd9 100644
Binary files a/topics/opencv/opencv.png and b/topics/opencv/opencv.png differ
diff --git a/topics/openfin/openfin.png b/topics/openfin/openfin.png
index 499bafb6870d..d63244149c7d 100644
Binary files a/topics/openfin/openfin.png and b/topics/openfin/openfin.png differ
diff --git a/topics/opengl/opengl.png b/topics/opengl/opengl.png
index 94ed28a30cf1..734301fd415d 100644
Binary files a/topics/opengl/opengl.png and b/topics/opengl/opengl.png differ
diff --git a/topics/perl/perl.png b/topics/perl/perl.png
index 9c5384497d97..6ed2476df731 100644
Binary files a/topics/perl/perl.png and b/topics/perl/perl.png differ
diff --git a/topics/perl6/perl6.png b/topics/perl6/perl6.png
index b5b2f2277fbf..7234bdadf15d 100644
Binary files a/topics/perl6/perl6.png and b/topics/perl6/perl6.png differ
diff --git a/topics/pharo/pharo.png b/topics/pharo/pharo.png
index f7546760f3be..9670fd6aadc8 100644
Binary files a/topics/pharo/pharo.png and b/topics/pharo/pharo.png differ
diff --git a/topics/postgresql/postgresql.png b/topics/postgresql/postgresql.png
index ba24adc299c7..03ed352b938c 100644
Binary files a/topics/postgresql/postgresql.png and b/topics/postgresql/postgresql.png differ
diff --git a/topics/probot/probot.png b/topics/probot/probot.png
index 1909a6fc7e1f..4128a92ccfe8 100644
Binary files a/topics/probot/probot.png and b/topics/probot/probot.png differ
diff --git a/topics/pwa/pwa.png b/topics/pwa/pwa.png
index 74f27da593bb..3d2a620c47f7 100644
Binary files a/topics/pwa/pwa.png and b/topics/pwa/pwa.png differ
diff --git a/topics/python/python.png b/topics/python/python.png
index 2608438f45c6..721213ef2353 100644
Binary files a/topics/python/python.png and b/topics/python/python.png differ
diff --git a/topics/qt/qt.png b/topics/qt/qt.png
index 15ae49852b57..5e6b75655556 100644
Binary files a/topics/qt/qt.png and b/topics/qt/qt.png differ
diff --git a/topics/r/r.png b/topics/r/r.png
index be6c5763ce30..93896bbc4726 100644
Binary files a/topics/r/r.png and b/topics/r/r.png differ
diff --git a/topics/racket/racket.png b/topics/racket/racket.png
index 99c8ecb21e59..ec996a2fc45e 100644
Binary files a/topics/racket/racket.png and b/topics/racket/racket.png differ
diff --git a/topics/rails/rails.png b/topics/rails/rails.png
index d3c597c14afa..f8c041b3bd09 100644
Binary files a/topics/rails/rails.png and b/topics/rails/rails.png differ
diff --git a/topics/raspberry-pi/raspberry-pi.png b/topics/raspberry-pi/raspberry-pi.png
index acd5d9afd463..c911da70f388 100644
Binary files a/topics/raspberry-pi/raspberry-pi.png and b/topics/raspberry-pi/raspberry-pi.png differ
diff --git a/topics/ratchet/ratchet.png b/topics/ratchet/ratchet.png
index 98c3a1f42f88..f9517595fb88 100644
Binary files a/topics/ratchet/ratchet.png and b/topics/ratchet/ratchet.png differ
diff --git a/topics/react-native/react-native.png b/topics/react-native/react-native.png
index 43f03f6452d4..6baab6b90a0b 100644
Binary files a/topics/react-native/react-native.png and b/topics/react-native/react-native.png differ
diff --git a/topics/react/react.png b/topics/react/react.png
index 23ceff3d896c..3c2e1040de02 100644
Binary files a/topics/react/react.png and b/topics/react/react.png differ
diff --git a/topics/reactiveui/reactiveui.png b/topics/reactiveui/reactiveui.png
index 2876107fe106..3eda825a77f3 100644
Binary files a/topics/reactiveui/reactiveui.png and b/topics/reactiveui/reactiveui.png differ
diff --git a/topics/reactphp/reactphp.png b/topics/reactphp/reactphp.png
index c16513f34a95..3890037cb348 100644
Binary files a/topics/reactphp/reactphp.png and b/topics/reactphp/reactphp.png differ
diff --git a/topics/redux/redux.png b/topics/redux/redux.png
index 0c5c6dbdfc96..df2e8fbc3d0f 100644
Binary files a/topics/redux/redux.png and b/topics/redux/redux.png differ
diff --git a/topics/reflex-frp/reflex-frp.png b/topics/reflex-frp/reflex-frp.png
index d5a9912cfbb8..1cc1b3bd6492 100644
Binary files a/topics/reflex-frp/reflex-frp.png and b/topics/reflex-frp/reflex-frp.png differ
diff --git a/topics/ruby/ruby.png b/topics/ruby/ruby.png
index 630ddb348b56..9d499f06977d 100644
Binary files a/topics/ruby/ruby.png and b/topics/ruby/ruby.png differ
diff --git a/topics/rust/rust.png b/topics/rust/rust.png
index 1352e75acc38..d071ec71830a 100644
Binary files a/topics/rust/rust.png and b/topics/rust/rust.png differ
diff --git a/topics/sass/sass.png b/topics/sass/sass.png
index ef6d706763aa..7a545ad668e1 100644
Binary files a/topics/sass/sass.png and b/topics/sass/sass.png differ
diff --git a/topics/scala/scala.png b/topics/scala/scala.png
index 7528c362742c..fcdad56e9647 100644
Binary files a/topics/scala/scala.png and b/topics/scala/scala.png differ
diff --git a/topics/scikit-learn/scikit-learn.png b/topics/scikit-learn/scikit-learn.png
index 8cd6901c22c2..9366e70e8c5c 100644
Binary files a/topics/scikit-learn/scikit-learn.png and b/topics/scikit-learn/scikit-learn.png differ
diff --git a/topics/spacevim/spacevim.png b/topics/spacevim/spacevim.png
index f8cbf06ab456..9c2ed90fbb25 100644
Binary files a/topics/spacevim/spacevim.png and b/topics/spacevim/spacevim.png differ
diff --git a/topics/spring-boot/spring-boot.png b/topics/spring-boot/spring-boot.png
index 74bf3aa1a994..044c2a8feaca 100644
Binary files a/topics/spring-boot/spring-boot.png and b/topics/spring-boot/spring-boot.png differ
diff --git a/topics/sql/sql.png b/topics/sql/sql.png
index e655e4bd170f..ca1d3619262b 100644
Binary files a/topics/sql/sql.png and b/topics/sql/sql.png differ
diff --git a/topics/storybook/storybook.png b/topics/storybook/storybook.png
old mode 100755
new mode 100644
index 7dd72c419fc7..52b46db38340
Binary files a/topics/storybook/storybook.png and b/topics/storybook/storybook.png differ
diff --git a/topics/styled-components/styled-components.png b/topics/styled-components/styled-components.png
index ffe86a82da8d..1b31831ab0ea 100644
Binary files a/topics/styled-components/styled-components.png and b/topics/styled-components/styled-components.png differ
diff --git a/topics/sublime-text/sublime-text.png b/topics/sublime-text/sublime-text.png
old mode 100755
new mode 100644
index 923c3e964e55..7d5c523f55de
Binary files a/topics/sublime-text/sublime-text.png and b/topics/sublime-text/sublime-text.png differ
diff --git a/topics/swift/swift.png b/topics/swift/swift.png
index af80c6898a2e..376d148c27c1 100644
Binary files a/topics/swift/swift.png and b/topics/swift/swift.png differ
diff --git a/topics/telegram/telegram.png b/topics/telegram/telegram.png
index 0ca94367aa6b..feba887546ef 100644
Binary files a/topics/telegram/telegram.png and b/topics/telegram/telegram.png differ
diff --git a/topics/tensorflow/tensorflow.png b/topics/tensorflow/tensorflow.png
index 9804a87e9626..d8848f493070 100644
Binary files a/topics/tensorflow/tensorflow.png and b/topics/tensorflow/tensorflow.png differ
diff --git a/topics/terraform/terraform.png b/topics/terraform/terraform.png
index d259b4c89e91..dadf0bd2a2c5 100644
Binary files a/topics/terraform/terraform.png and b/topics/terraform/terraform.png differ
diff --git a/topics/thelounge/thelounge.png b/topics/thelounge/thelounge.png
index 1b93aeb7e9ef..3a642f930ec8 100644
Binary files a/topics/thelounge/thelounge.png and b/topics/thelounge/thelounge.png differ
diff --git a/topics/tic-80/tic-80.png b/topics/tic-80/tic-80.png
index af2b822d6f15..b28e7506d369 100644
Binary files a/topics/tic-80/tic-80.png and b/topics/tic-80/tic-80.png differ
diff --git a/topics/twitter/twitter.png b/topics/twitter/twitter.png
index d4adf3cb007b..3b3d2e48612c 100644
Binary files a/topics/twitter/twitter.png and b/topics/twitter/twitter.png differ
diff --git a/topics/typescript/typescript.png b/topics/typescript/typescript.png
index 02b2fe3e4495..84d6c43b23c9 100644
Binary files a/topics/typescript/typescript.png and b/topics/typescript/typescript.png differ
diff --git a/topics/ubuntu/ubuntu.png b/topics/ubuntu/ubuntu.png
index b25f2ba61b4f..1d04814c76e8 100644
Binary files a/topics/ubuntu/ubuntu.png and b/topics/ubuntu/ubuntu.png differ
diff --git a/topics/unity/unity.png b/topics/unity/unity.png
index f745fc4280a6..fcd66c72c6b4 100644
Binary files a/topics/unity/unity.png and b/topics/unity/unity.png differ
diff --git a/topics/unreal-engine/unreal-engine.png b/topics/unreal-engine/unreal-engine.png
index fb05a56180fa..eccceeb98df9 100644
Binary files a/topics/unreal-engine/unreal-engine.png and b/topics/unreal-engine/unreal-engine.png differ
diff --git a/topics/uportal/uportal.png b/topics/uportal/uportal.png
index 8120e727209a..82551993be2d 100644
Binary files a/topics/uportal/uportal.png and b/topics/uportal/uportal.png differ
diff --git a/topics/vagrant/vagrant.png b/topics/vagrant/vagrant.png
index bd98bdd3dd30..1212cf8a7c3e 100644
Binary files a/topics/vagrant/vagrant.png and b/topics/vagrant/vagrant.png differ
diff --git a/topics/vim/vim.png b/topics/vim/vim.png
index b0c3c098a594..a4f89f279d87 100644
Binary files a/topics/vim/vim.png and b/topics/vim/vim.png differ
diff --git a/topics/visual-studio-code/visual-studio-code.png b/topics/visual-studio-code/visual-studio-code.png
index d879c9df56be..221605f0f730 100644
Binary files a/topics/visual-studio-code/visual-studio-code.png and b/topics/visual-studio-code/visual-studio-code.png differ
diff --git a/topics/vue/vue.png b/topics/vue/vue.png
index c22327dffca9..5abf82a1e889 100644
Binary files a/topics/vue/vue.png and b/topics/vue/vue.png differ
diff --git a/topics/wagtail/wagtail.png b/topics/wagtail/wagtail.png
index d76e88865b8a..0f5287bc3786 100644
Binary files a/topics/wagtail/wagtail.png and b/topics/wagtail/wagtail.png differ
diff --git a/topics/web-assembly/web-assembly.png b/topics/web-assembly/web-assembly.png
index 9d17f4399b06..e28239f48303 100644
Binary files a/topics/web-assembly/web-assembly.png and b/topics/web-assembly/web-assembly.png differ
diff --git a/topics/web-components/web-components.png b/topics/web-components/web-components.png
index e35e7f296846..cfd5d45885f5 100644
Binary files a/topics/web-components/web-components.png and b/topics/web-components/web-components.png differ
diff --git a/topics/webpack/webpack.png b/topics/webpack/webpack.png
index 7cbfcbf5f6e9..c830e6569777 100644
Binary files a/topics/webpack/webpack.png and b/topics/webpack/webpack.png differ
diff --git a/topics/windows/windows.png b/topics/windows/windows.png
index 32336a8bdfd6..bf4244f34036 100644
Binary files a/topics/windows/windows.png and b/topics/windows/windows.png differ
diff --git a/topics/wordpress/wordpress.png b/topics/wordpress/wordpress.png
index 7e5237122b12..5da2f7d3c908 100644
Binary files a/topics/wordpress/wordpress.png and b/topics/wordpress/wordpress.png differ
diff --git a/topics/xamarin/xamarin.png b/topics/xamarin/xamarin.png
index 823024499f14..35d46a5039cd 100644
Binary files a/topics/xamarin/xamarin.png and b/topics/xamarin/xamarin.png differ
diff --git a/topics/xmake/xmake.png b/topics/xmake/xmake.png
index d7587cdec5b3..ed646e7e132c 100644
Binary files a/topics/xmake/xmake.png and b/topics/xmake/xmake.png differ
diff --git a/topics/yii/yii.png b/topics/yii/yii.png
index 2bf1f2bbe19e..f4af52ef90c9 100644
Binary files a/topics/yii/yii.png and b/topics/yii/yii.png differ
diff --git a/topics/zeit/zeit.png b/topics/zeit/zeit.png
index fa6725d8c8cc..887de255b97a 100644
Binary files a/topics/zeit/zeit.png and b/topics/zeit/zeit.png differ
diff --git a/topics/zeplin/zeplin.png b/topics/zeplin/zeplin.png
index 779e0a7457a6..40614ef477a6 100644
Binary files a/topics/zeplin/zeplin.png and b/topics/zeplin/zeplin.png differ