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Added support to PurgeCSS (#1562)
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Tackled #1329 with [PurgeCSS](https://purgecss.com/).

Being talking with @varuniyer about using
[jekyll-uncss](https://github.com/episource/jekyll-uncss) to reduce css
file sizes by ditching unused classes. This approach have 3 main
problems:

1 - have some limitations as pointed
[here](alshedivat/al-folio#1329 (comment))
2 - last update to
[jekyll-uncss](https://github.com/episource/jekyll-uncss) was about 3
years ago, so it might have a few issues
3 - [uncss](https://github.com/uncss/uncss) haven't seem a new release
in a while, currently [lacking
maintenance](uncss/uncss#459), and using some
deprecated libraries as seem here:

```
npm install -g uncss
npm WARN deprecated request-promise-native@1.0.9: request-promise-native has been deprecated because it extends the now deprecated request package, see request/request#3142
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated w3c-hr-time@1.0.2: Use your platform's native performance.now() and performance.timeOrigin.
npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated request@2.88.2: request has been deprecated, see request/request#3142
```

I thought about giving PurgeCSS a go, since it has been more [actively
maintaned](https://github.com/FullHuman/purgecss), but
[jekyll-purgecss](https://github.com/mhanberg/jekyll-purgecss) haven't.

For this, I needed to change to use some local libraries instead of
getting them via CDN. The good news is that it is quite effective in
reducing css file sizes. Comparing dir sizes with `du -hs
_site/assets/css/`:

| current | minify | PurgeCSS | PurgeCSS + minify |
| ------- | ------ | -------- | ----------------- |
| 1,1M    | 988K   | 456K     | 420K              |

---------

Signed-off-by: George Araujo <george.gcac@gmail.com>
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george-gca authored and h2o64 committed May 4, 2024
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4 changes: 3 additions & 1 deletion .github/workflows/deploy.yml
Original file line number Diff line number Diff line change
Expand Up @@ -30,8 +30,10 @@ jobs:
run: |
pip3 install --upgrade jupyter
npm install -g mermaid.cli
npm install -g purgecss
export JEKYLL_ENV=production
bundle exec jekyll build
bundle exec jekyll build --lsi
purgecss -c purgecss.config.js
- name: Deploy 🚀
if: github.event_name != 'pull_request'
uses: JamesIves/github-pages-deploy-action@v4
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25 changes: 4 additions & 21 deletions _config.yml
Original file line number Diff line number Diff line change
Expand Up @@ -26,10 +26,6 @@ impressum_path: # set to path to include impressum link in the footer, use the
# Theme
# -----------------------------------------------------------------------------

# code highlighter theme
highlight_theme_light: default # https://github.com/jwarby/jekyll-pygments-themes
highlight_theme_dark: native # https://github.com/jwarby/jekyll-pygments-themes

# repo color theme
repo_theme_light: default # https://github.com/anuraghazra/github-readme-stats/blob/master/themes/README.md
repo_theme_dark: dark # https://github.com/anuraghazra/github-readme-stats/blob/master/themes/README.md
Expand Down Expand Up @@ -240,6 +236,9 @@ defaults:
values:
sitemap: false

sass:
style: compressed

# -----------------------------------------------------------------------------
# Jekyll Minifier
# -----------------------------------------------------------------------------
Expand Down Expand Up @@ -375,19 +374,8 @@ enable_progressbar: true # enables a horizontal progress bar linked to
# Library versions
# -----------------------------------------------------------------------------

academicons:
version: "1.9.1"
integrity: "sha256-i1+4qU2G2860dGGIOJscdC30s9beBXjFfzjWLjBRsBg="
bootstrap:
version: "4.6.1"
integrity:
css: "sha256-DF7Zhf293AJxJNTmh5zhoYYIMs2oXitRfBjY+9L//AY="
js: "sha256-fgLAgv7fyCGopR/gBNq2iW3ZKIdqIcyshnUULC4vex8="
bootstrap-table:
version: "1.21.4"
fontawesome:
version: "6.4.0"
integrity: "sha256-HtsXJanqjKTc8vVQjO4YMhiqFoXkfBsjBWcX91T1jr8="
version: "1.22.1"
jquery:
version: "3.6.0"
integrity: "sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
Expand All @@ -396,11 +384,6 @@ mathjax:
masonry:
version: "4.2.2"
integrity: "sha256-Nn1q/fx0H7SNLZMQ5Hw5JLaTRZp0yILA/FRexe19VdI="
mdb:
version: "4.20.0"
integrity:
css: "sha256-jpjYvU3G3N6nrrBwXJoVEYI/0zw8htfFnhT9ljN3JJw="
js: "sha256-NdbiivsvWt7VYCt6hYNT3h/th9vSTL4EDWeGs5SN3DA="
medium_zoom:
version: "1.0.8"
integrity: "sha256-7PhEpEWEW0XXQ0k6kQrPKwuoIomz8R8IYyuU1Qew4P8="
15 changes: 7 additions & 8 deletions _includes/head.html
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Expand Up @@ -2,37 +2,36 @@
{% include metadata.html %}

<!-- Bootstrap & MDB -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@{{ site.bootstrap.version }}/dist/css/bootstrap.min.css" rel="stylesheet" integrity="{{ site.bootstrap.integrity.css }}" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/mdbootstrap@{{ site.mdb.version }}/css/mdb.min.css" integrity="{{ site.mdb.integrity.css }}" crossorigin="anonymous" />
<link rel="stylesheet" href="{{ '/assets/css/bootstrap.min.css' | relative_url | bust_file_cache }}">
<link rel="stylesheet" href="{{ '/assets/css/mdb.min.css' | relative_url | bust_file_cache }}">

<!-- Bootstrap Table -->
<link defer rel="stylesheet" href="https://unpkg.com/bootstrap-table@{{ site.bootstrap-table.version }}/dist/bootstrap-table.min.css">

<!-- Fonts & Icons -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@{{ site.fontawesome.version }}/css/all.min.css" integrity="{{ site.fontawesome.integrity }}" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/academicons@{{ site.academicons.version }}/css/academicons.min.css" integrity="{{ site.academicons.integrity }}" crossorigin="anonymous">
<link rel="stylesheet" href="{{ '/assets/css/academicons.min.css' | relative_url | bust_file_cache }}">
<link rel="stylesheet" type="text/css" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Roboto+Slab:100,300,400,500,700|Material+Icons">

<!-- Code Syntax Highlighting -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/jwarby/jekyll-pygments-themes@master/{{ site.highlight_theme_light | append: '.css' }}" media="" id="highlight_theme_light" />
<link rel="stylesheet" href="{{ '/assets/css/jekyll-pygments-themes-github.css' | relative_url | bust_file_cache }}" media="" id="highlight_theme_light" />

{% if page.toc and page.toc.sidebar %}
<!-- Sidebar Table of Contents -->
<link href="https://cdn.rawgit.com/afeld/bootstrap-toc/v1.0.1/dist/bootstrap-toc.min.css" rel="stylesheet" />
<link href="{{ '/assets/css/bootstrap-toc.min.css' | relative_url | bust_file_cache }}" rel="stylesheet" />
{% endif %}

<!-- Styles -->
{% if site.icon.size <= 4 %}
<link rel="shortcut icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>{{ site.icon }}</text></svg>">
{% elsif site.icon != blank %}
<link rel="shortcut icon" href="{{ site.icon | prepend: '/assets/img/' | relative_url}}"/>
<link rel="shortcut icon" href="{{ site.icon | prepend: '/assets/img/' | relative_url | bust_file_cache}}"/>
{% endif %}
<link rel="stylesheet" href="{{ '/assets/css/main.css' | relative_url | bust_css_cache }}">
<link rel="canonical" href="{{ page.url | replace:'index.html','' | absolute_url }}">

<!-- Dark Mode -->
{% if site.enable_darkmode %}
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/jwarby/jekyll-pygments-themes@master/{{ site.highlight_theme_dark | append: '.css' }}" media="none" id="highlight_theme_dark" />
<link rel="stylesheet" href="{{ '/assets/css/jekyll-pygments-themes-native.css' | relative_url | bust_file_cache }}" media="none" id="highlight_theme_dark" />
<script src="{{ '/assets/js/theme.js' | relative_url | bust_file_cache }}"></script>
<script src="{{ '/assets/js/dark_mode.js' | relative_url | bust_file_cache }}"></script>
{% endif %}
4 changes: 2 additions & 2 deletions _includes/scripts/bootstrap.html
Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
<!-- Bootsrap & MDB scripts -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@{{ site.bootstrap.version }}/dist/js/bootstrap.bundle.min.js" integrity="{{ site.bootstrap.integrity.js }}" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/mdbootstrap@{{ site.mdb.version }}/js/mdb.min.js" integrity="{{ site.mdb.integrity.js }}" crossorigin="anonymous"></script>
<script src="{{ '/assets/js/bootstrap.bundle.min.js' | relative_url }}"></script>
<script src="{{ '/assets/js/mdb.min.js' | relative_url }}"></script>
4 changes: 2 additions & 2 deletions _includes/scripts/misc.html
Original file line number Diff line number Diff line change
Expand Up @@ -8,12 +8,12 @@
{%- if site.enable_medium_zoom %}
<!-- Medium Zoom JS -->
<script defer src="https://cdn.jsdelivr.net/npm/medium-zoom@{{ site.medium_zoom.version }}/dist/medium-zoom.min.js" integrity="{{ site.medium_zoom.integrity }}" crossorigin="anonymous"></script>
<script defer src="{{ '/assets/js/zoom.js' | relative_url }}"></script>
<script defer src="{{ '/assets/js/zoom.js' | relative_url | bust_file_cache }}"></script>
{%- endif -%}

{% if page.toc and page.toc.sidebar %}
<!-- Sidebar Table of Contents -->
<script defer src="https://cdn.rawgit.com/afeld/bootstrap-toc/v1.0.1/dist/bootstrap-toc.min.js"></script>
<script defer src="{{ '/assets/js/bootstrap-toc.min.js' | relative_url | bust_file_cache }}"></script>
{% endif %}

<!-- Bootstrap Table -->
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5 changes: 3 additions & 2 deletions _sass/_variables.scss
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,6 @@
* To adjust anything, simply edit the variables below and rebuild the theme.
******************************************************************************/


// Colors
$red-color: #FF3636 !default;
$red-color-dark: #B71C1C !default;
Expand Down Expand Up @@ -31,8 +30,10 @@ $grey-900: #212529;
$white-color: #ffffff !default;
$black-color: #000000 !default;


// Theme colors

$code-bg-color-light: rgba($purple-color, 0.05);
$code-bg-color-dark: #2c3237 !default;

// Font awesome location
$fa-font-path: "../webfonts";
153 changes: 153 additions & 0 deletions _sass/font-awesome/_animated.scss
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@@ -0,0 +1,153 @@
// animating icons
// --------------------------

.#{$fa-css-prefix}-beat {
animation-name: #{$fa-css-prefix}-beat;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, ease-in-out);
}

.#{$fa-css-prefix}-bounce {
animation-name: #{$fa-css-prefix}-bounce;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, cubic-bezier(0.280, 0.840, 0.420, 1));
}

.#{$fa-css-prefix}-fade {
animation-name: #{$fa-css-prefix}-fade;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, cubic-bezier(.4,0,.6,1));
}

.#{$fa-css-prefix}-beat-fade {
animation-name: #{$fa-css-prefix}-beat-fade;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, cubic-bezier(.4,0,.6,1));
}

.#{$fa-css-prefix}-flip {
animation-name: #{$fa-css-prefix}-flip;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, ease-in-out);
}

.#{$fa-css-prefix}-shake {
animation-name: #{$fa-css-prefix}-shake;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, linear);
}

.#{$fa-css-prefix}-spin {
animation-name: #{$fa-css-prefix}-spin;
animation-delay: var(--#{$fa-css-prefix}-animation-delay, 0s);
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 2s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, linear);
}

.#{$fa-css-prefix}-spin-reverse {
--#{$fa-css-prefix}-animation-direction: reverse;
}

.#{$fa-css-prefix}-pulse,
.#{$fa-css-prefix}-spin-pulse {
animation-name: #{$fa-css-prefix}-spin;
animation-direction: var(--#{$fa-css-prefix}-animation-direction, normal);
animation-duration: var(--#{$fa-css-prefix}-animation-duration, 1s);
animation-iteration-count: var(--#{$fa-css-prefix}-animation-iteration-count, infinite);
animation-timing-function: var(--#{$fa-css-prefix}-animation-timing, steps(8));
}

// if agent or operating system prefers reduced motion, disable animations
// see: https://www.smashingmagazine.com/2020/09/design-reduced-motion-sensitivities/
// see: https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion
@media (prefers-reduced-motion: reduce) {
.#{$fa-css-prefix}-beat,
.#{$fa-css-prefix}-bounce,
.#{$fa-css-prefix}-fade,
.#{$fa-css-prefix}-beat-fade,
.#{$fa-css-prefix}-flip,
.#{$fa-css-prefix}-pulse,
.#{$fa-css-prefix}-shake,
.#{$fa-css-prefix}-spin,
.#{$fa-css-prefix}-spin-pulse {
animation-delay: -1ms;
animation-duration: 1ms;
animation-iteration-count: 1;
transition-delay: 0s;
transition-duration: 0s;
}
}

@keyframes #{$fa-css-prefix}-beat {
0%, 90% { transform: scale(1); }
45% { transform: scale(var(--#{$fa-css-prefix}-beat-scale, 1.25)); }
}

@keyframes #{$fa-css-prefix}-bounce {
0% { transform: scale(1,1) translateY(0); }
10% { transform: scale(var(--#{$fa-css-prefix}-bounce-start-scale-x, 1.1),var(--#{$fa-css-prefix}-bounce-start-scale-y, 0.9)) translateY(0); }
30% { transform: scale(var(--#{$fa-css-prefix}-bounce-jump-scale-x, 0.9),var(--#{$fa-css-prefix}-bounce-jump-scale-y, 1.1)) translateY(var(--#{$fa-css-prefix}-bounce-height, -0.5em)); }
50% { transform: scale(var(--#{$fa-css-prefix}-bounce-land-scale-x, 1.05),var(--#{$fa-css-prefix}-bounce-land-scale-y, 0.95)) translateY(0); }
57% { transform: scale(1,1) translateY(var(--#{$fa-css-prefix}-bounce-rebound, -0.125em)); }
64% { transform: scale(1,1) translateY(0); }
100% { transform: scale(1,1) translateY(0); }
}

@keyframes #{$fa-css-prefix}-fade {
50% { opacity: var(--#{$fa-css-prefix}-fade-opacity, 0.4); }
}

@keyframes #{$fa-css-prefix}-beat-fade {
0%, 100% {
opacity: var(--#{$fa-css-prefix}-beat-fade-opacity, 0.4);
transform: scale(1);
}
50% {
opacity: 1;
transform: scale(var(--#{$fa-css-prefix}-beat-fade-scale, 1.125));
}
}

@keyframes #{$fa-css-prefix}-flip {
50% {
transform: rotate3d(var(--#{$fa-css-prefix}-flip-x, 0), var(--#{$fa-css-prefix}-flip-y, 1), var(--#{$fa-css-prefix}-flip-z, 0), var(--#{$fa-css-prefix}-flip-angle, -180deg));
}
}

@keyframes #{$fa-css-prefix}-shake {
0% { transform: rotate(-15deg); }
4% { transform: rotate(15deg); }
8%, 24% { transform: rotate(-18deg); }
12%, 28% { transform: rotate(18deg); }
16% { transform: rotate(-22deg); }
20% { transform: rotate(22deg); }
32% { transform: rotate(-12deg); }
36% { transform: rotate(12deg); }
40%, 100% { transform: rotate(0deg); }
}

@keyframes #{$fa-css-prefix}-spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}

20 changes: 20 additions & 0 deletions _sass/font-awesome/_bordered-pulled.scss
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@@ -0,0 +1,20 @@
// bordered + pulled icons
// -------------------------

.#{$fa-css-prefix}-border {
border-color: var(--#{$fa-css-prefix}-border-color, #{$fa-border-color});
border-radius: var(--#{$fa-css-prefix}-border-radius, #{$fa-border-radius});
border-style: var(--#{$fa-css-prefix}-border-style, #{$fa-border-style});
border-width: var(--#{$fa-css-prefix}-border-width, #{$fa-border-width});
padding: var(--#{$fa-css-prefix}-border-padding, #{$fa-border-padding});
}

.#{$fa-css-prefix}-pull-left {
float: left;
margin-right: var(--#{$fa-css-prefix}-pull-margin, #{$fa-pull-margin});
}

.#{$fa-css-prefix}-pull-right {
float: right;
margin-left: var(--#{$fa-css-prefix}-pull-margin, #{$fa-pull-margin});
}
43 changes: 43 additions & 0 deletions _sass/font-awesome/_core.scss
Original file line number Diff line number Diff line change
@@ -0,0 +1,43 @@
// base icon class definition
// -------------------------

.#{$fa-css-prefix} {
font-family: var(--#{$fa-css-prefix}-style-family, '#{$fa-style-family}');
font-weight: var(--#{$fa-css-prefix}-style, #{$fa-style});
}

.#{$fa-css-prefix},
.#{$fa-css-prefix}-classic,
.#{$fa-css-prefix}-sharp,
.fas,
.#{$fa-css-prefix}-solid,
.far,
.#{$fa-css-prefix}-regular,
.fab,
.#{$fa-css-prefix}-brands {
-moz-osx-font-smoothing: grayscale;
-webkit-font-smoothing: antialiased;
display: var(--#{$fa-css-prefix}-display, #{$fa-display});
font-style: normal;
font-variant: normal;
line-height: 1;
text-rendering: auto;
}

.fas,
.#{$fa-css-prefix}-classic,
.#{$fa-css-prefix}-solid,
.far,
.#{$fa-css-prefix}-regular {
font-family: 'Font Awesome 6 Free';
}

.fab,
.#{$fa-css-prefix}-brands {
font-family: 'Font Awesome 6 Brands';
}


%fa-icon {
@include fa-icon;
}
7 changes: 7 additions & 0 deletions _sass/font-awesome/_fixed-width.scss
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@@ -0,0 +1,7 @@
// fixed-width icons
// -------------------------

.#{$fa-css-prefix}-fw {
text-align: center;
width: $fa-fw-width;
}
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