Here are my answers:
- Minify CSS with Lightning CSS or DuckDuckGo CSS Minifier.
- Minify HTML with HTML Minifier. You can use HTML Minifier in your browser.
- Minify JavaScript with Terser. You can use Terser in your browser.
- Reduce the image file size with Squoosh.
- Resize the image—for example, from 3000x200 to 1500x100—for all decorative images to reduce the image file size.
- Prefer using SVG over raster graphics. Raster graphics are files with an ending such as
.png
,.jpg
, or.jpeg
. - When using raster graphics, offer better image compression, such as AVIF and WebP, with the
<picture>
element. - Minify SVG with SVGOMG.
- Reduce the file size of custom fonts by importing the necessary characters only through the Google Fonts API. For example, we want to use a lowercase "h" of Roboto, so we add
text=h
to the Google Fonts API request. Usually, we only need alphabets, numbers, and common punctuation marks.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!"#$%&'()*+,-—–./:;<=>?@[]^_`{|}~
- Use Web Open Font Format (WOFF) files. Use
.woff2
format. - Use the
<link>
tag for importing Google Fonts. Do not use@import
. - Prefer downloading the Google Fonts
woff2
files and hosting your font within your website's domain. For example, if your website domain isexample.com
, your font may be located atexample.com/fonts/roboto-regular.woff2
. Simply, self-host your fonts. - Sort CSS properties for better GZIP compression. (optional)
- Sort elements inside your HTML head with the following order:
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <title> <link> <meta> <script> <noscript>
- Delete unnecessary images.
- Delete unnecessary code.
- Just have fewer things on your website.
- Convert videos into WebM format.
- Prefer using Modern Font Stacks or pre-installed fonts.
- Avoid heavy CSS frameworks. (Don't make me mention Bootstrap.)
- Agree to have a fast website.
- Prefer text over images, unless you are making a comic or a photo gallery.
- Use a lighter website analytics, instead of Google Analytics. If you do not need it, do not have it.
- Prefer simple layouts. Use CSS flexbox and grid for a responsive layout with very few media queries or even none at all.
- Use Utopia to generate fluid size and fluid space. This prevents your from maintaining media queries.
- Simplify, simplify, simplify.
- Be normal.