Every 1 second of improvement
Up to a 2% conversion increase.
Reduced page load time by 2.2 seconds
Downloads increased by 15.4%
(10 million+ downloads per year)
Today we're including a new signal in our search ranking
algorithms: site speed. Like us, our users place a lot of
value in speed.
We use a variety of sources to determine the speed of a
site relative to other sites.
1) Format & Compression– JPEG for photos, PNG for images with
fewer colours / transparency. Balance file size & aesthetics.
2) Dimensions – What is the maximum width and height at which
the image will be displayed?
3) Replacements – “The fastest HTTP request is the one not made.”
Aim to use fonts for text, vector graphics for logos and shapes, and
CSS effects (shadows, gradients, etc.) wherever possible.
Images: Things to Consider
Read more: https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/image-optimization
Fonts: Things to Consider
Read more: https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/webfont-optimization
1) Typefaces, Weights, Styles – How many are necessary? Weigh
aesthetics against added requests.
2) Hosting – By using externally hosted fonts (such as Google
Fonts or Typekit), there is a greater chance your visitor will
already have the file cached.
Scripts: Things to Consider
1) Unnecessary scripts – Clunky social sharing plugins, etc.
2) Minify + concatenate – Make this a part of your build process.
Don’t use development versions of scripts on live site.
3) Caching – Calling popular scripts like jQuery from a CDN
increases chances of caching.
4) Placement – Investigate your critical rendering path.
Read more: https://developers.google.com/web/fundamentals/performance/critical-rendering-path/adding-interactivity-with-