Jose M.
Perez

Jose M. Perez
Jose M. Perez
Spotify
I am a web developer at Spotify who works building open.spotify.com and Spotify's web player. I like web performance optimisation and making sites load (and look) faster.
Jose M. Perez
Jose M. Perez
Spotify
  • 2017

    Progressive Image Rendering
    Vyorstka

    On a regular web page, images represent the largest assets. We might have heard about responsive images to serve the most suitable image for each screen. However, how and when we load them can have a great impact too.

    I will show you several techniques used by well known websites, based on placeholders, dominant colours, blurry images and lazy loading to improve user's perceived performance.

    These techniques leverage several web technologies like CSS3, canvas and the recent IntersectionObserver API.


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