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Blur-up / LQIP

A blurry hint beats an empty box.

The problem

Images that pop in after loading cause layout jank and a blank gap while you wait.

The solution

A blurred low-quality preview shows immediately, then sharpens.

Experiment

Play with the values

1600ms
16px

How it works

  • The image's aspect ratio is reserved so the layout does not shift when pixels arrive.
  • A tiny blurred preview shows immediately in that box.
  • The full image loads behind or beside that preview.
  • A cross-fade hands off from the blur to the sharp image.
  • The placeholder is removed once the full image is visible.

Seen in

Photo galleries

Thumbnails resolve from a blur, avoiding blank tiles.

Article heroes

Cover images preview instantly, then sharpen in place.

Product images

Store listings show a hint of each image before full load.

Avatars

Profile pictures fade in from a colour or blur placeholder.

References