Tonsky Blog offers insights, essays, and discussions on programming languages, software design, and user interface development. Covering topics such as functional programming, ergonomic code editors, and interactive user experiences, Tonsky Blog provides resources for developers and design enthusiasts. Readers can explore unconventional ideas in software development, delve into the principles of good design, and challenge conventional wisdom through Tonsky's blog posts and reflections.

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A critique of imprecise UI animations and how they erode user trust. Using real-world examples from Safari, YouTube, Photos, and Preview, the author argues that every frame of an animation must make sense in isolation — not just the start and end states. Desynchronized, janky, or inconsistent animations signal poor craftsmanship and undermine confidence in the overall product quality.

Every Frame Perfect

I like this argument that by making the mid-frames smoother then entire animation looks smoother. However I think some examples of a “perfect” animation would help drive the point better rather than just where it’s wrong.

Bright yellow screen definitely eroded my trust!

That Safari cursor is impossible to unsee once you slow it down. Good article, thanks.

Micro-interactions quietly communicate product quality.

i was hoping u would provide an example of a good animation