A new kind of document
Most written communication is flat. Every word carries the same visual weight, leaving the reader to decide what matters — often while distracted, skimming, or reading only once.
ShimmerText changes that. An AI reads your writing and marks its structure. Core concepts surface in gold. Central claims in silver-blue. Tension and caveats in rose. Evidence in sage. Resolution in violet. Most words stay plain — because most words are furniture. The colors mark the load-bearing walls.
The result is a document that tells you how to read it.
Follow the color as a guide. Let your eye go to gold first. Understand the claim. Feel the tension. See how it resolves.
Switch to Quiz mode and the colors disappear. Tap any word to reveal what the AI considered important. A way to reread without rereading — to check whether you caught what mattered.
Click any highlighted concept for a brief AI-generated note — written by the sender's AI, curated by the sender. Exposition on demand, invisible until needed.
ShimmerText is a tool built by Daniel Belz — physician, researcher, and instrument-maker. It grew out of a simple frustration: that the most important ideas in a letter, a proposal, or an argument are usually buried in plain text, indistinguishable from everything around them.
The shimmer makes them visible.
Paste, type, or speak your text — then shimmer and share when ready.