Zoom Into a Pixel_
Start at the dots on your screen. Fall inward — past subpixels, cells, DNA, an atom, a proton — until you reach a quark and the edge of what physics can measure.
Interactive inward zoom from a screen pixel to a quark
Scroll or drag to fall inward ↓
Below the Planck length, the idea of "distance" may stop meaning anything at all. There's nowhere left to fall.
A journey of roughly 35 powers of ten, from a quarter of a millimetre to 0.0000…16 metres. Take it slowly.
About This Toy
We spend all day staring at screens without ever wondering what we're really looking at. Zoom Into a Pixel answers that, then refuses to stop. It begins at the glowing grid in front of you, dives into a single pixel, splits it into its red, green, and blue subpixels — and then leaves the screen behind entirely, falling through living cells, a strand of DNA, a single atom, the nucleus, a proton, and out the bottom into a quark.
It is the inward mirror of every "size of the universe" tour you've scrolled. Those go outward to galaxies. This one goes the other way, into the very small, until matter itself runs out of structure to show you.
Real numbers
Every object's size is accurate. The readout counts down in metres, micrometres, nanometres, and beyond as you fall.
Steady descent
Each stop is the same visual "distance" apart, so a 35-orders-of-magnitude trip feels like one smooth dive.
Honest about the edge
It doesn't pretend we know the size of a quark. At the bottom it tells you where measurement actually stops.
Free, no signup
Runs entirely in your browser. No account, no download, nothing in the way. Just fall.
How To Use It
- Hover over the black window and scroll down to zoom inward. Scroll up to climb back out.
- On a phone, drag up and down with your finger. Or tap the In and Out buttons on any device.
- Watch the scale readout in the corner. Notice how fast the zeros pile up once you pass the atom.
- Keep going until you reach the quark, then the Planck length — the floor. There's nothing below it to find.
Why This Exists
Scale is the one thing human intuition is genuinely terrible at. We can picture a metre and we can picture a millimetre, and after that the numbers just become words — "nano," "femto" — with no feeling attached. The gap between an atom and the proton inside it is as vast, proportionally, as the gap between a city and a marble in its town square. You can know that fact and still not feel it.
Zoom Into a Pixel tries to give it back a little weight. By making every step the same effort, the trip lets you feel how much emptiness and structure hides below the surface of an ordinary glowing dot — the same dot rendering these very words.
Frequently Asked Questions
What is Zoom Into a Pixel?
Zoom Into a Pixel is a free browser toy that starts at the pixels on your screen and zooms inward — through subpixels, a human hair, cells, a virus, DNA, a single atom, its nucleus, a proton, and finally a quark and the Planck length. It is the inward mirror of journeys that zoom out to the size of the universe.
Is everything to scale?
The sizes shown for each object are real and accurate. The visual jump between each stop is kept roughly equal so the zoom feels steady, but the size readout always tells you the true measurement, from a quarter of a millimetre down to about 10 to the minus 35 metres.
How small is a quark, really?
Nobody knows its exact size. Every experiment so far shows a quark behaving like a point with no measurable width — the upper limit is around 10 to the minus 18 metres, far smaller than the proton that contains it. We treat it as the bottom of ordinary matter.
What is the Planck length?
The Planck length is about 1.6 times 10 to the minus 35 metres, the scale where our current physics stops giving sensible answers about distance. It is not a known smallest object — it is the smallest length the theory can even discuss.
Do I need anything to use it?
No. Zoom Into a Pixel runs entirely in your browser. No download, no signup, no account. Scroll, drag, or use the buttons to fall inward.
Does it work on mobile?
Yes. On a phone or tablet you drag up and down to zoom in and out, or tap the zoom buttons. It works in modern mobile browsers including Chrome, Safari, and Firefox.