How to Use sensor.fyi to Choose a Mouse

sensor.fyi is a mouse-buying resource built around a simple premise stated on its homepage: the perfect mouse does not exist, but there may be a perfect mouse for you. To use it well, work through three pages in order — Info for the underlying concepts, Sensors for sensor-level reading, and Flawless Mice for a curated shortlist — then match that shortlist against your own grip, hand size, and priorities. The site is a reference, not a recommendation engine, so the final filtering step is yours.

Start with the Info page

The homepage describes Info as the page that "explains all the various aspects of mice." Treat it as the vocabulary layer: it is where the site defines the terms and trade-offs that the other two pages assume you already understand.

Read it first if any of the following is true for you:

• You can't yet say why one mouse shape suits you and another doesn't.
• You don't know which specifications actually affect aiming or comfort, and which are marketing noise.
• You're comparing mice across categories (gaming, vertical, trackball) and don't have shared criteria for them.

If you already know your preferred shape, size, and weight range, you can skim Info and move to the Sensors page.

Use the Sensors page to judge the sensor

The Sensors page is described as "a listing of potentially flawless sensors, and some additional reading materials for those sensors." Two things follow from that wording:

1. It is a list of sensors, not mice. A mouse can appear on the Flawless Mice page only if its sensor clears this bar, but the sensor list alone doesn't tell you whether a given mouse is worth buying.
2. "Potentially flawless" is a qualification, not a guarantee. The site pairs each sensor with further reading so you can check the reasoning rather than take a label at face value.

Practical use: when you're looking at a specific mouse, find its sensor on this page. If it isn't listed, that's a signal to dig further before buying — not proof the sensor is bad.

Use the Flawless Mice page as a shortlist, not a verdict

The Flawless Mice page is "a curated list of mice that are flawless." This is the page most people will jump to, and it's the one most likely to be misread. A curated list reflects the site's criteria and the maintainer's judgment; it does not know your hand size, grip style, or budget.

Use it as a filter in this order:

The homepage is explicit that the site's goal is to help you make an informed purchase, not to pick for you — so step 4 is not optional.

What "flawless" means here

The site uses "flawless" as a defined term with its own page, and it applies it at two levels: individual sensors ("potentially flawless") and whole mice ("flawless"). The distinction matters because a flawless sensor inside a mouse with a shape you dislike still produces a mouse that is wrong for you. Read the dedicated explanation before treating the word as a general quality score.

If something looks wrong or missing

The homepage invites corrections directly: email the maintainer or join the community Discord if you believe information is incorrect or incomplete. That's worth doing if a mouse you're considering is absent from the lists — the site is maintained rather than static, and gaps are treated as fixable rather than final.

A realistic workflow

Say you're choosing between two mice and can't decide. Open Info and write down the three attributes that matter most to you. Open Sensors and confirm both mice use listed sensors. Open Flawless Mice and see whether one, both, or neither appears. If both appear, the site has done its job and the decision is now about your hand and your preferences — which is exactly the outcome the homepage describes.