About — facetestlab.com

facetestlab.com is a free measurement page. You give it one front-facing photo, it finds 478 facial landmarks in your own browser, and it reports eight geometric ratios built from those landmarks. Every formula and every landmark coordinate it used is printed on the page next to the value it produced, so none of the arithmetic is hidden.

Who runs this

This site is run under the name facetestlab.com and nothing else. There is no company behind it, no team, and no real name published here. There is no account system, no newsletter and no advertising on the site today.

What the tool actually does

The page loads a face-landmark model into your browser once, then uses it to locate 478 points on the face in the photo you chose. From those points it computes eight ratios — things like face length to width, interocular distance to face width, and bilateral symmetry. Each ratio is compared against a stated reference band, and the closeness values are combined into a single 0–100 figure using weights you can change yourself on the page.

The reference bands come from classical proportion canons, for example face length to width against phi (1.618). Those canons are descriptive geometry traditions, not a validated measure of how attractive a person is. The width of each band is this page's own choice, not a published standard, and the band scale control on the tool page shows exactly how much of the final number comes from the strictness of those bands.

What it is not

• It is not a rating of a person. The number is a distance between the geometry of one photograph and a set of stated reference bands.
• It does not claim any accuracy figure, any percentage of correctness, or any match against a trained model of human judgement. No such figure appears anywhere on this site because none has been measured.
• It is not a diagnosis, an assessment or advice of any kind. It is a geometry readout with the arithmetic shown.
• A different photo of the same face — different angle, lens, lighting or expression — produces different numbers. That is why the raw measured values, not the composite, are the ones to read.

How your photo is handled

The photo is read and measured inside your browser tab. It is not uploaded to a server, and this site has no server that accepts images. The full detail is on the privacy page.

Where this was built and tested

The site is a plain static folder served as-is. The tool page was driven end to end in Chrome 154 and Edge 154 on Windows — photo in, 478 landmarks, eight measurements, all three exports out. Firefox 155 was tested the same way and does not work: the landmark engine aborts inside its WebAssembly module there, on every build tried and on both compute paths, so the tool reports that instead of returning a number. Other browsers have not been tested.

Contact

Write to [email protected], or see the contact page.