Local browser computer vision

See what face-api.js can do.

Detect faces, map landmarks, try a basic presence interaction, and compare two images without sending camera frames to a server.

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Local processing No API key · No image storage

Demo only: This is an educational face detection and similarity demonstration. It is not secure liveness detection, identity verification, KYC, fraud prevention, or an access decision.

Live camera

Detection workspace

Camera stopped

◌ Camera preview Start the camera to begin local analysis.

Active presence Try a basic challenge after starting the camera.

Controls

Analysis settings

Detector Input size Score threshold 0.50 Analysis interval 150 ms Demo comparison threshold 0.50

Draw face box Draw confidence Draw landmarks Draw expressions Mirror preview

Technical view

Metrics

Model load: —
Detector: Tiny / 320
Faces found: 0
Latest inference: —
Average inference: —
Analysis FPS: —
Camera resolution: —
Descriptors: Reference — / Query —
Challenge: Idle

Face comparison

Reference vs. query

Reference imageNot selected

Choose image

Try a sample:

Query selfieNot captured

Use “Capture selfie” above or choose a reference-style image during testing.

Similarity distance—

Demo threshold0.50

Demo resultWaiting for two usable faces

Lower distance generally means greater similarity. This threshold is configurable for demonstration and is not a production or KYC threshold.

Local activity

Event log

--:--:--Waiting to load face models

The log contains status only. It never records images, descriptors, or camera frames.