Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

Do I need to install any software to use NanoTools?

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

What file formats are supported?

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

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Face Detection Online - Detect Faces in Images

Detect faces in images online for free. Identify faces in photos using AI. Mark and count detected faces.

Drop an image here or click to browse

image/* • Max 50MB

What This Tool Does

Detects multiple faces in a single image
Highlights face locations with bounding boxes
Counts the number of faces found
Provides coordinate data for each detected face
Works with various angles and lighting conditions
Processes images privately in your browser

How to Use

1
Upload image
Select a photo containing one or more faces
2
Run detection
Click detect to automatically identify all faces
3
View results
See highlighted faces with bounding boxes and coordinates
4
Export data
Download the annotated image or face coordinate data

How it works

Upload image

Select a photo containing one or more faces

Run detection

Click detect to automatically identify all faces

View results

See highlighted faces with bounding boxes and coordinates

Export data

Download the annotated image or face coordinate data

Use Cases

Organizing photo libraries by automatically tagging portraits
Cropping profile pictures by centering detected faces
Building automatic photo booth applications
Creating face-aware image filters and effects
Validating ID photos for proper face positioning
Counting people in group photos automatically

Frequently Asked Questions

How accurate is the face detection?

Detection works well with clear, front-facing images. Accuracy decreases with extreme angles, low light, or obstructed faces.

Can it identify specific people?

No, this tool only detects face locations, not identity. It does not perform facial recognition or identification.

Does it work with profile views?

Best results occur with front-facing or near-frontal views. Profile and angled views may have reduced detection rates.

Is the image data stored?

No, all processing happens in your browser. Images are not uploaded or stored on servers.

Can it detect faces in drawings or artwork?

Detection is optimized for photographs. Results with illustrations vary based on realism and detail.