Barcode Reader (Image / Camera)

About this tool

Decode barcodes from image files or your device camera. Code 128 and EAN-13 are enabled by default and the detection area covers the entire frame. Candidate codes and confidence are overlaid, and the preview frame glows when a code is committed. EAN-13, EAN-8, and UPC-A results go through checksum validation to reduce false hits. All processing happens entirely in your browser (no data is sent).

Idle

Tip: keep the code level and ensure good lighting.

Drag and drop an image here, choose one via the button below, or paste from the clipboard.

Basics Input mode

In camera mode use the toolbar above the preview to start, stop, or reinitialize.

Symbologies

Code128 EAN-13 EAN-8 UPC-A UPC-E Code39 ITF

Analysis options

Overlay

Show candidate boxes and lines over the preview. Central band

Limit detection to the center strip to reduce false positives. Duplicate lockout (ms) Wait this long before recording the same code again. Confirmation frames Commit when the code matches consecutively for the specified count.

Notifications & logging

Extra metadata

Record a sequence number and detection time with each result. localStorage

Store your settings in the browser and restore them next time.

Camera settings

Camera

Camera names appear after granting permission in an HTTPS environment. Prefer rear camera

Use the rear camera when available. Beep

May not play depending on the browser's audio restrictions. Vibrate

Only available on supported devices.

Results

How to use

Choose Image or Camera under input mode and adjust symbologies or duplicate suppression as needed.
In image mode load a file with Choose image then press Scan. In camera mode select a camera and press Start.
Detected codes are appended to the results area. Use Copy, Clear, or Save as needed.
Enable localStorage to keep your settings. Stop or reinitialize when you are done.

Notes

Camera access requires HTTPS and permission. If the browser denies access the device list remains empty.
Poor lighting or focus reduces accuracy. Keep the code level and brighten the scene for stability.
Beep and vibration work only on supported devices and may be blocked by browser restrictions.
Settings saved to localStorage stay in the same browser. Disable the toggle to clear them on shared machines.