Barcode Decoder
Decode barcodes from images directly in your browser.
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What is Barcode Decoder?
The Barcode Decoder reads machine-readable barcodes straight from images in your browser. Drop in a photo of a product label, package or ticket and the ZXing engine identifies the format — EAN-13, UPC-A, Code 128, Code 39, ITF, Codabar, QR Code and more — then extracts the encoded value and validates the check digit where one applies.
Key Benefits
- Private by design: images are decoded locally and never uploaded
- Wide format coverage for retail, warehouse and event-ticketing barcodes
- Check-digit validation catches damaged or misread codes
- Free and unlimited with no account or watermark
Common Use Cases
- •Verifying a product code printed on packaging before listing it online
- •Reading inventory or asset tags from photos taken in a warehouse
- •Extracting numbers from tickets or shipping labels without a handheld scanner
- •Checking whether a barcode image renders correctly after design changes
How to Use the Barcode Decoder
- Upload an image: Drag a PNG, JPG or WebP photo of the barcode into the upload box, or click Browse image to pick a file.
- Wait for decoding: The tool converts the image to grayscale and scans it with the ZXing engine, retrying rotated orientations when needed.
- Review the result: The decoded value, the detected barcode format and the check-digit verdict appear below the image preview.
- Copy the value: Click Copy to send the decoded text to your clipboard, or Clear to decode another image.
Key Features
- Decodes EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, ITF and Codabar from images
- Runs 100% in your browser with the ZXing engine — images never leave your device
- Validates the GTIN check digit for retail codes like EAN and UPC
- Retries rotated photos at 90, 180 and 270 degrees automatically
- Drag-and-drop upload with image preview and one-click copy
- Also reads 2D formats including QR Code and Data Matrix
Frequently Asked Questions
Which barcode formats can this tool read?
It decodes all common 1D retail and logistics formats including EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, Code 93, ITF and Codabar, plus 2D formats such as QR Code and Data Matrix.
Are my images uploaded to a server?
No. Decoding runs entirely in your browser with the ZXing JavaScript engine. The image is read locally with the File API and never leaves your device.
Why does my barcode fail to decode?
Blurry photos, low contrast, glare, or barcodes that occupy only a small part of the image are the usual causes. Try a sharper photo, crop tightly around the barcode, or increase contrast before uploading again.
What does the check digit verdict mean?
Retail codes like EAN and UPC end with a check digit computed from the preceding digits. The tool recalculates it and reports valid or invalid, which catches misreads and mistyped product codes.