ZenovayTools

QR Code Scanner

Scan QR codes from uploaded images. Decode URLs, text, Wi-Fi credentials, vCards, and more. Works offline — no camera or server needed.

Upload an image with a QR code

PNG, JPG, GIF, WebP — or paste from clipboard (Ctrl+V)

All processing happens in your browser. No images or data are sent to any server.

How to Use QR Code Scanner

  1. 1Upload an image containing a QR code.
  2. 2The QR code is automatically detected and decoded.
  3. 3See the decoded content (URL, text, Wi-Fi, etc.).
  4. 4Copy the decoded data or open URLs directly.
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Frequently Asked Questions

How does QR code scanning work without a camera?▾
This tool uses the jsQR library algorithm to detect and decode QR codes from static images. When you upload an image, it is drawn on an HTML5 canvas, and the pixel data is analyzed for QR code patterns (finder patterns, alignment patterns, data modules). The decoding happens entirely in your browser — no camera, no server, no internet connection needed after the page loads.
What types of data can QR codes contain?▾
QR codes can encode: URLs (most common), plain text, Wi-Fi credentials (WIFI:T:WPA;S:NetworkName;P:Password;;), vCard contacts, calendar events (BEGIN:VEVENT), email addresses (mailto:), phone numbers (tel:), SMS messages (smsto:), geographic coordinates (geo:), Bitcoin addresses, and more. The maximum data capacity is 7,089 numeric characters or 4,296 alphanumeric characters.
What QR code versions are supported?▾
QR codes come in versions 1 to 40, where each version has a larger grid. Version 1 is 21x21 modules, version 40 is 177x177 modules. This scanner supports all standard QR code versions. It also handles error correction levels L (7%), M (15%), Q (25%), and H (30%). Higher error correction means the code can be partially damaged and still readable.
Why is my QR code not scanning?▾
Common issues: 1) Image is too blurry or low resolution — try a clearer photo. 2) QR code is partially cut off — ensure the full code including the quiet zone (white border) is visible. 3) Image is rotated or skewed — crop and straighten it. 4) It is not a standard QR code (it might be a Data Matrix, Aztec, or PDF417 barcode). 5) Heavy logo overlay obscuring too many modules.
Is this tool private and secure?▾
Yes. The image is processed entirely in your browser using the Canvas API. No data is uploaded to any server. The decoded content is only displayed on your screen. This is important for scanning QR codes that may contain sensitive information like Wi-Fi passwords, authentication tokens, or private URLs.