Drop QR code image here
or click to browse
PNG · JPG · GIF · WebP · BMP · SVG— or paste image URL —
Ready to decode
Upload or paste a QR code image, then click Decode// upload a qr image and extract the encoded content
Upload a QR code image and instantly decode the hidden content. Extract URLs, text, WiFi credentials, contact info, and more. Free, browser-based, no upload to server.
Drop QR code image here
or click to browse
PNG · JPG · GIF · WebP · BMP · SVGReady to decode
Upload or paste a QR code image, then click DecodeDrag and drop a QR code image onto the upload area, click to browse, or paste a direct image URL into the URL field below.
Hit the green "Decode QR Code" button. The tool scans the image entirely in your browser — nothing is sent to a server.
The decoded content appears instantly. Use "Copy" to grab it, or click "Open URL" if the QR encodes a web address.
A QR Code Decoder reads an image file containing a QR (Quick Response) code and extracts the text or data encoded within. Unlike phone camera apps, this tool runs entirely in your browser using the jsQR library — your image never leaves your device.
No. The entire decoding process happens inside your browser using JavaScript. Your image is never transmitted over the network, making this tool safe for sensitive or private QR codes.
The decoder accepts any image format your browser can render: PNG, JPG/JPEG, GIF, WebP, BMP, and SVG. For best results, use a high-resolution PNG with good contrast.
Common causes include a blurry or low-resolution image, a QR code that is too small in the frame, heavy damage or distortion, or excessive rotation. Try cropping the image tightly around the QR code and increasing the image quality.
QR codes can encode plain text, URLs, email addresses, phone numbers, SMS messages, WiFi credentials (SSID + password), vCard contact data, calendar events, and Bitcoin addresses, among other formats.
Yes. Take a screenshot on your device, then upload the screenshot directly. The decoder will scan the full image and find any QR code present within it.
QR code versions define the module grid size. Version 1 is a 21×21 grid holding up to 41 alphanumeric characters. Version 40 is a 177×177 grid holding up to 4,296 alphanumeric characters. Most everyday QR codes are Version 1–10.
A QR code decoder is a software tool that reads a Quick Response (QR) code image and extracts the data encoded within its black-and-white matrix pattern. While smartphone cameras handle this automatically in everyday life, a browser-based decoder is invaluable when you have a QR code image file on your computer and need to inspect its contents without relying on a mobile device.
This tool uses the open-source jsQR library to perform all scanning directly in your browser. The image is drawn onto an HTML5 Canvas element, pixel data is extracted, and the jsQR algorithm locates the finder patterns in the three corners of the QR code before decoding the binary payload into readable text. Because everything happens client-side, no image data ever reaches our servers.
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Every QR code contains three distinct square finder patterns located in the top-left, top-right, and bottom-left corners. The decoder first locates these patterns to determine the orientation and scale of the code. It then samples the grid of modules (the small squares) and converts the light/dark pattern into a binary string. Error correction data (using Reed-Solomon codes) allows the decoder to recover information even if up to 30% of the QR code is damaged or obscured.
The binary payload is split into segments that each specify an encoding mode: numeric (0–9 only), alphanumeric (A-Z, 0–9 and a few symbols), byte (full ISO-8859-1 or UTF-8), or Kanji (double-byte Japanese characters). The decoder reads each segment according to its mode and assembles the final text string.
QR codes are not limited to web URLs. Depending on how they were generated, they can encode a wide variety of data types:
http:// or https:// and links to a website.WIFI:T:WPA;S:NetworkName;P:Password;; — scanning this on a phone will automatically connect to the network.mailto: URI that pre-populates an email compose window.smsto: URI that opens a new SMS message to a specified number.tel: URI that triggers a phone call.geo: URI pointing to a specific latitude and longitude.bitcoin:address?amount=0.01.There are several scenarios where a desktop tool is more convenient than pointing your phone camera at a screen:
The jsQR library is robust, but image quality significantly affects reliability. Follow these tips for consistent results:
QR codes include redundant data based on four error correction levels: L (7% recovery), M (15%), Q (25%), and H (30%). Higher error correction levels make the QR code larger but allow it to be read even if part of it is physically damaged, covered by a logo, or obscured. This is why many branded QR codes with a logo in the center still scan correctly — they are generated at Level H.
Because this tool processes images entirely in your browser, it is safe to use with QR codes containing sensitive information such as WiFi passwords or private URLs. Unlike many online QR scanners, we do not log scanned content, store uploaded images, or transmit any data to a remote API. The decoded result exists only in your browser tab and is cleared when you navigate away.
When scanning unfamiliar QR codes, always inspect the decoded URL before clicking it. Malicious actors sometimes distribute QR codes that lead to phishing sites or trigger automatic downloads. This decoder lets you safely preview the destination before committing to open it.
This tool relies on the jsQR library (MIT license) by Cosmo Wolfe, which implements a pure-JavaScript QR code reading algorithm. The image is rendered to a hidden <canvas> element, and getImageData() extracts raw RGBA pixel data. jsQR then performs binarization and pattern detection on this data. Supported image formats are determined by your browser's built-in image decoding capabilities — all modern browsers support PNG, JPEG, GIF, WebP, and BMP natively.