1. Use the original image or a clear screenshot
Choose a PNG, JPG or WebP image with the whole square and a clear border. A tiny, blurred or cropped code can be difficult to decode. Use the original file where available.
The reader processes the image in the browser. It currently accepts files and clipboard images; it does not provide a camera scanner or read linear UPC/EAN barcodes.
2. Read the result before doing anything else
The decoder shows the data inside the QR. A website QR may contain a complete URL; other codes can contain text, WiFi settings, a mailto link or contact data.
A decoder cannot manufacture an HTTPS page from arbitrary data. If the code contains a URL shortener, that short URL is the encoded result; its eventual redirect destination may be different.
3. Inspect the link safely
Check the full hostname, spelling and expected service before opening a link. HTTPS alone does not establish that a page is trustworthy. Do not enter credentials just because a QR code led you there.
The reader does not open destinations automatically. Use Copy result to retain the decoded text, or deliberately open a supported HTTP/HTTPS link after inspecting it.
4. Do you need the reverse operation?
If you already have a website address and want a QR image, use the URL QR generator instead. That operation turns your chosen link into a code; it does not decode an existing image.
When sharing a QR in an email or online invitation, include a normal clickable link too. Readers on the same phone may find a direct link more convenient.