QR codes guides
QR code and barcode guides
A QR code is only useful if it scans on the first try. These guides cover making codes for links, Wi-Fi and contacts, printing them at a size that works, and checking a code before you trust it, all with tools that run in your browser.
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QR codes
A QR code is a link you cannot read. Here is how to see where it goes before you open it
Stuck on a parking meter, printed on a flyer, tucked into a letter: you cannot tell by looking. You can read what the code holds first, and you can learn when to skip it.
All QR codes guides
QR codes
Retail barcodes are not made up, and an invalid one will not scan. Here is how to make one that does
Which format fits which job, what the check digit does, who actually issues shop numbers, and the print size, blank border and contrast a scanner needs.
QR codes
The QR code on the poster stopped working. Here is why, and how to make one that lasts
Often the printed squares are fine. The code pointed at someone else's redirect, or the page moved, or it was hard to scan. Here is how to avoid all three.
Free QR codes & barcodes
Barcode Generator
Make a Code 128, Code 39, EAN-13, UPC-A, EAN-8 or ITF-14 barcode with the check digit added.
Opens Numbers and text · Saves PNG, SVG
Open toolBarcode Scanner
Read EAN, UPC, Code 128, Code 39, ITF and other barcodes from a picture or the camera.
Opens PNG, JPG, WebP, camera · Saves Text
Open toolQR Code Generator
Make a QR code for a link, text, Wi-Fi, contact, email, SMS, phone, location or event.
Opens Links, text, Wi-Fi, contacts, events · Saves PNG, SVG, PDF
Open toolQR Code Scanner
Scan a QR code from a picture or the camera, see what it holds and check links before opening them.
Opens PNG, JPG, WebP, camera · Saves Text, contact, event
Open tool