QR Code Guides
Work through a real publishing task: prepare the destination, inspect what the image contains, test the result, and diagnose failures. Examples describe the tools available on this site.
From a link to a working QR code: a publishing walkthrough
Choose the correct destination, inspect the encoded value, and test access before you put a QR code on a sign.
Read guide →Create and troubleshoot a guest Wi-Fi QR code
A worked Wi-Fi example, password handling, and a diagnosis checklist for a code that scans but will not connect.
Read guide →Diagnose a QR scan failure without guessing
Separate image recognition, payload interpretation, and destination access; use camera or image upload to narrow down failures.
Read guide →Choose between a contact QR and a hosted business card
Compare embedded vCard contacts with URL-based business cards, including which fields are supported, what is shared, and what can change.
Read guide →Prepare a QR code for print: border, size, color, and logo
A print preparation workflow with an explicit pixel-to-paper calculation and checks for the exported artwork.
Read guide →Publish a restaurant menu or PDF that guests can actually open
A worked menu workflow covering public access, stable URLs, mobile readability, and replacement files.
Read guide →What can change after a QR code is printed?
Understand embedded content, stable web addresses, redirect services, local projects, and browser-enforced expiry.
Read guide →Set up a WhatsApp QR with the right number and message
Build a click-to-chat link, inspect the generated number, and test the recipient and optional message before printing.
Read guide →Generate a batch of QR labels and keep each one traceable
Prepare one value per line, match numbered PNG files to their sources, spot-check the batch, and avoid losing earlier local history.
Read guide →Put an event on a QR code without getting the time wrong
What the event payload contains, why it has no time zone or end time, and how to test calendar import before printing invitations.
Read guide →Offer up to three links from one printed QR code
How the multi-link page stores its links in the URL, what visitors see, why it cannot be edited after printing, and when your own page is better.
Read guide →