Contact us
On this page
One address for everything, read by the people who maintain the site: [email protected]. There is no phone line and no live chat. We aim to reply within a few working days.
Reporting a code that will not scan
These get looked at first. Because the tools run entirely in your browser, we cannot see what you generated — so a report without detail is one we cannot act on. Please include:
- Which tool, and the page URL.
- The exact input you used, if it is not sensitive. Never send a real Wi-Fi password — say "WPA2, 18-character password with an ampersand in it" instead.
- The settings: size, error-correction level, colours, whether a logo was added.
- What you scanned it with — phone model, camera app or scanner, and whether it was on screen or printed.
- If printed: the printer type, the paper or label stock, and the physical size of the code.
Before you write, it is worth running through why is my QR code not working? — most failures come down to size, contrast, a missing quiet zone or a logo covering too much of the pattern, and the guide will tell you which one in a couple of minutes.
Reporting a wrong check digit or an invalid barcode
Send the full number you entered, the symbology, and the digit you expected. We verify against the published specification — the GS1 General Specifications for GTIN check digits, ISO 2108 for ISBN, ISO 3297 for ISSN — rather than against another online generator. If a value is wrong, it is fixed in the shared check-digit module, a regression test is added so it cannot come back, and the fix is listed in the changelog.
Requesting a symbology or a feature
Tell us the format name and where you need it accepted. We are deliberately conservative here: the methodology page lists formats we have chosen not to ship, because a barcode that looks right and fails in a supply chain is worse than one we never offered.
Privacy questions
Mark the subject line "Privacy". We hold no accounts and none of the content you encode, so most data requests have a short answer — the privacy policy sets out what the analytics and advertising scripts do collect and how to opt out of each.
Accessibility problems
If a tool is unusable with a screen reader, with the keyboard alone, or at high zoom, please say which page, which assistive technology and what happened. These are treated as bugs, not suggestions.
Why there is no contact form
The site is fully static — there is no server to receive a form submission. Rather than show a form that silently fails, or route your message through a third-party service that would collect your details, we use a direct email link. It is one fewer party handling your message.