About
About this site
What this site is, how it works technically, and the standards the guides are held to.
QR Code Builder is a free QR code generator run independently by one person, not a company. Encoding runs entirely in the visitor's browser using an open-source implementation of ISO/IEC 18004, and the guides are checked against that specification rather than compiled from other websites.
The problem it solves
Most free QR code generators do not encode your link. They encode a short URL on their own domain and redirect to you. That is convenient until the trial ends, the pricing changes or the company closes, at which point every code already printed stops working. Ink on paper cannot be updated.
This generator encodes your destination directly into the pattern. There is no redirect, no account and no server involved, so a code you download today keeps working regardless of what happens to this website.
The trade-off is stated openly throughout the site: you get no scan analytics and you cannot change the destination after printing. Where those matter, the guides explain how to build a redirect on a domain you control rather than renting one.
Technically, in full
- Encoding uses an open-source JavaScript implementation of ISO/IEC 18004, running in your browser. Nothing you type is transmitted.
- Decoding on the reader page uses jsQR, also client-side. Uploaded images are read locally and never sent anywhere.
- The site is static HTML. There is no application server, no database and no user accounts.
- There are no analytics scripts, no advertising, no tracking pixels and no third-party embeds beyond a webfont.
- The capacity figures published in the reference data were derived by binary search against the encoder and cross-checked against the published standard, rather than copied from other sites.
How the guides are written
Every guide is checked against ISO/IEC 18004 or against the behaviour of real devices and printers. Where we do not know something, the page says so. Where a claim is contested — scan rates, adoption figures, the marketing statistics that circulate without primary sources — we leave it out rather than repeat it.
Guides carry a last-reviewed date, and the review is real: figures, links and platform behaviour are re-checked, and pages that no longer reflect how phones actually behave get rewritten rather than quietly patched. The pages that no longer reflect how phones actually behave get rewritten rather than quietly patched.
The comparison pages include competitors, and the generator comparison lists cases where you should use a different tool. A comparison that never recommends anyone else is an advertisement. Our disclosure page sets out who funds this site and how competitors are assessed.
Details
| Run by | An individual, not a company |
| Website | qr-code-build.com |
| Contact | contact@qr-code-build.com |
| Started | 2026 |
| Funding | None — no ads, no affiliates, no paid tier |
Frequently asked
Who runs QR Code Builder?
Is the generator open source?
Do you collect any data?
Can I suggest a feature or report a problem?
Last reviewed 24 August 2026 · Checked by the QR Code Builder team