Does this work on iPhones?

Yes — iOS 11 and later recognize the standard WiFi QR format and offer a "Join Network" tap. Android has supported it natively since Android 10 and via Google Lens for longer.

Is my password sent anywhere?

No. The encoder runs entirely in this browser. The string and the resulting image stay local until you choose to download or share them.

What about WPA-Enterprise (802.1X)?

Not supported by the standard WiFi QR format — those networks need certificates and per-user credentials that do not fit into a static QR. This tool is for home / guest / café networks.

PLATE 03

SCALE 1 : 1

EDITION v0.26.10

FILE KMK·QR·03

FIGURE A · WIFI ENCODE

Free WiFi QR code generator

Encode an SSID, password, and security type into a QR code so guests can join your network with a single scan. Generated locally — credentials never leave your browser.

Create QR code

process: client-side · zero upload
cost: free · no signup · no expiry
format: PNG · SVG · PDF
license: MIT · open source

§01

Notes on the artifact

A WiFi QR code carries the SSID, password, security type, and a hidden-network flag in a standard format that iOS and Android camera apps both recognize. When scanned, the phone offers to join the network — no typing required. This is the same format printed on the side of many home routers.

The format is plain text — anyone who scans the QR can read the password by feeding the decoded string to a parser. That is fine for a guest WiFi sticker by your front door, less fine for a corporate network. Treat the printed QR like the printed password.

For most networks, leave the security type at WPA — it covers WPA, WPA2, and WPA3. Choose WEP only if you have a legacy router. Choose None for an open network with no password. Hidden networks need the box checked so the phone knows to probe for the SSID actively.

§02

Footnotes & queries

Does this work on iPhones?: Yes — iOS 11 and later recognize the standard WiFi QR format and offer a "Join Network" tap. Android has supported it natively since Android 10 and via Google Lens for longer.
Is my password sent anywhere?: No. The encoder runs entirely in this browser. The string and the resulting image stay local until you choose to download or share them.
What about WPA-Enterprise (802.1X)?: Not supported by the standard WiFi QR format — those networks need certificates and per-user credentials that do not fit into a static QR. This tool is for home / guest / café networks.

§03

Anatomy of the code

QR ANATOMY FUNCTIONAL REGIONS DRAFTING SCHEMATIC

Every QR code is a part-functional, part-data grid. Three finder patterns at the corners let a scanner lock orientation; an alignment pattern at the bottom-right corrects perspective skew when the code is photographed at an angle. The timing patterns — alternating modules running between the finders — tell the scanner the cell pitch. Format info encodes the error-correction level and mask pattern across 15 bits arranged in an L-shape. The rest of the grid is the payload — data plus Reed–Solomon error-correction codewords. The quiet zone is mandatory whitespace; without four clear modules of margin, scanners reject the code. The detail below the main figure shows the finder pattern's 1·1·3·1·1 ring construction — proportions deliberately chosen so a scanner can recognise the pattern at any rotation, with three patterns at three corners triangulating the code's orientation.

§04