How to Create a WiFi QR Code for Easy Guest Access

Sharing your WiFi password with guests is a small but persistent annoyance — especially when the password is a 20-character random string that someone inevitably misreads. A WiFi QR code solves this entirely. Guests point their phone camera at the code, tap a banner, and they’re connected. No typing, no squinting, no mistakes.

This guide covers every method: the built-in tools on iPhone and Android, free browser-based generators, and the QR share feature built into many modern routers. We’ll also cover the underlying format so you understand exactly what data is encoded — and how to keep your primary network secure while sharing access.

Before You Start: Set Up a Guest Network

Before generating a QR code, create a dedicated guest network on your router rather than sharing your main network credentials. A guest network isolates visitors from your smart home devices, NAS drives, printers, and other connected equipment. If your router supports it (most do, under “Guest Network” or “Guest WiFi” in the admin panel), enable it with WPA2 or WPA3 security and a unique password.

The QR code you print can then share the guest credentials only. If you ever want to revoke access — after a house party, for example — you just change the guest password and reprint the QR code, leaving your main network untouched.

Method 1: iPhone (iOS 18 and Later)

iOS 18 added a native WiFi QR code generator inside the Passwords app. No third-party tools needed.

1. Open the Passwords app (search for it with Spotlight if you can’t find it).
2. Tap the Wi-Fi section in the sidebar.
3. Select the network you want to share.
4. Tap Show Network QR Code.
5. A QR code appears on screen. You can screenshot it, AirDrop it, or print it directly from the share sheet.

The recipient simply opens their default camera app and points it at the code — Android 10+, iOS 11+, and recent Samsung Camera all connect automatically without needing a separate QR scanning app.

Method 2: Android (Android 10 and Later)

Stock Android and most Android skins include a share-as-QR-code option directly in WiFi settings.

1. Open Settings › Network & Internet › Internet (the path varies slightly by manufacturer).
2. Tap the gear icon next to your connected network, or long-press the network name.
3. Tap Share or the QR code icon.
4. A QR code appears. Your current device must be authenticated (you may need to verify with biometrics or your PIN).

On Samsung One UI, the path is Settings › Connections › Wi-Fi › tap network › QR code. The code can be screenshotted and saved for printing.

Method 3: Free Online Generators

If you need a QR code from a desktop computer, or want more control over the visual design, a browser-based generator is the easiest approach. QiFi.org is a well-regarded option that runs entirely in your browser — your credentials are never sent to a server. Other reputable options include wifiqrcode.com and qr-code-generator.com.

All generators ask for the same three pieces of information:

• Network name (SSID): Case-sensitive. Copy it exactly from your router settings.
• Password: Also case-sensitive. Double-check every character.
• Security type: WPA/WPA2 for most home routers. WPA3 if your router was purchased in the last two or three years. WEP only for very old hardware (not recommended). “None” for open networks.

Download the generated PNG at 1000×1000 pixels or larger for clean printing results.

Method 4: Router Admin Panel

Many modern routers — including models from TP-Link, ASUS, Netgear, and Eero — display a QR code directly in their web interface or companion app. Log in to your router admin panel (typically 192.168.1.1 or 192.168.0.1), navigate to the wireless or guest network settings, and look for a “Share” or “QR Code” button. This is the most reliable method because the router generates the code from its own stored credentials, eliminating any chance of a typo.

Understanding the WiFi QR Code Format

WiFi QR codes encode a simple text string in the WIFI: format, which is based on the MeCard specification. The string looks like this:

WIFI:T:WPA;S:MyGuestNetwork;P:MyPassword123;H:false;;

The fields are:

• T: Authentication type — WPA, WPA2, WPA3, WEP, or nopass.
• S: SSID (network name). If it contains semicolons, commas, or backslashes, they must be escaped with a backslash.
• P: Password. Same escaping rules apply.
• H: Set to true if the network is hidden (not broadcasting its SSID). Omit or use false for normal networks.

The string is terminated with two semicolons (;;). If you ever need to generate a code manually — say, to test a specific character — you can paste this string into any standard QR encoder.

Printing Tips for a Perfect Guest Card

Size and scan distance

Follow the 10:1 rule: for every 10 inches of scanning distance, the QR code needs to be at least 1 inch across. A code printed at 2×2 inches works well for a tabletop card scanned from about 12–20 inches. Going below 1 inch makes scanning difficult in dim light.

Contrast and color

Dark-on-light prints scan more reliably than light-on-dark. A black code on white paper is ideal. Avoid placing the code over a busy background image.

Laminate it

A laminated A6 or 4×6 card is durable, easy to wipe down, and looks professional. Print the network name in large text below the QR code so guests know which network they’re joining.

Security Reminders

A printed QR code is visible to everyone in the room — and potentially to anyone who photographs it. Keep these points in mind:

• Share your guest network password via QR code, not your primary network credentials.
• Change the guest network password periodically (quarterly is reasonable for most households) and reprint the card.
• Enable client isolation on the guest network if your router supports it. This prevents guest devices from communicating with each other or with your primary devices.
• Set a guest network bandwidth limit if your router supports it, so guests can’t saturate your connection. Run a speed test to gauge your available headroom.

With a guest network correctly configured and a printed QR code on the counter, visitors connect in seconds — and your main network, NAS, and smart home devices stay completely separate. For more on keeping your home network secure and fast, see our guide on WPA2 vs WPA3 WiFi security.