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WiFi QR

An offline Wi-Fi QR code generator: nothing leaves your phone

WiFi QR builds the code on your iPhone or iPad with Core Image, so the network name and password are never sent to a website. Generating, showing, saving, scanning and the first export all work with no connection.

3 min read · Updated 2026-09-17

Download on the App Store

Most Wi-Fi QR generators are web pages. You type the password into a form and hope the page keeps it to itself. That's a risk worth avoiding. With airplane mode on, the Generate tab still draws a code, because it is just a plain text string turned into squares on the device.

What the code actually contains

The string is the standard Wi-Fi format: WIFI:T: plus the security, S: the name, P: the password, then ;;. Special characters get a backslash. For a home network called Casa Rossi with the password sole;mare:2024, the app builds this text:

WIFI:T:WPA;S:Casa Rossi;P:sole\;mare\:2024;;

That is 44 bytes. By the QR capacity tables it fits a 33 x 33 module code at the level the on-screen preview uses (M), and a 37 x 37 one at the level used for exports (H), which has more spare data for damage. You will never need to work that out. It's worth knowing because it shows how little there is: a small square, and no server in the picture.

Same network, different options
CaseText lengthModules at MModules at H
Casa Rossi, WPA, password sole;mare:202444 bytes33 x 3337 x 37
Same, with Hidden Network on (adds H:true;)51 bytes33 x 3341 x 41
Cafe Guest, Open (No Password)28 bytes29 x 2933 x 33

Doing it with no connection

  1. Open the Generate tab. Type the Network Name (SSID), pick the Security Type and type the Password. Hidden Network and Custom Title (Optional) sit under Advanced Options.
  2. The code appears above the form as soon as the data is valid. Until then it says that you need to enter the network details.
  3. Save to History keeps it on the device, and Share QR Code opens the iOS share sheet with a PNG, which AirDrop or Save to Files handle with no internet at all.
  4. For a sign on paper, open History, tap the network and tap Export QR Code (with Premium the buttons are Export with Template and Custom Export), then set Export As to PDF.

What still touches the internet

The free version of WiFi QR shows Google ads, so it goes online to load them, and it uses the App Store for purchases and restore. It also asks for tracking permission after the splash screen. Declining that permission doesn't affect the app's core features. None of that carries your networks or passwords; they live in the app's own storage on the device, with no iCloud and no account.

One thing worth noting: the app keeps network passwords as app data, not in the Keychain. The Premium Lock asks for Face ID or the passcode before a network opens, but that is a gate inside the app, not encryption. This may be fine for a home network, but less suitable for an office.

What to check before installing

  • The free plan saves 3 networks and allows one export in total, with a small watermark. After that an export needs a short ad (an internet connection) or Premium. Showing the code on screen has no limit.
  • No backup, no sync. Delete the app and the saved networks go too.
  • A printed code is static. It cannot be changed or switched off remotely; change the router password and make a new one.

Questions and answers

Can I make a Wi-Fi QR code without internet?
Yes. WiFi QR draws the code on the device, so Generate and showing it work in airplane mode. Sharing the PNG by AirDrop works too, for the one free export; later ones need a rewarded ad, which needs a connection, or Premium.
Is it safe to make a Wi-Fi QR code?
With an offline generator the password stays on your device. The code itself holds the password as text, so anyone who scans it can join; use a guest network for public places.
How do I create a QR code offline on an iPhone?
Install a generator that builds it locally, type the text, and share the image. In WiFi QR, the Generate tab does this for Wi-Fi.
Is sharing a Wi-Fi QR code safe?
As safe as sharing the password. Anyone who gets the image gets the access, so send it to people you would tell the password to.
Does scanning need internet too?
No. The scan happens on the device with the camera. Joining the network is done by iOS, which needs the network itself to answer, not the web.

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