WiFi QR Code Generator

About WiFi QR Code Generator

How It Works

The tool builds a WIFI:T:...;S:...;P:...;H:...;; string and renders it as a QR image via the qrcode npm library running client-side. iOS 11+ and Android 10+ recognise the format in their stock Camera apps.

Step	Action
1. Enter network name (SSID)	Type your WiFi network name exactly as it appears on devices
2. Enter password	Type your WiFi password (leave blank for open networks)
3. Choose security type	Select WPA/WPA2/WPA3, WEP, or None
4. Hidden network (optional)	Toggle on if your SSID is not broadcast
5. Generate and download	The QR code renders instantly - download as PNG

Worked example: For SSID Cafe Guest, password coffee;time, WPA2, visible network, the encoded string is WIFI:T:WPA;S:Cafe Guest;P:coffee\;time;; - note the semicolon in the password is escaped with a backslash per the WPA3 spec. Spaces are allowed, but colons, semicolons, commas, backslashes, and double-quotes must be escaped.

Step	Action
1. Enter network name (SSID)	Type your WiFi network name exactly as it appears on devices
2. Enter password	Type your WiFi password (leave blank for open networks)
3. Choose security type	Select WPA/WPA2/WPA3, WEP, or None
4. Hidden network (optional)	Toggle on if your SSID is not broadcast
5. Generate and download	The QR code renders instantly - download as PNG

Supported Security Types

Type	Security Level	When to Use
WPA/WPA2/WPA3	Strong (AES encryption)	Default for nearly all home and office networks since ~2006
WEP	Weak (known vulnerabilities)	Only for very old devices that do not support WPA; upgrade if possible
None (open)	No encryption	Intentionally open networks like guest hotspots in public venues

How Many People Scan QR Codes Now?

QR code scanning is now mainstream: Juniper Research forecasts 2.2 billion active QR code users globally in 2025, and Uniqode's 2026 industry report finds 59% of smartphone users scan a QR code at least once per week. WiFi sharing is one of the top three personal use cases, behind only menu access and mobile payments. Scan friction has also collapsed - iOS 11 (2017) and Android 10 (2019) made WiFi scanning work from the stock camera app with a single tap.

Stat (2025/2026)	Value	Source
Global QR users	~2.2 billion (29% of smartphone users)	Juniper Research 2025
Weekly scan frequency	59% scan at least weekly	Uniqode 2026 report
QR payment volume	$3 trillion (2025), projected $8T by 2029	Juniper Research
US share of global scans	~42% of volume	Uniqode 2026 report
iOS native WiFi QR support	iOS 11 (Sep 2017)	Apple release notes
Android native support	Android 10 (Sep 2019)	Google release notes

Why Are Some WPA3 WiFi QR Codes Broken?

Plenty of online generators still output T:WPA2, but the WPA3 spec only recognises WPA (covering WPA1/2/3) or WEP. A value of WPA2 is non-standard and newer WPA3 clients may refuse it. This tool always writes T:WPA so the same QR works from WPA1 through WPA3 transition networks.

A second common break is incorrect escaping. The WPA3 URI ABNF requires \, ;, ,, :, and " inside an SSID or password to be backslash-escaped. Characters outside the printable ASCII set should be percent-encoded. Generators that skip this produce codes that some Android builds parse differently from iOS. The escapeWifiString helper in this tool handles all five reserved characters on both the SSID and password before building the string.

Supported Security Types

Type	Security Level	When to Use
WPA/WPA2/WPA3	Strong (AES encryption)	Default for nearly all home and office networks since ~2006
WEP	Weak (known vulnerabilities)	Only for very old devices that do not support WPA; upgrade if possible
None (open)	No encryption	Intentionally open networks like guest hotspots in public venues

Where to Place Your WiFi QR Code

Location	Format	Tips
Fridge or notice board	Printed on paper, attached with magnets or tape	Print at least 3x3 cm for reliable scanning
Near the router	Small printed card or sticker	Guests naturally look near the router when they need WiFi
Framed on the wall	Printed, framed with a label "Scan to connect"	Works well in living rooms and offices
Airbnb/rental welcome pack	Printed in a welcome booklet	Include the network name as text backup in case scanning fails
Cafe or restaurant table	Laminated table tent or wall sign	Include your business name and "Free WiFi" text
Conference room	Printed on the whiteboard or wall	Makes onboarding meeting attendees fast
Digital sharing	Share the PNG via WhatsApp, email, or Slack	Useful for remote teams who need office WiFi before they arrive

Which Devices Can Scan WiFi QR Codes?

Every mainstream phone sold in the last five years scans WiFi QR codes from the stock camera app. Desktop support is patchier: Windows and macOS cameras do not parse QR codes natively, so you would need a reader app or the phone as a bridge.

Device	How to Scan	Supported Since
iPhone / iPad	Open the Camera app and point at the QR code	iOS 11 (2017)
Android phones	Open the Camera app or Google Lens	Android 10+ natively; earlier versions with QR scanner apps
Windows 11 laptops	No native camera QR scanning; use Camera app with a QR extension or phone	N/A
macOS	No native camera QR scanning; type manually or use a QR reader app	N/A
Samsung Galaxy (One UI)	Quick settings tile "Scan QR code" or camera	One UI 2 (2020)

The WIFI URI Format

Behind the scenes, the QR code encodes a string in this format:

WIFI:T:WPA;S:MyNetwork;P:MyPassword;H:false;;

Parameter	Meaning	Values
T	Security type	WPA, WEP, or blank (open)
S	SSID (network name)	Your network name (special characters are escaped)
P	Password	Your network password (omitted for open networks)
H	Hidden network	true or false
R	Transition Disable (WPA3 only)	Hex bitmap to block downgrade attacks
K	Public key (WPA3 only)	Base64 public key for out-of-band provisioning

What Are the Security Considerations?

A printed WiFi QR is no more or less sensitive than the password it contains - anyone who can read or photograph the QR can join the network. The practical controls are physical placement and network segmentation.

Concern	Risk Level	Mitigation
QR code visible to visitors	Low - same as giving out the password verbally	Place in private areas; use a guest network for public spaces
Password stored in the QR image	Low - the password is in the QR data, not encrypted	Anyone who can scan it can read the password; this is by design
Using your main network for guests	Medium	Set up a separate guest network on your router for visitors
Password server leak	None here	The QR code is generated entirely in your browser; nothing is uploaded
Photo of the QR shared online	High	Anyone seeing the photo can join - rotate the password after any accidental share

Common Mistakes That Break WiFi QR Codes

• Wrong security type - selecting "None" when the network actually uses WPA2 means the phone prompts "connected" but cannot authenticate.
• Trailing spaces in the SSID - many routers expose an SSID like MyNetwork with an invisible trailing space. Copy it exactly or connecting will silently fail.
• Unescaped special characters - passwords containing ;, ,, :, ", or \ must be backslash-escaped. This tool does it automatically.
• Printing too small - below 2 cm per side, phone cameras struggle to resolve all modules. Aim for 3 cm minimum for a dense WPA2 password.
• Low contrast printing - coloured or faded QR codes fail. Stick with black on white for reliability.
• Hidden SSID without the H flag - if you tick "Hidden network" on the phone while scanning a QR without H:true, some Android builds refuse to connect.

Printing Your QR for Reliable Scans

Most scanning failures come from print size or contrast, not the QR data itself. ISO/IEC 18004 (the QR spec) recommends a "quiet zone" of at least 4 modules of whitespace around the code. For a typical WiFi string at error correction level M, 3 cm x 3 cm on 300 DPI paper gives 99%+ first-try scan rates on modern phones.

Print Size	Typical Scan Distance	Good For
2 cm x 2 cm	~15 cm	Business card (phone held close)
3 cm x 3 cm	~25 cm	Wallet card, table tent
5 cm x 5 cm	~50 cm	Welcome booklet, framed at desk
10 cm x 10 cm	~1 metre	Wall poster in cafe or reception
20 cm x 20 cm	~2 metres	Conference room, lecture hall

For general-purpose QR codes from any text or URL, use the QR code generator. Need a strong password for your network? Try the password generator - a 20-character random password is both secure and easy to share via QR code. If you also need to share device identifiers, the UUID generator covers that case.

Sources

• Wi-Fi Alliance - WPA3 Specification (WIFI URI ABNF)
• ZXing Project - WiFi Network Config Format
• ISO/IEC 18004:2024 - QR Code Specification
• Juniper Research - QR Code Payment Market Report
• Uniqode - QR Code Trends & Statistics Report
• Apple Support - Connect to Wi-Fi on iPhone
• Google - Share saved Wi-Fi networks on Android