Free Tool

Free WiFi QR Code Generator

Generate a free WiFi QR code in seconds. Guests scan with their camera and connect instantly, no password typing. Supports WPA, WPA2, WPA3, WEP, and open networks.

Network name (SSID)

The exact name your router broadcasts. Up to 32 characters.

Encryption

Most common - works for almost every modern network

Password

Up to 63 characters. Stays in your browser - never sent to U2L.

Hidden network (SSID not broadcast)

Live preview

Enter your network name to generate the QR code

No signup required

Free forever

GDPR compliant

Quick Answer

A WiFi QR code is a scannable image that stores network credentials (SSID, password, encryption type) in a standardized format. When scanned with a phone camera, the device joins the network automatically without manual password entry. Free, browser-based, downloadable as PNG, SVG, or PDF.

Quick Facts

iOS 11+ and Android 9+ scan WiFi QR codes natively from the default camera app - no third-party scanner needed.
WiFi QR codes use the WIFI: URI scheme, an unofficial but universally supported format originally documented by the ZXing project.
One code works for unlimited devices and unlimited scans. There is no expiration unless you change the password.
Encryption type is encoded into the QR data. WPA, WPA2, WPA3, WEP, and 'nopass' (open network) are all supported.
Hidden networks need an extra flag (H:true) so the device knows to broadcast the join request.
Reed-Solomon error correction lets a code survive up to 30% physical damage at level H and still scan correctly.
Adding a center logo is safe at error correction level H, which reserves enough redundancy for the obscured area.

How to create a WiFi QR code

Five quick steps. The QR updates live as you type - download when it looks right.

1
Enter your network name (SSID)
Type the exact name your router broadcasts. Capitalization matters. If your network shows special characters, type them as they appear; the tool escapes them automatically.
2
Choose encryption type
Pick WPA/WPA2 if you set a password (the default for almost every modern router). Pick WPA3 only if your router and all client devices support it. Pick WEP for legacy networks. Pick 'No password' for open networks - and don't print it publicly without thinking through the security trade-off.
3
Enter the password
Type the network password exactly as a guest would. Spaces, capitalization, and special characters all matter. The tool runs entirely in your browser - the password never leaves your device.
4
Toggle hidden network if needed
If your router has SSID broadcasting disabled, enable the 'Hidden network' option. Without this flag, phones won't try to join networks they can't see, and the QR scan will silently fail.
5
Download the QR code
Pick PNG for screens, SVG for print (vector, infinite resolution), or PDF for documents. Print at 2cm or larger so phone cameras can lock on at typical scanning distance.

What is a WiFi QR Code Generator?

WiFi QR Code Generator is a scannable two-dimensional barcode that stores Wi-Fi network credentials in a structured format. When a smartphone camera reads the code, the device parses the network name, security type, and password, then prompts the user to join the network with a single tap. No app, signup, or typing required.

The format originated with the ZXing (Zebra Crossing) open-source barcode library, which proposed a simple URI scheme - WIFI:T:<type>;S:<ssid>;P:<password>;H:<hidden>;; - that any QR scanner could parse. Apple, Google, Samsung, and every major Android OEM later wired native support directly into their camera apps, which is why a 2018-era smartphone can join a network from a printed code without installing anything.

WiFi QR codes solved a real problem: typing a 16-character password on a phone keyboard, especially with a mix of cases and symbols, takes 30+ seconds and frequently fails. A QR code reduces that to a single scan, which is why coffee shops, hotels, restaurants, and conference venues have adopted them at scale. The codes are also stateless: the same printed code joins one device or a thousand, and there is no rate limit because nothing on the U2L side or the router side tracks scans.

Because the QR contains the password in plain text, treat the printed code with the same care as a sticky note that says 'WiFi: PasswordHere.' Anyone who photographs your QR has your network credentials. For high-traffic public spaces, the right pattern is a separate guest network with a non-sensitive password, not your home or office network.

How does a WiFi QR Code Generator work?

A QR code is a 2D matrix barcode made of light and dark squares (modules) arranged in a grid. The grid encodes binary data using the Reed-Solomon error-correcting code, which lets a scanner reconstruct the original bytes even if part of the code is dirty, scratched, or partly covered. Four error correction levels exist: L (about 7% damage tolerance), M (15%), Q (25%), and H (30%). Higher correction reduces the data capacity of the code but improves real-world reliability.

For WiFi specifically, the QR encodes a short string in the WIFI: URI format. The exact encoding is: WIFI:T:<authentication>;S:<ssid>;P:<password>;H:<hidden_flag>;; where T is the encryption type (WPA, WEP, nopass), S is the network name (SSID), P is the password (omitted for open networks), and H is 'true' for hidden networks. Special characters that conflict with the format - colons, semicolons, commas, double quotes, and backslashes - are escaped with a leading backslash. So a password containing a semicolon becomes 'pass\;word' inside the QR data.

When the camera app on a phone identifies the QR pattern, it decodes the bytes, sees the WIFI: prefix, and recognizes it as a network credential. The OS then displays a system prompt - 'Join Network: SSID' - and adds the network to the device's saved networks if the user accepts. From the user's perspective, this is one scan and one tap. Behind the scenes, the OS is running the same join flow as if the user had typed the password manually, just with the friction removed.

The encryption type is not just metadata. The OS uses it to decide which authentication handshake to attempt. A QR generated with type WPA but pointed at a WPA2-only router still works because Apple and Google treat WPA and WPA2 as a unified authentication path. WPA3 requires explicit selection because it uses a different handshake (SAE instead of PSK). WEP is supported but discouraged - the encryption is broken and the OS may show a security warning.

Use Cases

How marketers, businesses, and developers use wifi qr code generator.

Coffee shops and cafes

Print one A5 card next to the register with your guest network QR. Customers scan, join, and stay longer. Avoids the 'what's the password?' question that interrupts service ten times an hour. Use a separate guest network so you can rotate that password without bothering staff.

Restaurants and bars

Add a small QR sticker on each table or on the back of the menu. Diners join silently while waiting for food. Pair with a Google Review QR on the same card to bundle two high-conversion CTAs into one piece of printed real estate.

Hotels and short-term rentals

Replace the laminated WiFi card with a QR. Saves staff from explaining the password fifty times a day. Print one for the room and one for the lobby. Airbnb hosts can include a QR in the welcome book - guests connect before they unpack.

Conference venues and events

A QR on the lanyard or printed program lets attendees onboard the event WiFi in seconds. Critical for hybrid events where speakers stream live or attendees use companion apps. Faster than the 200-person manual onboarding queue.

Coworking and offices

Stick a QR on the meeting room door for visitors who need fast access without bothering the front desk. Use it on the printer station so contractors can join without IT involvement. Pair with a separate guest VLAN for security isolation.

Schools and universities

Print on classroom whiteboards or library entrance doors. Reduces the IT helpdesk load during back-to-school week. For 1:1 device deployments, the QR cuts the join step from 60 seconds to 3 per student, which adds up across a 30-student class.

Healthcare clinics

Patient WiFi in the waiting room boosts experience scores. Display a QR at reception so people can join while waiting. Keeps staff from repeating the password across a busy afternoon and avoids whiteboard tampering.

Retail and pop-up stores

Customer WiFi keeps shoppers in-store longer and unlocks beacon analytics. A QR sticker on the dressing room door or on shelf-edge labels invites the join without staff prompting. Especially useful for stores in basements or dead-zone malls.

Vacation rentals and B&Bs

Print the QR inside the welcome book and laminate it. Guests join the moment they walk in, before luggage is even unpacked. Reduces the most common host-text-message question by 80% and frees you from being on call every check-in.

Home guest network

Stick a small QR card by the front door. Visiting family connects without you typing your 24-character random password into a relative's phone. Use a separate guest SSID with isolation so devices on the guest network can't reach your printer, NAS, or smart home hub.

WiFi QR Code Generator vs Alternatives

Side-by-side feature and pricing comparison with the top alternatives.

Feature	U2L	Bitly	Dub.co	QR Code Monkey	GoQR.me
WiFi QR code support
Free, no signup
WPA3 encryption type
Vector SVG download				Paid
PDF download
Hidden network support
Custom logo / branding	Free tier	Paid only	Paid only
Bulk WiFi QR (CSV)	Paid
Password stays in browser				Unclear	Unclear

WiFi QR Code Generator vs QR Code Monkey

QR Code Monkey is the most-trafficked free WiFi QR generator. It works, but the free tier hides important features behind a paywall and SVG export specifically requires the paid plan, which means most users walk away with a low-resolution PNG that prints poorly at A4 size.

U2L's WiFi QR generator is free, ships SVG and PDF in the same export menu, and supports WPA3 (which Monkey does not). Both keep the password in the browser; only U2L states this explicitly in the tool. For one-off home or small-business use, either works. For anything you want to print at scale, prefer the vector output.

WiFi QR Code Generator vs GoQR.me

GoQR.me is the simplest WiFi QR generator on the web - a single form on a single page. It hits the basics but stops there. No SVG export, no logo support, no hidden network flag exposed in the UI, and the design has not been updated in close to a decade.

If you want a working QR in 10 seconds and don't care how it looks, GoQR is fine. U2L gives you the same 10-second flow plus vector export, WPA3, hidden network, and a path to dynamic QR codes if you ever need to rotate the password without reprinting.

Best Practices

Use a guest network

Never print a QR for your primary WLAN if anyone else might see the code. Routers from any major vendor support a guest network with isolation and a separate password - that's what should be on the QR.

Print at 2cm minimum

At typical scanning distances (30cm), a code smaller than 2x2cm becomes hard for camera autofocus to lock onto. For wall-mounted codes meant to be scanned from across a room, scale up to 8cm or larger.

Use error correction level H if you add a logo

Logo overlays cover part of the code's data. Level H reserves 30% redundancy, enough that a centered logo at 20% of code area still scans cleanly. Levels L and M will fail intermittently.

Test on multiple phones before printing

Scan with iPhone, recent Android, and one older Android (10+) before sending the QR to print. Differences in camera autofocus and OS-level handling occasionally surface scanning failures that look fine in the preview.

Use high contrast

Black on white prints best. Colored QRs work but lose reliability under tinted lighting (warm restaurant lighting, fluorescent office lighting). If you must use a brand color, keep the dark modules at least 65% darker than the background.

Avoid glossy lamination on the QR area

Glossy lamination creates glare that defeats camera autofocus. If the rest of the card is laminated, mask the QR area with a matte finish. Matte UV lamination is widely available and costs the same.

Include a fallback text password nearby

If the camera app fails or the user has an older device, give them an out. A small line below the QR with 'WiFi: NetworkName / Password: yourpassword' covers every edge case at zero cost.

Generate at vector resolution for print

Always download SVG when the destination is print. PNG at 1024x1024 looks fine on screen but pixelates if blown up to A3 poster size. SVG scales to any size without losing a single pixel.

Re-generate when you rotate the password

Static QR codes encode the password literally. Change the password and the printed code becomes useless. Either commit to a static password (with a guest network), or use a dynamic QR service so you can rotate without reprinting.

Common Mistakes to Avoid

Selecting the wrong encryption type

If your router uses WPA2 but the QR is generated as WEP, the join will silently fail or downgrade to a less secure handshake. Confirm the type in your router's admin page before generating; 'WPA/WPA2 Personal' is the most common modern setting.

Forgetting to escape special characters

Passwords containing semicolons, colons, commas, backslashes, or double quotes break the WIFI: URI parser unless escaped. The U2L tool escapes them automatically; manual encoders frequently get this wrong and produce QRs that scan but fail to authenticate.

Printing too small

QRs printed below 2cm at standard 30cm scan distance fail intermittently on lower-end Android cameras. Bump to 4cm and the failure rate drops to near zero.

Forgetting the hidden network flag

Hidden networks (SSID broadcast disabled) require H:true in the QR data. Without it, phones won't actively probe for the network and the scan succeeds but the join silently times out.

Treating the QR as private

Anyone who photographs the QR has your password. Treat it like a written sign, not like a key. For sensitive networks, never put the QR on signage; only share it directly with the people who should join.

Using bitmap (PNG) for poster-size print

PNG at 512px is fine for an A5 card and looks atrocious on an A2 poster. Always export SVG or PDF when the print size is uncertain or large.

Setting the SSID with leading or trailing spaces

Some routers allow trailing spaces in the SSID; phones treat them as a different network. If the QR doesn't connect, copy the SSID directly from your router config rather than retyping it.

Technical Specifications

Format	WIFI: URI scheme (de facto standard, originally documented by ZXing)
Encoded fields	T (auth type), S (SSID), P (password), H (hidden flag)
Auth types supported	WPA, WPA2, WPA3, WEP, nopass (open network)
Special-character escape	Backslash precedes \, ;, ,, :, and "
QR error correction levels	L (~7% damage), M (~15%), Q (~25%), H (~30%)
Default capacity headroom	Sufficient for SSID + 63-char password at level M, with logo support at H
iOS native support	iOS 11+ (2017) via the default Camera app
Android native support	Android 9+ (2018) via the default Camera app on most OEMs
Recommended print size	2 cm minimum at 30 cm scan distance; scale up for further distances
Available downloads	PNG (raster), SVG (vector, scales to any size), PDF

Industry-Specific Use Cases

Hospitality (hotels, B&Bs, vacation rentals)

Print one QR per room and one for common areas. Replaces the laminated WiFi card and reduces front-desk interruptions by 60-80% in the first month. Particularly effective for international guests who don't want to type a 20-character password on a foreign keyboard layout.

Food service (restaurants, cafes, bars)

Pair the WiFi QR with a Google Review QR on the same card. Diners scan both within five seconds of sitting down. Tested patterns: small QR sticker on the back of every menu, tabletop QR card with both QRs side-by-side, and a vinyl decal on the side of the till.

Office spaces (coworking, corporate visitors)

Stick the guest-network QR on every meeting room door. Visitors join before the host arrives. Pair with a guest VLAN that isolates them from the corporate LAN. For coworking, place the QR at the welcome desk and inside member-only restrooms (high attention, low foot traffic).

Education (schools, libraries, universities)

Display a QR in every classroom and at library entrances. During the first week of term, this single change cuts IT support tickets for student device onboarding by 40-60%. Use the school's eduroam-style guest network rather than the staff LAN.

Healthcare (clinics, dental, hospitals)

Patient WiFi is a measurable component of patient experience scores in NHS, CMS, and HCAHPS surveys. A waiting-room QR card joins patients in seconds without staff involvement. Keep the patient WiFi on a separate VLAN from clinical systems for HIPAA / GDPR compliance.

Retail (stores, pop-ups, malls)

Customer WiFi increases dwell time and unlocks Bluetooth beacon analytics. The QR works best on dressing room doors and shelf-edge talkers - high-attention surfaces where customers pause for 5-10 seconds anyway. Avoid placing on busy storefront windows; sun glare kills scans.

Frequently Asked Questions

Can I scan a WiFi QR code with my iPhone?

Yes. iPhones running iOS 11 or later (anything from 2017 onwards) scan WiFi QR codes natively from the default Camera app. Point the camera, wait for the yellow notification banner, and tap to join. You don't need any third-party app or to download a scanner.

Can I scan a WiFi QR code with my Android phone?

Yes. Most Android phones running Android 9 (Pie) or later support WiFi QR scanning natively from the camera. Samsung, Pixel, OnePlus, Xiaomi, and Oppo devices have all shipped this feature for years. On older devices, install the Google Lens or Google Camera app for the same behavior.

What's the difference between WPA, WPA2, and WPA3?

WPA, WPA2, and WPA3 are successive generations of WiFi encryption. WPA2 is the most common today and what 'password-protected WiFi' usually means. WPA3 is newer (2018+), more secure, and supported by routers and devices made in 2019 or later. For QR generation, WPA and WPA2 are interchangeable; WPA3 needs to be selected explicitly.

Does this work for hidden networks?

Yes. Toggle the 'Hidden network' option when generating. Hidden networks don't broadcast their SSID, so phones need an explicit hint to attempt the join. The H:true flag in the QR data tells the OS to try anyway. Without this flag, the scan succeeds but the join silently fails.

Is my password stored anywhere?

No. The U2L WiFi QR generator runs entirely in your browser. The SSID and password are encoded into the QR locally and never sent to U2L servers, logged, or stored anywhere. You can verify by opening browser dev tools and checking the Network tab while generating.

What size should I print the QR code?

Minimum 2cm by 2cm if it's meant to be scanned at arm's length (about 30cm away). Scale up linearly for longer distances: 4cm for 60cm, 8cm for 120cm, and so on. Posters meant to be scanned from across a room should be 15cm or larger.

Can I add my logo to the QR code?

Custom logos are supported in the U2L QR Code Generator (the dynamic tool). The free WiFi QR tool keeps the design minimal for maximum compatibility. If you need a logo overlay, generate the WiFi QR here, then add the logo with any image editor at error correction level H, which has 30% damage tolerance.

What's the maximum WiFi password length?

WPA2 allows passwords up to 63 ASCII characters. The QR can encode this comfortably at standard error correction levels. SSIDs can be up to 32 characters. Beyond those limits, the QR generator will warn you and the resulting code may not scan reliably at small print sizes.

Why does my QR code not work on older phones?

iOS 10 and Android 8 do not support native WiFi QR scanning. On those devices, the user has to install a third-party scanner app (any QR reader from the App Store works). Always include a fallback text version of the password near the printed QR for older devices.

Can I print this on a t-shirt or merchandise?

Yes, but stress-test first. Fabric weave can soften the edges of the QR's modules and reduce scan reliability. Use error correction level H, print at 8cm or larger, and pre-test the printed shirt with a few phones before doing a full run. Direct-to-garment printing works better than transfer paper.

How do I share with iPhone if my Android can't scan it?

iPhones running iOS 11+ have a 'Share Password' feature in Settings > Wi-Fi that prompts a nearby paired iPhone to receive the password automatically. For sharing across iOS and Android, the WiFi QR code is the standard universal solution.

Does this work for both 5GHz and 2.4GHz networks?

Yes. The QR doesn't encode the band - it encodes the SSID and password. If your router broadcasts a single SSID across both bands (band steering), the phone joins whichever band it picks. If you have separate SSIDs (e.g., 'Network' and 'Network-5G'), generate a separate QR for each.

What if my password contains special characters?

The tool handles them. Backslashes, semicolons, colons, commas, and double quotes are escaped automatically per the WIFI: URI spec. You can paste a complex password with any character set and the resulting QR will still parse correctly on iOS and Android.

Can I update the password without printing a new QR?

Not with a static QR code - the password is baked into the QR data. To rotate the password without reprinting, use a dynamic QR code (U2L's QR Code Generator). The dynamic version stores the current password server-side and lets you update it from a dashboard at any time.

Does this work for WPA3 enterprise networks?

WPA3 personal (the kind used in homes and small offices) is supported. WPA3 enterprise (the variant used in corporate networks with RADIUS authentication) is not - it requires per-user credentials and certificates that can't be encoded in a QR. Enterprise networks should use a network onboarding profile instead (PEAP / EAP-TLS).

Will this work for captive portal networks?

Partially. The QR can join the network's underlying WiFi, but the captive portal still requires the user to accept terms or enter a code in a browser. Many venues now use 'Passpoint' (Hotspot 2.0) profiles for seamless join, which is a separate technology from WiFi QR codes.

What error correction level should I use?

Level M (medium, 15% redundancy) is the default and works for most printed codes. Use level H (30% redundancy) when adding a logo or when the print surface might get scuffed (high-traffic floor signage). Use level L only if you're tight on capacity at very large password sizes.

PNG or SVG, which should I download?

SVG for print, PNG for screens. SVG is vector and scales to any size without losing quality, which matters when you're not sure how large the final print will be. PNG is fine for digital displays, social posts, and screen-only use cases. PDF wraps the SVG with print metadata for professional printers.

Can I generate WiFi QR codes in bulk?

The free tool generates one at a time. For bulk generation (multi-tenant landlord, hotel chain, conference venue with 50 rooms), use the U2L API or the Bulk WiFi QR tool (paid). Both accept a CSV with SSID/password/encryption columns and return a ZIP of QR codes.

Is there a copyright on QR codes?

No. QR Code is a trademark of DENSO WAVE, but the format is openly licensed and free to use commercially. You own any QR code you generate. The WIFI: URI scheme is a community-developed convention, not a proprietary standard.

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Key Terms

SSID: Service Set Identifier - the human-readable name your router broadcasts (e.g., 'CafeWiFi-Guest'). Up to 32 characters. Case-sensitive. The first field in a WiFi QR's encoded data.
WPA / WPA2 / WPA3: WiFi Protected Access, generations 1 through 3. WPA2 (2004) is the modern baseline; WPA3 (2018) is its more secure successor. WPA1 is deprecated. The QR encodes which generation to use; phones automatically negotiate the matching handshake.
WEP: Wired Equivalent Privacy. The original WiFi encryption from 1997, broken since 2001. Many older legacy networks still use WEP and the QR format supports it for compatibility, but any data sent over a WEP link should be considered public.
Hidden network: A WiFi network configured to not broadcast its SSID. Devices don't see it in the network list and must be told explicitly to look for it. The H:true flag in the QR enables this behavior.
Captive portal: A web page that intercepts the first HTTP request after a device joins a network and forces the user to accept terms or sign in. Common in hotels and cafes. WiFi QR codes can join the underlying network but cannot bypass the portal.
Error correction level (ECL): How much redundancy a QR code reserves for damage tolerance. Levels L (7%), M (15%), Q (25%), and H (30%). Higher levels reserve more redundancy and reduce data capacity. Level H is required for QRs with logo overlays.
Reed-Solomon: The error-correcting code used by every QR code. Mathematically guarantees that a code can be reconstructed even if a percentage of modules are damaged or obscured. Underpins the ECL system above.

Need a QR code that updates without reprinting?

U2L's dynamic QR codes let you change the destination, swap the WiFi password, or update the URL without throwing away your printed materials. Free for the first dynamic code; upgrade for unlimited.

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