Is the password in the QR code encrypted?

No. A Wi-Fi QR code stores the network name, security type and password as plain text. Anyone who scans it, or photographs the sign and scans the photo, can read the password. Printing it on a guest network keeps that from mattering.

Do you see or store my network details?

No. Everything is made in your browser, and the site's security policy only allows the page to talk to this site, which has no server code at all. Nothing you type is uploaded, logged or put in a link. The privacy page explains how to check this yourself.

What does “Remember on this device” do?

It saves your details in this browser's local storage so they're filled in next time. It's off by default, it never leaves the device, and “Clear details and forget them” removes it. Don't turn it on for a shared computer.

Do you track how many times my code is scanned?

No, and we can't. The code joins the network directly; scanning it never contacts this site or anyone else.

Does the code expire?

No. There's no server behind it. It works until the network name, password or security type changes on the router.

What happens if I change my Wi-Fi password?

Every printed code stops working, because the old password is inside it. Make and print a new sign. Services that offer editable Wi-Fi codes send people to a web page instead, which can't help a guest who isn't online yet.

Can I make a code for a hidden network?

Yes: tick “Hidden network”. The code then includes H:true and the sign says the network is hidden. Phones handle hidden networks less consistently, so test with the phones your guests use.

Does it work with WPA3?

Yes. For most networks, including mixed WPA2/WPA3, choose “WPA2 / WPA3 Personal”. Choose “WPA3 Personal only” if your router accepts WPA3 alone; that adds a flag some phones use and others ignore. Older phones can't join WPA3-only networks at all. Details are in the format guide.

Can it handle special characters and emoji?

The code can hold any character, and we escape the ones the format reserves. The printed lettering covers Latin-based languages; if your network name uses characters it can't draw, the sign tells you, and the code still contains them exactly.

Will it work for a work or school network with personal logins?

No. Networks where each person signs in with their own account (Enterprise, 802.1X) can't be joined from a printed code with a phone's camera.

How do I print at the right size?

Open the PDF and print at 100% or “Actual size”. “Fit to page” shrinks it, so a 4×6 in card stops fitting its frame. Cut on the crop marks.

Which sizes can I download?

4×6 in and 5×7 in cards, full-page US Letter and A4 signs, 3.5×2 in business cards ten to a sheet, and folding table tents two to a sheet. Cards and tents print on Letter or A4 paper with cut marks, and cards also come as a print-shop PDF with 0.125 in bleed.

What paper should I use?

Ordinary paper works for anything that goes in a frame. Use card stock (about 200–250 gsm, or 65–80 lb cover) for table tents and business cards. Matte finishes scan better than glossy under bright lights.

Can I use the designs for my business?

Yes. The signs you make are yours to print and use, commercially or not, with no attribution required.

How do I know the code works before printing a stack?

The page decodes your finished sign and confirms it matches what you typed. That checks the code, not your router, so print one copy and scan the paper with a phone that hasn't joined the network before.

Wi-Fi QR code questions, answered

What's inside a Wi-Fi code, what happens when the password changes, and how to print a sign that fits its frame.

Privacy and security

Is the password in the QR code encrypted?: No. A Wi-Fi QR code stores the network name, security type and password as plain text. Anyone who scans it, or photographs the sign and scans the photo, can read the password. Printing it on a guest network keeps that from mattering.
Do you see or store my network details?: No. Everything is made in your browser, and the site's security policy only allows the page to talk to this site, which has no server code at all. Nothing you type is uploaded, logged or put in a link. The privacy page explains how to check this yourself.
What does “Remember on this device” do?: It saves your details in this browser's local storage so they're filled in next time. It's off by default, it never leaves the device, and “Clear details and forget them” removes it. Don't turn it on for a shared computer.
Do you track how many times my code is scanned?: No, and we can't. The code joins the network directly; scanning it never contacts this site or anyone else.

How the codes work

Does the code expire?: No. There's no server behind it. It works until the network name, password or security type changes on the router.
What happens if I change my Wi-Fi password?: Every printed code stops working, because the old password is inside it. Make and print a new sign. Services that offer editable Wi-Fi codes send people to a web page instead, which can't help a guest who isn't online yet.
Can I make a code for a hidden network?: Yes: tick “Hidden network”. The code then includes H:true and the sign says the network is hidden. Phones handle hidden networks less consistently, so test with the phones your guests use.
Does it work with WPA3?: Yes. For most networks, including mixed WPA2/WPA3, choose “WPA2 / WPA3 Personal”. Choose “WPA3 Personal only” if your router accepts WPA3 alone; that adds a flag some phones use and others ignore. Older phones can't join WPA3-only networks at all. Details are in the format guide.
Can it handle special characters and emoji?: The code can hold any character, and we escape the ones the format reserves. The printed lettering covers Latin-based languages; if your network name uses characters it can't draw, the sign tells you, and the code still contains them exactly.
Will it work for a work or school network with personal logins?: No. Networks where each person signs in with their own account (Enterprise, 802.1X) can't be joined from a printed code with a phone's camera.

Printing

How do I print at the right size?: Open the PDF and print at 100% or “Actual size”. “Fit to page” shrinks it, so a 4×6 in card stops fitting its frame. Cut on the crop marks.
Which sizes can I download?: 4×6 in and 5×7 in cards, full-page US Letter and A4 signs, 3.5×2 in business cards ten to a sheet, and folding table tents two to a sheet. Cards and tents print on Letter or A4 paper with cut marks, and cards also come as a print-shop PDF with 0.125 in bleed.
What paper should I use?: Ordinary paper works for anything that goes in a frame. Use card stock (about 200–250 gsm, or 65–80 lb cover) for table tents and business cards. Matte finishes scan better than glossy under bright lights.
Can I use the designs for my business?: Yes. The signs you make are yours to print and use, commercially or not, with no attribution required.
How do I know the code works before printing a stack?: The page decodes your finished sign and confirms it matches what you typed. That checks the code, not your router, so print one copy and scan the paper with a phone that hasn't joined the network before.

Still stuck? The troubleshooting guide covers codes that won't scan or join.