QR Code Generator.

Yes, but it is generous enough that you will almost never hit it in practice. A QR code can hold up to roughly 4,200 alphanumeric characters or about 2,900 binary bytes at its largest version, which is far more than any normal URL, wifi credential, phone number or short message needs. The one caveat worth knowing is that the more data you pack in, the denser the QR becomes, with more tiny squares, which makes it harder to scan when printed small or from a distance, so keeping the encoded text short actually produces a cleaner, more reliable code. This tool encodes text fields only, so something like a vCard with an embedded photo, which can run to tens of thousands of bytes, would not fit, the photo would blow past the limit. For contact QRs we keep to text fields like name, phone and email, which stay comfortably within bounds and scan crisply even on a small printed sticker.

No, the QR code itself never expires, because it is simply a printed image, a fixed pattern of squares that encodes whatever you put into it. It will scan correctly for as many years as the ink survives. What can stop working is the destination behind it: if your QR points at a URL and you later take that page down or change its address, the still-valid QR will lead scanners to a dead link, and a wifi QR breaks the day you change the password. The way to future-proof a printed QR is to point it at something you control and can update without reprinting. For URLs, encode a short link from a service like Bitly, or better, a redirector on your own domain such as go.yourshop.in, so you can change where it lands later while the printed code stays the same. That way one sticker on your shop window can outlast several campaigns.

Not in this tool, which keeps things deliberately simple and reliable, but here is the trade-off behind that choice. Placing a logo in the centre of a QR covers up some of its data squares, so a logo-embedded QR has to use a higher error-correction level, typically level H instead of the standard M, which builds in enough redundancy that the code still scans despite the obscured middle. The cost is that level H makes the QR noticeably denser and busier, which can hurt scannability when printed small or in poor light. We may add logo embedding as an advanced option later for businesses that want the branded look. For now, the cleanest reliable approach is to print your logo separately, just above or beside the QR, with a short caption like "Scan to order", so you get the brand presence without compromising how dependably the code scans for your customers.

No, nothing you type is sent anywhere; the entire QR is generated on your own device. The whole tool runs client-side in your browser, so the URLs you encode, the wifi network names and passwords, and any contact details you enter never travel to us or to any third party, which matters a great deal for wifi QRs, since you are encoding a real password you would not want leaking. The only thing that touches the network is a one-time request to load the small QR-generation library from a CDN, and that request carries none of your data, it just fetches the code that does the drawing. Once that library is loaded, everything happens locally and the resulting QR is rendered right in the page for you to download. This privacy-first design means you can confidently generate QR codes for sensitive things like your home or office wifi without worrying that the credentials are being recorded on someone else server.

The difference is what happens the instant a phone scans the code. A URL QR opens the link directly, so the moment the camera recognises it, the phone offers to jump straight to that web page in one tap, which is what you want for menus, websites, Google review links, payment pages or anything where you need the customer to go somewhere immediately. A text QR instead just displays the encoded text on screen in the camera app and lets the person decide what to do with it, copy it, search it, or ignore it, without navigating anywhere. Use text type for things meant to be read rather than visited, such as an offer code a customer types at checkout, a coupon word, a short message, a Wi-Fi password written out, or a serial number. As a simple rule: if you want a one-tap journey to a destination, choose URL; if you want to hand someone a piece of information to use however they like, choose text.

The reliable rule of thumb is that the printed QR should be at least one tenth the size of the distance from which people will scan it. So for a code meant to be scanned from the hand at around 30 cm, such as on a menu, a visiting card or a product label, print it at roughly 3 cm across. For a code on a wall or a counter that people scan from about a metre away, print it at around 10 cm. For a large poster or a billboard meant to be scanned from 10 metres, the code needs to be about 1 metre wide to scan dependably. Going smaller than the rule suggests is the most common reason QR codes fail to scan in the real world. Also keep a clear quiet zone, a margin of blank space, around the code, and ensure strong contrast between the dark pattern and a light background, so phone cameras lock onto it quickly even in imperfect lighting.

The wifi QR follows a fixed, standardised text format because that is the only way phones know to treat it as network credentials rather than plain text. The format looks like WIFI:T:WPA;S:NetworkName;P:Password;; where T is the security type, S is the network name and P is the password, and both iOS and Android recognise this exact pattern. When a phone scans a code containing it, instead of just showing the text it offers a one-tap "Join this network" prompt, which is why it feels almost magical to guests. This tool builds that string for you automatically the moment you choose the Wifi type and fill in the fields, so you do not have to remember the syntax or worry about getting a semicolon wrong. It is a small but genuinely useful thing to print and laminate for a cafe, a salon, a clinic waiting room or a guest house, since customers join your wifi instantly without you reading out a long password across the counter.

Yes, and for that you should use our dedicated UPI QR Code Generator rather than the generic text or URL types here, because a UPI payment QR has to follow a specific structure to work. The UPI generator builds the code to the NPCI UPI deep-link specification, the upi://pay format that encodes your VPA, your payee name and optionally a fixed amount and a transaction note, so that scanning it opens the customer payment app pre-filled and ready to pay. That format is recognised by every major UPI app, including PhonePe, Google Pay, Paytm and BHIM, which a plain text QR of your UPI ID would not reliably trigger. So use this general QR tool for menus, websites, wifi, contact details and offer codes, and switch to the UPI QR Code Generator the moment you want customers to pay you, where you can also choose between an open amount for everyday billing and a fixed amount for set-price items.