Free QR Code Generator
Create scannable QR codes for links, WiFi, WhatsApp, vCards and more. Add your logo, match your brand colors, and download as PNG or SVG — free, private, no sign-up.
1. Content
Pick what your QR code should do, then fill in the details. The code updates live.
2. Design
Match the code to your brand. Everything updates instantly.
How to use this QR code generator
- Pick a content type. Choose Link, Text, Email, Phone, SMS, WhatsApp, WiFi, or Contact. Each type shows exactly the fields it needs — nothing more.
- Fill in the details. Type your URL, message, or contact info. The QR code redraws itself live on the right as you type, so you can see the pattern change in real time.
- Style it (optional). Change the code and background colors to match your brand, drag the size slider for print-ready resolution, and set error correction to Q or H if you plan to add a logo.
- Add your logo (optional). Upload any image and it is placed on a clean white badge in the center. Keep it small — it should never cover more than about a quarter of the code.
- Download and test. Grab the PNG for print or social media, or the SVG for infinitely sharp scaling. Then scan it with your own phone camera before publishing — it takes five seconds and saves embarrassment.
Tip for images: QR codes store text, not picture files. To share a photo, upload it anywhere (Google Drive, Imgur, your own site) and generate a Link code pointing at it.
What is a QR code generator?
A QR code generator turns text — a website link, a WiFi password, a phone number — into a square grid of black and white modules that any phone camera can read in a fraction of a second. QR stands for Quick Response, and Denso Wave invented the format in 1994 for tracking car parts. Today it is everywhere: restaurant menus, event tickets, payment apps, product packaging, and business cards.
A static QR code like the ones this QR code generator makes needs no account, no subscription, and no server. The data lives inside the pattern itself, so the code works forever and nobody can track who scans it.
The math inside: how a QR code is actually built
Under the pattern there is serious mathematics. First, your text is converted to bytes using UTF-8, then packed into a bit stream with a 4-bit mode indicator and a character count. The QR code generator picks the smallest of 40 QR versions (from a 21 by 21 grid up to 177 by 177) that fits your data at the chosen error-correction level.
Next comes the clever part: Reed-Solomon error correction. Your data is split into blocks, and each block gets extra parity codewords computed with polynomial division in the Galois field GF(256) — the same finite-field arithmetic used in CDs, DVDs, and deep-space communication. These parity bytes are interleaved across the code, so a smudge or a logo in the middle only damages a little of each block instead of a lot of one block. At the highest level, as a result, 30 percent of the modules can be destroyed and the message still reconstructs perfectly.
Finally, the bits are woven into the grid in a vertical zigzag that skips over the three finder squares, the timing lines, and the alignment patterns. One of eight mask patterns is XORed over the data area to break up large solid areas that confuse scanners. The best mask is then chosen by a four-rule penalty score, and 15 format bits plus (for large codes) 18 version bits are stamped on, so the scanner knows the version, the mask, and the error level before it reads a single data bit. This page does every one of those steps in JavaScript, right in your browser, with zero network requests.
Why QR codes matter
QR codes remove typing — the single biggest source of friction and errors between the physical world and the digital one. For example, a WiFi code on a cafe table saves every customer from asking for the password. A vCard code on a business card puts you into someone’s contacts with one tap instead of a manual entry they will never do. A payment or menu code turns a poster into a checkout.
Because static codes cost nothing to make and never expire, they are the cheapest bridge ever built between print and the internet. Making them well matters too: high contrast, an adequate quiet zone, and the right error-correction level are the difference between a code that scans from across the room and one that frustrates people. This QR code generator handles all of that for you automatically. For the full technical history, the Wikipedia article on QR codes covers the standard in depth.
QR code
questions,
answered.
Short answers to the things people ask most before printing a code.
Do QR codes made with this generator expire or track scans?
No. This tool creates static QR codes: your link, text, or contact details are encoded directly into the black-and-white pattern itself. There is no redirect server, no scan counter, and nothing to expire. A printed QR code from this generator keeps working for as long as the content it points to stays valid, and nobody can track who scans it.
Will my QR code still scan if I put a logo in the middle?
Yes, as long as you use a medium or high error-correction level. QR codes are designed to survive damage: at error-correction level H, up to 30 percent of the code can be covered or damaged and it still scans. When you upload a logo, this generator suggests level Q or H automatically, keeps the logo small and centered, and puts it on a clean white background so scanners read the code reliably.
How much information can a QR code hold?
A maximum-size QR code (version 40) holds up to 2,953 bytes of data — or 4,296 characters if your text fits the alphanumeric character set. In practice, shorter is better: compact codes scan faster and work at smaller print sizes. This generator automatically picks the smallest QR version that fits your content, so you always get the cleanest possible code.