QR Code Generator

A QR (Quick Response) code is a two-dimensional barcode that stores data — usually a link, text or contact details — as a grid of black and white squares. A phone camera reads the whole grid at once, which is why QR codes scan so quickly.

Data is encoded into a pattern of modules (squares) along with error-correction information. The three large squares in the corners help a scanner find and orient the code; it then reads the modules, corrects any damaged areas using the redundancy built in, and decodes the original data.

Yes. This generator is completely free with no sign-up and no watermark. Static QR codes you create never expire and can be used commercially.

Static QR codes never expire — the data is encoded directly in the image, so they work forever. Dynamic QR codes point to a short link whose destination you can change; they only stop working if the redirect service is shut down.

A dynamic QR code encodes a short redirect URL instead of the final content. Because the destination lives on a server, you can edit it or track scans without reprinting the code. It requires an account and backend service.

A static QR code stores the data permanently in the image and cannot be edited or tracked. A dynamic QR code stores a redirect link, so its destination can be changed at any time and scans can be counted. Static is best for fixed content; dynamic is best for marketing.

A QR code can hold up to about 4,296 alphanumeric characters, 7,089 digits or 2,953 bytes at the largest version with the lowest error correction. In practice, shorter content scans faster and more reliably, so links are preferred.

Level M (about 15% recovery) is a good default. Use H (about 30%) when adding a logo or printing on surfaces that may get scratched or dirty. Higher correction makes the code denser but far more resilient.

Yes. Upload a logo and it is placed in the centre with a clear safe zone. Keep it under about 25–30% of the code and use error-correction level H so the scanner can still recover the covered modules.

Not if it is sized correctly. QR codes have built-in redundancy, so a centred logo covering up to ~30% at error-correction level H is recoverable. The built-in scan-quality checker warns you if the logo is too large.

Use SVG for print and anything that will be resized — it is vector and stays sharp at any size. Use PNG for digital use and transparent backgrounds. Avoid JPG for QR codes because its compression can blur the edges.

A common rule is a minimum of 2 × 2 cm (about 0.8 in) for close scanning, scaling up with distance — roughly 1 cm of code per 10 cm of scan distance. Always keep a clear quiet-zone margin around it.

Only with a dynamic QR code, where scans pass through a redirect that records analytics such as total scans, location and device. Static QR codes cannot be tracked because they contain no server link.

The QR code itself is just encoded data — it is the destination that matters. Always check where a code leads before acting, prefer HTTPS links, and be cautious of codes in public places that could have been replaced. This tool includes a security check for links.

A QR code cannot contain a virus by itself; it only stores data. The risk comes from what it links to — a malicious website or app download. Scanning is safe; acting on an untrusted destination is what to avoid.

Choose the WiFi type, enter your network name (SSID), password and security type, and a scan-to-connect QR code is generated. Guests scan it to join your network without typing the password.

Select the URL type, paste your link, customise the colours and download. The code will open your website in the scanner’s browser.

Pick the Contact (vCard) type and fill in name, phone, email, company and address. Scanning the code lets someone save your details straight to their contacts — a digital business card.

Yes. The bulk generator takes a list (one entry per line or a CSV) and produces a QR code for each, downloadable together as a ZIP — ideal for tables, products or events.

Any colours, as long as the foreground (modules) is clearly darker than the background. Aim for a contrast ratio of at least 4.5:1. Avoid light-on-dark (inverted) codes, which some scanners reject.

Yes, linear and radial gradients are supported. Keep both gradient colours dark enough against the background so contrast stays high and the code remains scannable.

The most common causes are low contrast, an oversized logo, too small a quiet-zone margin, blurry printing or a code that is physically too small. The scan-quality and validation panels flag each of these.

Modern phone cameras handle low light well, but high contrast and a decent size help a lot. For dim environments, use black on white and avoid coloured backgrounds.

Yes. Download the SVG (vector) for the sharpest print at any size, keep a clear margin, and use error-correction level Q or H so small print imperfections do not stop it scanning.

The quiet zone is the empty margin around a QR code — recommended at least four modules wide. It separates the code from surrounding graphics so scanners can isolate it. Removing it is a common cause of scan failure.

Choose the WhatsApp type, enter the number with its country code and an optional pre-filled message. Scanning opens a WhatsApp chat with you, ready to send.

Yes, up to its capacity. Longer content makes the code denser and harder to scan, so for large data (like a full profile) it is better to encode a link to a hosted page.

Yes. Every modern iPhone and Android phone can scan QR codes directly from the camera app, with no separate app needed. Older devices may need a free scanner app.

Use the built-in scanner: upload or drag in an image, or use your camera, and the decoded content appears instantly — all processed privately in your browser.

Yes. QR codes are generated entirely in your browser — nothing you enter (passwords, contact details, wallet addresses) is sent to a server. Your history and favorites are stored locally on your device.

A payment QR code encodes payment details — for crypto, a wallet URI like bitcoin:address?amount=. Scanning with a compatible wallet pre-fills the payment. This tool generates crypto payment QR codes; bank/UPI payment codes are issued by your provider.

Yes. Host the PDF online and use the PDF type with its link. Scanning opens the document. QR codes store links, not files, so the PDF must be hosted somewhere accessible.

Error correction adds redundant data so the code still reads even if part is damaged, dirty or covered by a logo. The four levels — L, M, Q and H — recover roughly 7%, 15%, 25% and 30% of the code respectively.

Yes. You can restyle both the outer eye frame and the inner eye ball — square, rounded, circle or leaf — to match your brand, while keeping the code scannable.

Yes, if you keep high contrast and a clear quiet zone. Rounded modules, custom eyes and brand colours are fine; the scan-quality checker confirms the code is still reliable.

A printed static QR code lasts as long as the printed surface — the data never changes or expires. Only the destination of a dynamic QR code can change, and only if you choose to edit it.

Yes. Use the URL type with the review or form link. Customers scan it to leave a review or fill in your form — a popular tactic for restaurants and shops.

Nothing different — rounded or dot module styles are purely cosmetic. The encoded data and scannability are unchanged as long as contrast and quiet zone are maintained.

Yes. Export PNG at 512, 1024, 2048 or 4096 pixels, or download SVG for unlimited resolution. High-resolution exports are best for large prints and banners.

A centred logo covers some modules. Level H adds about 30% redundancy, enough for the scanner to reconstruct the covered area, so the code still reads with the logo in place.

Yes. The built-in barcode generator creates Code 128, Code 39, EAN-13, UPC-A, ISBN and ITF barcodes with automatic check digits, downloadable as SVG.

A traditional barcode is one-dimensional and stores a small number along its width. A QR code is two-dimensional and stores far more data — links, text, contacts — and can be scanned from any angle.

Scanning itself works offline — the data is in the code. You only need internet if the decoded content is a link that opens a website. WiFi, text and contact QR codes work entirely offline.

Yes. Enable transparent background to export a PNG with no background, so the code sits cleanly on coloured designs or photos. Make sure whatever sits behind it stays light for contrast.

Use the Event type with the title, date, time and location. Scanning prompts to add the event to the user’s calendar.

Yes. QR Code is an open standard, and codes you generate here are free to use anywhere, including commercially, with no licensing fees.

Yes. Your recent codes are kept in history (up to 100) and you can save favorite designs and templates — all stored locally in your browser.

QR codes range from version 1 (21×21 modules) to version 40 (177×177 modules). Higher versions hold more data but are denser and need a clearer, larger print to scan reliably.

The foreground (the modules) must be darker than the background. Scanners expect dark-on-light; inverted light-on-dark codes often fail, so this tool warns you if the colours are reversed.

Yes, but size it for the scan distance and use high error correction. Large outdoor codes should use level Q or H and a generous quiet zone so they read from a distance and survive weathering.