QR code generator

With this fast, easy-to-use free QR code generator, you can create QR codes in seconds for sharing a website URL, any text, a phone number, an email, or even Wi-Fi login details. The QR code maker is fully customizable: you can adjust the error correction level (for more reliable scanning), the output size, the quiet zone (margin), and the dark and light colors. When your QR code is ready, you can download it as a PNG with one click—perfect for printing, posters, business cards, packaging, or web materials.

QR code generator – detailed guide

A QR code (Quick Response code) is now one of the fastest and simplest ways to help users reach a website, save a phone number, open an email, or even connect to a Wi-Fi network with a single scan. The QR code generator above is built for exactly that: a fast, convenient, practical tool that lets you create multiple QR code types for both everyday and business use.

In this long-form guide, we’ll cover what a QR code is, how it works, which types you should use (URL, text, phone, email, Wi-Fi), the most important settings (error correction, size, quiet zone, colors), and plenty of practical tips to make sure your QR code scans reliably on any phone—whether you use it online or in print.

What is a QR code, and why is it so popular?

A QR code is a two-dimensional barcode that can store far more information than a traditional one-dimensional barcode. Thanks to modern smartphone cameras and built-in scanning features, QR codes have become widely used because they are:

• No typing required (a huge benefit for URLs)

• Fast and convenient

• Effective in both print and digital formats

• Useful in marketing, logistics, customer support, and education

A well-made QR code delivers a “one-tap” experience: scan it, and you’re instantly on the website, in maps, in the contact card, or on the Wi-Fi connection screen.

What you can do with this QR code generator

This generator supports several QR code types that cover most real-world use cases.

QR code for a URL or text

This is the most common type. It’s ideal for:

• Linking to a website, landing page, or product page

• Coupon codes (as short text content)

• Opening an event page or registration form

• Sharing simple information (opening hours, address, instructions)

Tip: For URLs, enter the full address—preferably with the https:// prefix—so scanning apps reliably recognize it as a link.

QR code for Wi-Fi login

This is extremely useful for guest Wi-Fi at home, in offices, at events, or in apartments. Users scan the code and their phone offers to join the network automatically.

Typical use cases include:

• Reception desks and waiting areas

• Coworking spaces

• Airbnb/Booking accommodations

• Conferences, expos, workshops

• Shops and cafés

Important: A Wi-Fi QR code contains the SSID, security type, and password. The “hidden network” option is only needed if the SSID doesn’t appear when browsing available Wi-Fi networks.

QR code for email

With this type, scanning opens the user’s email app with a prepared message (recipient plus optional subject and body).

Useful examples:

• Fast access to customer support

• Questions about event registration

• Simplifying quote requests

• Business cards or flyers with a “Contact us” call-to-action

Tip: Keep the subject short, and use the message field as a brief prompt rather than a long text.

QR code for a phone number

Perfect for quick calls: after scanning, the phone jumps to the call screen.

Useful for:

• Service and appointment booking

• Customer support

• Call centers and dispatch

• On-site contacts

Tip: Using international format (for example, +36…) improves compatibility, especially if visitors from other countries may scan the code.

Error correction (ECC): what it means and which level to choose

One of the biggest advantages of QR codes is built-in error correction. This means a QR code can remain readable even if it is partially damaged, scratched, or partly covered. The generator offers these ECC levels:

• L (7%): lower correction, more capacity for content

• M (15%): a strong default for general use

• Q (25%): more stable for print or tougher conditions

• H (30%): the most robust, but reduces maximum data capacity

When should you use a stronger level?

• When the QR code will be printed very small

• When it may get dirty or scratched

• When it’s placed on packaging, outdoors, or on posters

• When you plan to put a logo or graphic over the code (if you add that later)

General recommendation: M is usually enough for digital use, while Q or H is often best for “scan-first-time” reliability in print.

Output size (px): how to choose the right value

Output size controls how large the QR image is in pixels. This matters if:

• You’ll use it on a website (300–600 px is common)

• You’ll print it (physical size matters most)

• You’ll resize it in a design tool

Practical guidelines:

• Web use: 256–512 px is typically enough

• Print: generate larger, then scale in your print layout (the key is keeping modules clean and distinct)

Important: If the QR code is too small, phones may struggle to focus, and modules can blur together.

Quiet zone (margin): the secret to reliable scanning

The quiet zone is the empty margin around the QR code. Many QR codes fail because text or graphics are placed too close to the code. Most scanners expect a clear “breathing space” around the edges.

General recommendation:

• Use at least a 4-module quiet zone (this generator’s default)

• For print, avoid reducing it unless you truly must

Without enough quiet zone, the camera has trouble detecting the code boundary and scanning becomes slower or unreliable.

Colors: you can get creative, but keep strong contrast

This generator lets you choose dark and light colors, which is great for matching brand style—but follow these rules:

• Always keep strong contrast between dark and light colors

• Light background + dark modules is the most reliable

• Inverted codes (light modules on dark background) can work but aren’t always scanner-friendly

• Avoid “light dark” colors (like pale gray), which reduce recognition

• In print, colors can shift—especially on matte paper

For maximum compatibility, black on white is still the safest choice.

Download as PNG: why it’s useful and how to use it

The “Download PNG” button saves your QR code as an image file, which is useful for:

• Uploading to a website

• Inserting into print designs

• Presentations or PDFs

• Packaging, stickers, labels

• Email signatures or digital business cards

Tip: For print, generate a larger pixel size so scaling doesn’t degrade clarity.

Privacy: why “runs in your browser” is an advantage

Many people avoid online QR generators because they don’t know what happens to the data they enter. A local, client-side generator offers clear benefits:

• Your content is not sent to a server

• It’s fast (no network delays)

• It can work in restricted environments

• It feels safer for passwords or internal data (like Wi-Fi credentials)

Still, use common sense: don’t generate sensitive data on a public computer, and don’t share Wi-Fi codes where you don’t want others to connect.

Common reasons a QR code won’t scan

If a QR code doesn’t work, the issue is usually usage or environment, not the generator. Typical problems include:

• The code is too small (not enough resolution)

• No quiet zone, or graphics/text too close to the edges

• Weak contrast (gray on gray)

• Blurry printing or low-quality paper

• Reflections on glossy or laminated surfaces

• The code was distorted or stretched (not kept proportional)

Quick check: test with 2–3 different phones (ideally iOS and Android). For print, test a sample print before final production.

Quick tips for a “scan-first-time” QR code

• Keep at least a 4-module quiet zone

• Use high contrast (black on white is safest)

• Don’t make it too small (web: 256–512 px; print: comfortably large)

• Always use full URLs (with https://)

• For marketing, consider a short, measurable destination URL (a dedicated landing page)

• Print a test copy and scan it before producing in bulk

This QR code generator is a fast, practical tool for creating QR codes for URLs, text, Wi-Fi login, email, or phone numbers. By adjusting error correction, output size, quiet zone, and colors, you can make QR codes that scan reliably in any environment—on the web, in print, on posters, or on packaging. For best results, follow the fundamentals: choose an adequate size, maintain strong contrast, and always leave enough empty space around the code.