What types of data can I encode?

QR codes can encode: URLs (most common), plain text, contact cards (vCard), email addresses with subject/body, phone numbers, SMS templates, WiFi credentials (network name + password), geolocation coordinates, calendar events, and Bitcoin/cryptocurrency addresses. The encoding is automatic — you provide the data, the generator creates the appropriate QR code format.

Are QR codes free to use?

Yes — QR codes are an open standard (ISO/IEC 18004) and free to generate, distribute, and scan. There are no licensing fees, no usage limits, and no per-scan charges. You can generate unlimited QR codes for personal, commercial, or marketing use without restrictions.

How much data can a QR code hold?

Up to 4,296 alphanumeric characters or 7,089 numeric digits in the largest version (Version 40, 177×177 modules). For practical use, keep data short (URLs, contact info) so the resulting code is small enough to scan quickly. Longer content requires denser codes which are harder to scan from distance or with low-quality cameras.

What's the best size for printing?

Minimum 2×2 cm (0.8×0.8 inch) for short URLs at hand-held scanning distance. For business cards, posters, or signage, scale proportionally — a code visible from 1 meter needs to be ~10×10 cm. Always test scan-ability with multiple phones before mass-printing. Higher error correction levels allow smaller codes but increase density.

What does error correction do?

QR codes include redundant data so they can still be scanned even when partially damaged or obscured. Four levels: L (~7% recoverable), M (~15%, default), Q (~25%), H (~30%). Higher correction = denser code but more reliable scanning. Use H for outdoor signage exposed to weather, L for clean digital displays, M for general use.

Can I customize the QR code design?

Yes — many generators (including this one) support custom colors (foreground and background), embedded logos in the center (uses error correction redundancy), and rounded module styles. Always test customized codes by scanning with multiple phones; aggressive customization can reduce scan reliability, especially with logos that obscure too many modules.

Is the data sent to any server?

No. QR code generation happens entirely in your browser. Your data never leaves your device — safe for confidential URLs, internal WiFi passwords, private contact info, or any data you don't want logged. The generated PNG/SVG image exists only in your browser memory until you save or discard it.

QR Code Generator

Generate QR codes from text, URLs, or contact info online. Free QR code generator with custom colors, sizes, and PNG download.

Image Tools Generators

Instant results

Content to Encode

0/2000 characters

Quick Presets:

Size

Error Correction

Foreground

Background

QR Code Preview

Enter content to generate QR code

About QR Codes

QR (Quick Response) codes are two-dimensional barcodes that can store URLs, text, contact information, WiFi credentials, and more. They can be scanned using smartphone cameras.

Error Correction Levels:

L (Low) - ~7% recovery capacity, smallest QR code
M (Medium) - ~15% recovery capacity, good default
Q (Quartile) - ~25% recovery capacity
H (High) - ~30% recovery capacity, best for printed/damaged codes

Common Uses:

Website URLs and links
Contact information (vCard)
WiFi network credentials
Payment information
App store links

How to Use QR Code Generator

Enter your data

Type or paste the URL, text, contact info, or other data you want to encode. The QR code updates instantly as you type — no submit button needed.

Customize appearance (optional)

Adjust the size, foreground color, background color, error correction level, and optional center logo. Higher error correction allows smaller codes and embedded logos.

Test the QR code

Scan the generated code with your phone's camera before downloading. Verify it decodes correctly to your intended data — especially important after customizing colors or adding logos.

Download or copy

Click Download to save as PNG (raster, fixed size) or SVG (vector, infinite scaling). Use the SVG for printing at any size; PNG for web embedding, social media, or quick sharing.

When to Use QR Code Generator

Linking print media to online content

Add QR codes to business cards, brochures, posters, restaurant menus, event flyers, or product packaging so readers can instantly access your website, social media, app download page, or product page. Eliminates the friction of typing long URLs and lets you measure offline-to-online conversion via UTM-tagged links.

Sharing WiFi credentials

Generate a WiFi QR code (network name + password + encryption type) for your office, home, or event. Guests scan with their phone's camera and connect automatically — no typing complex passwords. Works on iOS 11+, Android 10+, and most modern devices. Frame and display in conference rooms, cafes, or rentals.

Contactless menus and ordering

Restaurants and venues can replace physical menus with QR codes linking to digital ordering systems or PDF menus. Customers scan, browse, and order from their own phones. Reduces print costs, allows instant menu updates, and provides a hygienic alternative to shared physical menus — adoption surged during COVID-19 and remains popular.

Payment and tipping

Mobile payment apps (PayPal, Venmo, Cash App, Stripe) generate QR codes for accepting payments. Scan-to-pay eliminates manual input of recipient details. Useful for street vendors, freelancers, charity collections, tip jars, and any peer-to-peer payment scenario where typing addresses is error-prone.

QR Code Generator Examples

Encoding a URL

Input

https://treasure.tools/json-beautifier

Output

[QR code image: 21×21 modules at version 1, error correction M]

A short URL fits in the smallest QR code (Version 1, 21×21 modules). Easy to scan from up to ~30cm away with a typical phone camera. Add UTM parameters (?utm_source=poster&utm_campaign=launch) to track which physical location drove visits — the QR generator handles longer URLs but the resulting code becomes denser.

WiFi credentials

Input

WIFI:T:WPA;S:GuestNetwork;P:welcome2024;;

Output

[QR code image: scannable WiFi config]

WiFi QR codes use a special URI format (WIFI:T:auth;S:ssid;P:password;;). When scanned by a modern phone, the OS prompts to join the network automatically. T=encryption type (WPA, WEP, or nopass for open), S=network name, P=password. Much easier than typing complex passwords on a phone keyboard.

Contact card (vCard)

Input

BEGIN:VCARD\nVERSION:3.0\nFN:Jane Doe\nORG:Acme Corp\nTEL:+15551234567\nEMAIL:jane@acme.com\nEND:VCARD

Output

[QR code image: scannable contact]

vCard format (RFC 6350) creates a QR code that prompts the scanner's phone to add a new contact. Include name (FN), organization (ORG), phone (TEL), email (EMAIL), and optionally photo (PHOTO), website (URL), or address (ADR). Print on business cards for one-tap saving — far more reliable than asking someone to type your details.

Tips & Best Practices for QR Code Generator

1.Use error correction level Q (25%) for printed materials — survives folds, smudges, and partial damage. Use level L (7%) for clean digital displays where reliability isn't a concern. Higher levels increase density but improve scan reliability.
2.Test before printing! Scan with multiple phones (iOS and Android, old and new) and various lighting conditions. A QR code that scans on your iPhone might fail on someone's older Android. Distance matters too — verify scan-ability at the expected use distance.
3.Keep the 'quiet zone' (white border around the code) intact. Even though it looks like wasted space, scanners need it to detect the code boundaries. Don't crop tightly to the modules — leave at least 4 modules of white border for reliable scanning.
4.When using custom colors, ensure high contrast between foreground (modules) and background. Black-on-white scans best; dark-on-light works but reduces scan reliability. Reverse colors (light modules on dark background) often fail to scan — most scanners assume dark-on-light. Always test reversed designs.
5.Embedded logos work but reduce scan-ability. Use level H (30%) error correction when adding logos so the code can survive the 'damaged' center. Keep logos to ~20% of code area — anything larger likely won't scan. Position logos centrally, not over the position-detection patterns in the corners.
6.For URLs, use a short URL service (Bitly, your own short domain) before generating the QR code. Shorter URLs = simpler, smaller, faster-scanning codes. Plus, you can change the destination later without reprinting if you used a URL shortener that allows redirect updates.

Frequently Asked Questions

A QR (Quick Response) code is a 2D barcode that encodes text, URLs, contact info, WiFi credentials, or other data into a square pattern of black and white modules. Smartphones can scan QR codes through their cameras, instantly decoding the data — making them convenient for sharing links, payment info, event details, and more without manual typing.

QR Code Generator

About QR Codes

Error Correction Levels:

Common Uses:

How to Use QR Code Generator

Enter your data

Customize appearance (optional)

Test the QR code

Download or copy

When to Use QR Code Generator

Linking print media to online content

Sharing WiFi credentials

Contactless menus and ordering

Payment and tipping

QR Code Generator Examples

Encoding a URL

WiFi credentials

Contact card (vCard)

Tips & Best Practices for QR Code Generator

Frequently Asked Questions

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