What types of content can I encode in a QR code?

You can encode plain URLs, plain text, Wi-Fi network credentials (network name, password, and security type in the format scannable by phone cameras), and vCard contact information that opens directly in the phone's contacts app when scanned. QR codes can technically store any text data up to around 3,000 characters for alphanumeric content, though very long content produces denser codes that are harder to scan reliably.

How large does a QR code need to be to scan reliably?

For printed materials, a minimum size of 2 cm × 2 cm (about 0.8 inches × 0.8 inches) is recommended for codes scanned at close range, such as on business cards. For codes intended to be scanned from a distance (like signage or posters), scale up proportionally. As a general rule, the scanning distance should not exceed 10 times the code's physical width. Higher error correction levels produce slightly larger codes with better damage tolerance.

What is QR code error correction?

QR codes include redundant data that allows them to be read even when partially obscured or damaged. There are four error correction levels: L (7% damage tolerance), M (15%), Q (25%), and H (30%). Higher levels produce denser, more complex codes. For printed materials where the code might be partially obscured, the Q or H level is recommended, especially if you plan to overlay a logo on top of the code.

Can a QR code expire?

A static QR code — which is what this generator produces — does not expire on its own. It encodes your data directly into the pattern, so it will always decode to the same text or URL. However, if you encode a URL and that webpage is taken down or moved, the code will scan successfully but lead to a broken link. Dynamic QR code services (external subscription products) let you update the destination URL without reprinting the code.

qr_code

FreeNo Upload

QR Code Generator

Generate QR codes for any URL or text instantly. Free, no watermark.

text_fieldsWord Counter qr_code_2QR Code passwordPassword scheduleTimezone travel_exploreIP Lookup document_scannerOCR location_onUS Address

URL or text

Size

How to Use

upload_file

Enter your data

Type or paste the URL, text, or data you want to encode in the QR code. QR codes can store URLs, plain text, contact info, or Wi-Fi credentials.

tune

Customize appearance

Adjust size, foreground and background colors, and error correction level. Higher error correction makes the code more resilient to damage or obstruction.

download

Download QR code

Click Download to save the QR code as a PNG image. Use it in print materials, signage, business cards, or share it digitally.

What is QR Code Generator?

The QR code generator creates QR codes from URLs, plain text, Wi-Fi credentials, and contact information (vCard format) entirely in the browser using qrcode.js, with no data sent to any server. Generated codes can be downloaded as PNG files at multiple sizes. This free QR code maker is suitable for personal use, small business signage, event materials, and developer testing.

Why use QR Code Generator?

Client-side generation means your input data — including Wi-Fi passwords and personal contact details — never leaves your device, which is a meaningful privacy advantage over server-based QR generators. Instant generation and PNG download make it practical for creating print-ready codes for physical materials without a design tool subscription. Support for vCard format lets you encode full contact information that opens directly in smartphone contacts apps when scanned.

lockComplete privacy — Your files never leave your device or browser.
boltInstant processing — No wait times, no server queues, no upload delays.
money_off100% free — No subscriptions, no credits, no hidden fees.
person_offNo registration — Start using immediately, no account needed.
devicesWorks everywhere — Any modern browser on desktop, tablet, or mobile.

How it works

Small business owners print QR codes for restaurant menus, business cards, and product packaging linking to landing pages. IT administrators generate Wi-Fi QR codes for guest networks so visitors can connect without sharing passwords verbally. Developers use it to quickly test QR code scanning functionality in mobile apps during development.

tips_and_updates

Pro Tip

Add a quiet zone (white border of at least 4 modules) around any QR code before printing — scanners need contrast between the code and surrounding material, and printing a code directly against a colored background without this margin causes scan failures.

Frequently Asked Questions

Yes — QR codes are generated entirely in your browser using qrcode.js. Your input text, URL, Wi-Fi password, or contact information is never transmitted to any server. The generation happens locally, which means even sensitive data like Wi-Fi credentials or private URLs can be encoded safely without privacy risk.

menu_book

Tutorial