QR Code Generator
Generate QR codes for URLs, WiFi passwords, email addresses, vCard contacts, or plain text. Choose your size and error correction level, then download as a PNG. Free, instant, no sign-up, no watermark — everything runs locally in your browser.
Generated locally in your browser — nothing is uploaded.
How to Create a QR Code
- Select the type of QR code — URL, Text, WiFi, Email, or vCard — using the tabs.
- Fill in the relevant fields (URL, network name, contact details, etc.).
- Choose your preferred size and error correction level, then click Generate QR Code and download the PNG.
What Is a QR Code?
A QR (Quick Response) code is a two-dimensional barcode that any smartphone camera can read. Invented in 1994 by Denso Wave for tracking automotive parts, QR codes went mainstream after the COVID-19 pandemic normalized contactless menus, payments, and check-ins. Today they appear on business cards, product packaging, restaurant tables, event badges, and anywhere a URL or data payload needs to be shared without typing.
Under the hood, a QR code encodes data as a grid of black and white modules (squares). The pattern includes finder patterns (the three square corners), a timing pattern, and alignment markers that allow scanners to read the code even at an angle or from a curved surface. The remaining modules carry the actual data plus error correction codewords based on Reed-Solomon coding — the same algorithm used on CDs and barcodes.
QR codes exist in 40 versions (sizes), from a 21×21 grid (Version 1, holds ~25 characters) to a 177×177 grid (Version 40, holds ~3,000 characters). This generator automatically selects the smallest version that fits your data, keeping the code as clean and scannable as possible.
Frequently Asked Questions
How do I create a QR code? ▼
Select a type (URL, Text, WiFi, Email, or vCard), fill in the fields, then click Generate QR Code. The code appears instantly. Click Download PNG to save it.
What can a QR code contain? ▼
QR codes can encode URLs, plain text, WiFi credentials (SSID, password, security type), email addresses with pre-filled subject and body, vCard contact information, phone numbers, SMS messages, and more. This generator covers the most common use cases.
Is there a limit to how many QR codes I can create? ▼
No. This tool runs entirely in your browser — there is no server-side processing, no account required, and no usage limits. You can generate as many QR codes as you need for free.
What is error correction level? ▼
Error correction allows a QR code to be scanned even if part of it is damaged or obscured. Level L recovers 7% data loss, M recovers 15%, Q recovers 25%, and H recovers 30%. Higher levels make the code denser and harder to scan in low light, but more robust. Use M for most uses; H if you plan to print a logo over the center.
What size should I choose for my QR code? ▼
256 px works well for web and digital use (emails, presentations, screens). For print, use 512 px or larger — the minimum recommended print size is 2 cm × 2 cm. Smaller print sizes risk scan failures, especially with high error correction levels.
Can I put a logo in the center of the QR code? ▼
Yes, but you need a photo editor (e.g., Canva, Photoshop) to overlay the logo after downloading. Set error correction to H first — this gives up to 30% damage recovery, meaning a centered logo of roughly 15–25% of the QR area will still allow reliable scanning.
Is a QR code permanent? ▼
Static QR codes (like the ones this tool creates) are permanent — they encode the data directly and cannot be changed after generation. If you need to update a URL later, use a URL shortener or 'dynamic QR' service that redirects. The QR code then points to the shortener, not the destination.
Will my data be uploaded or stored? ▼
No. QR code generation happens entirely inside your browser using the open-source qrcode library. Nothing you type is sent to any server. You can verify this by watching the Network tab in browser DevTools — zero requests are made when you generate.
What is a WiFi QR code? ▼
A WiFi QR code encodes your network name (SSID), password, and security type in the format WIFI:S:NetworkName;T:WPA;P:Password;; — a standard recognized by iOS, Android, and most QR scanner apps. Scanning it lets guests join your network without typing the password.
What is a vCard QR code? ▼
A vCard QR code encodes a contact in the vCard 3.0 format — name, phone, email, company, and website. Scanning it prompts the phone to save the contact directly. It is widely used on business cards and badges.