QR Code Generator

Web Tools

Generate customizable, high-resolution QR codes for URLs, Wi-Fi networks, text, contacts, and emails with PNG/SVG export.

Type:

Configure QR Payload

Website / Landing Page URL

Design & Color Customization

Color Presets

Foreground Color

Background Color

Resolution

Error Correction

Margin (Quiet Zone)

Center Logo Overlay

Upload Logo Image

Scannable QR Code Output

Encoded QR Payload

https://techtube.dev/tools

Client-Side Privacy Guarantee

100% Private & Client-Side: All QR code graphics and Wi-Fi passwords are generated locally inside your browser memory. Nothing is ever sent to a server.

What is this?

A versatile client-side QR Code Generator that instantly converts URLs, Wi-Fi configuration credentials, plain text, email messages, phone numbers, and vCard contact cards into scannable QR codes. Features full customization of colors, margin size, error correction levels (L, M, Q, H), center logo overlays, and instant PNG/SVG file downloads.

Key Features & Concepts

Multi-Format Data Inputs: Plain Text, URLs, Wi-Fi Credentials (SSID, Password, Encryption), Emails, Phone Numbers, and vCards
High-Resolution Canvas & SVG: Render crisp vectors and scalable pixel-dense QR graphics up to 1024px
Custom Styling & Branding: Customize foreground and background colors with hex pickers and preset themes
Error Correction Tuning: Adjust error correction levels from Low (7%) up to High (30%) for damaged scan resilience
Center Logo Overlay: Upload custom logos or select preset icons to place in the center of the QR matrix
One-Click Vector & Image Exports: Download PNG, SVG, or copy SVG vector code directly to your clipboard
100% Client-Side Engine: Built using pure client JavaScript APIs, ensuring credentials and Wi-Fi passwords remain strictly private

How to Use

Select your data type (URL, Wi-Fi, Text, Email, Phone, or vCard Contact).
Enter your content or network parameters into the input fields.
Customize module colors, background, quiet zone margin, and canvas resolution.
Optionally upload a custom logo image or select a preset icon to display in the center.
Click "Download PNG" or "Download SVG" to save your generated QR code graphic.

Common Use Cases

Small Business Owners creating Wi-Fi access cards and menu links for customers
Event Organizers generating badge check-in codes and feedback form links
Web Developers embedding vector SVG QR codes into responsive websites

Practical Examples

Generating a guest Wi-Fi connection QR code: WPA2 network credentials for instant smartphone joining
Creating vCard contact QR codes for business cards and portfolio websites
Converting landing page URLs and social media links into scannable promotional graphics

Limitations & Technical Notes

QR codes can store up to ~3,000 alphanumeric characters, but shorter inputs create less dense, easier-to-scan codes.
Adding large logos over high error-correction levels works best when maintaining contrast with the module grid.

Frequently Asked Questions

Are Wi-Fi passwords safe when generating QR codes here?

Yes! The QR matrix is calculated entirely in your local browser runtime using JavaScript canvas APIs. No Wi-Fi passwords or credentials ever leave your device.

Which error correction level should I choose?

Level M (15%) is standard for most URLs. Choose Level H (30%) if you plan to add a logo overlay in the center or print the code on surfaces that might get scratched.

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