QR & Barcode Studio
Generate customized vector QR codes for WiFi, vCards, WhatsApp, and scan 1D/2D barcodes with camera or image upload.
QR Code Reader
Scan and decode QR codes instantly in your browser via uploaded images or live device camera. 100% private, client-side decoding with zero cloud uploads.
Barcode Reader
Scan 1D and 2D barcodes online using your webcam or uploaded image files. Supports Code-128, EAN, UPC, and Codabar with audio beep and CSV history export.
Barcode Generator Studio
Generate industrial Code-128, UPC-A, EAN-13, EAN-8, and ITF barcodes. Download 300 DPI PNGs, batch ZIP archives, or printable A4 sticker label sheets for free.
vCard Business Card QR
Create interactive vCard digital business card QR codes with phone preview mockups. Instantly save names, phone numbers, emails, and addresses to contacts.
MeCard Quick Contact QR
Generate lightweight MeCard contact QR codes for quick mobile phonebook import. Customize colors, add center brand logos, and export vector SVG.
Email Template QR
Generate email mailto QR codes with pre-filled recipient addresses, subject lines, and message body templates for instant 1-tap client inquiries.
Phone Call QR
Create direct phone dialer QR codes (tel:). When scanned with any mobile camera, it automatically prompts instant 1-tap calling with zero dialing mistakes.
Calendar Event QR
Generate iCalendar-compliant VEVENT QR codes for webinars, conferences, and weddings. Adds events directly to Google, Apple, and Outlook calendars.
Social Media Profile QR
Create custom QR codes for Instagram, X (Twitter), YouTube, TikTok, LinkedIn, and GitHub profiles with embedded brand logos and live mobile preview cards.
Crypto Payment QR
Generate verified cryptocurrency payment QR codes for BTC, ETH, SOL, USDT, DOGE, and LTC with pre-filled invoice amounts and crypto wallet mockups.
Why Use CrazyTools4U QR & Barcode Studio?
Traditional online converters and utilities require you to upload your files to remote servers. This introduces bandwidth lag, security liabilities, and privacy exposure for sensitive files.
All utilities in the QR & Barcode Studio suite on CrazyTools4U run entirely on the client side using WebAssembly (WASM), HTML5 Canvas pipelines, and Web Workers. Your raw files never leave your device memory, ensuring complete zero-server privacy and lightning-fast execution.