Construct scannable QR grids, data matrices, text payloads, and vector web-links into customized QR codes with zero registration parameters.
Dudi QR Code Generator is a fast, 100% free, browser-based tool from Dudi PDF Editor that instantly creates scannable, beautiful, custom QR codes for any text, URL, phone number, email, WiFi credentials or vCard contact. Whether you need a QR code for a business card, a restaurant menu, a product package, a wedding invitation, a poster, a website, a WhatsApp chat link, or a UPI payment address, this tool does all of it without installing software, creating an account, verifying an email or paying any hidden fee. Unlike most online QR generators, your text or URL is never uploaded to a remote server. The entire generation runs inside your browser using the well-known qrcode-generator library — your data is encoded into a 2D barcode on your own device, and the resulting canvas is drawn at 2× resolution for crisp print quality. That means your WiFi password, private URLs, phone numbers and confidential content never leave your computer or phone. There is no signup, no email required, no watermark on the QR data itself, no daily limit and no page-count restriction. The generator is built around a fast, customizable workflow. Type or paste your text in the input area, then choose from five beautiful design styles: Classic (sharp square modules — the most universally scannable), Dots (rounded dot modules for a modern look), Rounded (rounded square modules for a soft touch), Gradient (a two-color gradient from purple to pink for eye-catching social media use), and Logo (a Dudi-branded QR code with a small logo in the center — perfect for presentations and promotional material). All five designs are tested to remain scannable by standard QR readers on any smartphone. You can customize the foreground color (default pure black), background color (default pure white), and the QR size from 100 to 2000 pixels — choose 300 to 500 px for screen display, 500 to 800 px for business cards, and 1000 to 2000 px for posters, packaging and large-format print. Error correction can be set to Low (7%), Medium (15% — the recommended default), Quartile (25%) or High (30%) — higher levels create denser codes that resist damage from scratches, stickers or logos on top, but hold slightly less data. An optional frame label field lets you add a small "SCAN ME" caption below the QR for extra visual clarity. When you click Generate QR Code, Dudi QR Code Generator renders your QR at the exact pixel size you requested, renders each module as a whole number of pixels to avoid blurring, draws a proper 2-module white quiet zone around the code, and shows the result in a live preview panel with a soft shadow for a polished look. Every generated QR code carries a subtle glassy "Dudi PDF Editor" watermark in the bottom-right corner — this watermark is baked directly into the downloaded PNG so it survives printing, sharing and screenshots, and it doubles as a clickable hyperlink to dudipdfeditor.in when the PNG is opened in a browser or PDF viewer. The watermark is intentionally positioned in the quiet zone's outside margin so it never overlaps any QR module — scanning remains 100% reliable. When you are happy with the look, click Download PNG to save the QR, or click Share to send the actual PNG file directly to WhatsApp, Telegram, Email or any other app via your device's native share sheet. On desktop where Web Share API is not available, the PNG is downloaded so you can attach it manually. The downloaded file is always named Dudi PDF Editor QR Code.png, and if you generate another QR in the same session it becomes Dudi PDF Editor QR Code (2).png and so on, so your files stay clearly identifiable. Because everything runs locally, the tool often keeps working even on a weak connection after the first page load. The layout is fully responsive, so the input box, five-design picker, color pickers, size and error-correction selectors, frame label input, preview canvas and action buttons all stay easy to use on a small Android phone as well as on a large desktop monitor. If you need more tools, Dudi PDF Editor also offers Password Generator, Image Converter, Image Compressor, Image Resizer, Image Upscaler, Image Crop, Background Remover, Grayscale Image, Passport Photo Maker, A4 Binder, Word Maker, Excel Maker, and the full PDF tool suite (PDF to Excel, Excel to PDF, PDF to Word, PDF to PowerPoint, PDF to Text, OCR, Word to PDF, JPG to PDF, Merge PDF, Split PDF, Compress PDF, Rotate PDF, PDF Page Numbers, Sign PDF, Protect PDF, Unlock PDF, Watermark PDF, Crop PDF, Extract Images) that all run locally in your browser with the same no-upload guarantee.