usbRecognized - Free online printer test tool – Quality & Troubleshooting

Hey everyone! 👋 We're excited to share Printer Test — a brand-new addition to the usbRecognized toolkit. If you've ever dealt with a printer that won't print, prints the wrong colors, or produces mysterious white lines, this one's for you. It's a completely free, browser-based tool that gives you a full printer diagnostic center — no downloads, no installs, no digging through system settings. Here's what it does: 🖨️ Print a comprehensive test page — Includes 11 test elements: text at multiple sizes, RGB/CMYK color bars, grayscale gradient, alignment crosshairs, border/margin marks, fine line patterns, a physical ruler, reference images, barcode/QR code, grid, and watermark visibility. One click and you get everything you need to spot print quality issues. 🔍 Problem-driven diagnosis — Tell us what's wrong (missing colors, white lines, blurry text, alignment issues, uneven printing) and we generate a targeted test page with only the relevant elements, then guide you through a checklist to pinpoint the cause. 🧪 Nozzle check — Print dense C/M/Y/K line patterns to check print head health. White gaps? Clogged nozzles. The tool walks you through next steps. 🔌 USB printer detection (Chrome/Edge) — Use WebUSB to check if your USB printer is recognized, read its vendor/model info, and confirm the connection. The test page works with all printers (HP, Canon, Epson, Brother, Lexmark — any brand, any type including inkjet, laser, label, and thermal) because it uses the browser's native print dialog. Everything runs locally in your browser — no data is ever uploaded. We'd love to hear your feedback and what other diagnostic tools you'd like to see next!