QR Code Guides
Making a QR code takes ten seconds. Making one that people actually scan — right size, right contrast, right placement — takes a little know-how. These guides cover the most common uses:
Do QR Codes Expire? Static vs dynamic codes, why "free" codes die after two weeks, and how to make codes that last forever. QR Code Size Chart for Printing Minimum sizes by scanning distance — business cards to billboards — plus the 10:1 rule, DPI math, and quiet zones. QR Codes for Airbnb Hosts WiFi access, digital house manuals, local guides, and review cards — the one-hour setup that ends repetitive guest messages. How to Make a QR Code Menu for Your Restaurant Hosting your menu, sizing codes for table tents, testing under dim lighting, and why you should keep a few paper menus anyway. QR Codes on Business Cards What to link to, the 0.8-inch minimum size, why foil ink ruins codes, and the one test that saves you a reprint. QR Codes for Weddings and Events RSVP forms, guest photo sharing, registry links, matching codes to your stationery colors, and avoiding expiring "dynamic" codes. Why Isn't My QR Code Scanning? 9 Fixes The nine causes of scan failures ranked from most to least common — size, contrast, glare, quiet zones — with the exact fix for each. How to Scan a QR Code on Any Phone iPhone, Android, older phones — plus the trick nobody knows: scanning a code that's on your own screen. Are QR Codes Safe? Scams and the 3-Second Check How quishing and sticker-swap scams actually work, and the one habit — reading the domain preview — that defeats nearly all of them. QR Codes for Small Business: 12 Uses That Pay Off Review cards, guest WiFi, menus, booking, invoices — twelve practical uses ranked by payoff, with the placement and labeling rules that make them work. QR Codes for Real Estate Signs and Open Houses Yard-sign sizing for sidewalk vs curb scanning, what to link, open house sign-ins, and the dead-listing mistake to avoid. Guest WiFi QR Codes: The Right Way to Set It Up Why a guest network comes first, where to display the code in cafés, offices, and homes, and what happens when you change the password. QR Code Colors and Branding Yes, codes can match your brand — dark-on-light rules, the inversion mistake, the white-plate trick, and the grayscale squint test. Printing QR Codes on Stickers and Labels Sizes, matte vs gloss, home printing vs sticker services, outdoor durability, and the one-sticker proof test that prevents reprints. QR Codes for Churches and Nonprofits Giving codes in bulletins and on screen, newcomer and volunteer sign-ups, and the mistakes that quietly cost donations. QR Codes for Teachers and Classrooms Worksheet help codes, listening centers, scavenger hunts, parent sign-ups, sub plans — plus Chromebook and school-WiFi realities. QR Code File Formats: PNG vs SVG Which download button to press — PNG for screens, SVG for print — resolution math, and why JPG quietly ruins QR codes. QR Codes on Product Packaging What to link, sizes and placement on boxes, jars, and bags, curved-surface rules, and keeping codes alive for the shelf life.Have a use case you'd like a guide for? Tell us — we add guides based on what readers ask.
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