Rahman Aliyev
QRolling Director | Frontend Developer
Rahman Aliyev is a frontend engineer and the creator of Qrolling, a dynamic QR code generator with advanced customization and scan analytics. With 6+ years of experience building web products and running SEO projects, he writes about QR codes, digital marketing, and practical technology for small businesses.
Articles by Rahman Aliyev
The 10 Best QR Code Generators in 2026 (Honestly Compared)
We compared the top QR code generators on pricing, free-tier honesty, design control, analytics, and expiration policies, including where each one beats us.
9 min read
Static vs Dynamic QR Codes: Which Should You Use? (2026)
The complete decision guide: how static and dynamic QR codes differ in editability, analytics, cost, and lifespan, with a table for every use case.
6 min read
Free vs Paid QR Code Generators: What You Actually Get (2026)
What's genuinely free in QR generators, what paid tiers really add, and the four fine-print traps: expiring 'free' codes, watermarks, scan limits, and export paywalls.
5 min read
QRCode Monkey Alternatives: 5 Options Compared (2026)
Love QRCode Monkey's free codes but want no ads, dynamic options, or hosted landing pages? Five alternatives compared, including what Monkey still does best.
5 min read
QR Tiger Alternatives: 5 Options for 2026
QR Tiger covers a lot of ground, but pricing, UI density, and free-tier limits push users to compare. Five alternatives ranked by what you actually need.
5 min read
Uniqode Alternatives: 5 Options When Enterprise Is Too Much (2026)
Uniqode is built for enterprise compliance and scale, and priced for it. Five alternatives for teams that need great QR codes without procurement-grade overhead.
5 min read
Flowcode Alternatives: 5 Options Compared (2026)
Flowcode's free dynamic codes and design polish are real. So are the branding on free tiers and ecosystem lock-in. Five alternatives for different priorities.
5 min read
Bitly QR Code Alternatives: 5 Options for 2026
Bitly folded QR Code Generator into its link platform: powerful for enterprises, heavy for everyone else. Five alternatives by use case, with pricing reality.
5 min read
Canva QR Code Alternatives: When the Design Tool Isn't Enough (2026)
Canva makes dropping a QR into a design a ten-second job, then stops there. Five alternatives for logos on codes, dynamic editing, analytics, and landing pages.
4 min read
Founder's note: what we shipped this week
A short weekly check-in on what landed, what we cut, and what's queued for next week, plus one user question we get every week.
3 min read
10 Creative Ways to Use QR Codes in Your Marketing Campaign
Discover innovative strategies to integrate QR codes into your marketing efforts and boost customer engagement.
5 min read
How QR Codes Are Revolutionizing Business Operations
Where QR codes actually show up in day-to-day operations: inventory, payments, employee workflows, and the quiet B2B use cases nobody blogs about.
7 min read
The Complete Guide to QR Code Design Best Practices
Master the art of creating stunning, scannable QR codes that align with your brand identity.
6 min read
Aesthetic QR Code Design Ideas and What Each One Costs
Dots, gradients, illustrated modules, tiled patterns and brand palettes, priced by what they take from detection or from the repair budget. Spend it on one idea rather than three.
6 min read
Contactless Payments: The Future of QR Technology
Explore how QR codes are transforming the payment industry and what it means for consumers.
5 min read
Step-by-Step Tutorial: Creating Your First QR Code
A beginner-friendly guide to creating professional QR codes in minutes.
8 min read
How Coffee Shops Use QR Codes for Loyalty and Mobile Ordering
A practical guide for cafés using QR codes to power loyalty programs, mobile ordering, and contactless payments — without invented numbers or borrowed brand stories.
8 min read
QR Codes in Retail: Latest Trends for 2026
Discover how retail stores are using QR codes to enhance shopping experiences.
5 min read
Healthcare Innovation: QR Codes for Patient Records
How hospitals and clinics use QR technology: wristband IDs, medication checks, equipment tracking, and the compliance questions that come with them.
7 min read
QR Codes in Education: Enhancing Student Engagement
Learn how educators are using QR codes to create interactive learning experiences.
6 min read
Hospitality Industry: QR Menus and Contactless Service
How restaurants and hotels are embracing QR codes for better guest experiences.
5 min read
Industry News: QR Code Usage Hits All-Time High
Latest statistics and trends showing exponential growth in QR code adoption.
4 min read
Best Practices for QR Code Placement and Size
Expert tips on where and how to display QR codes for maximum scan rates.
6 min read
Advanced Tutorial: Building QR Code Campaigns
Master advanced techniques for creating multi-channel QR code marketing campaigns.
12 min read
E-commerce Success: QR Codes for Product Authentication
How online retailers are using QR codes to fight counterfeiting and build trust.
5 min read
Case Study: Museum Engagement Through QR Technology
How cultural institutions are using QR codes to enhance visitor experiences.
8 min read
How Small Businesses Can Use QR Codes on a Budget
Practical tips for implementing QR codes without breaking the bank.
6 min read
The Psychology Behind QR Code Engagement
Understand why people scan QR codes and how to design for maximum engagement.
8 min read
QR Codes for Non-Profit Organizations: Driving Donations
How charitable organizations are using QR technology to increase donations and engagement.
6 min read
Mobile-First Design: Optimizing QR Code Landing Pages
Essential design principles for creating landing pages that convert QR code scanners.
7 min read
The Complete Guide to WiFi QR Codes
Everything you need to know about creating and using QR codes for WiFi network sharing.
6 min read
QR Codes in Real Estate: Virtual Tours and Property Info
How real estate professionals are using QR codes to showcase properties and generate leads.
5 min read
How to Create Multilingual QR Code Experiences
Best practices for building QR code campaigns that serve diverse language audiences.
6 min read
What Does QR Stand For? The Story Behind Quick Response
QR stands for Quick Response. How a 1994 Denso Wave project for tracking car parts on a Toyota line ended up as a square on your phone camera.
6 min read
Who Invented the QR Code, and Why Japan Got It First
Masahiro Hara, 1994, a Go board, and a survey of printed matter that produced the 1:1:3:1:1 finder ratio. Plus the part most histories skip: why Japan had a decade of ordinary use first.
7 min read
How to Use a QR Code You've Been Sent or Handed
Someone sent you a QR code. What happens when you scan a ticket, invoice, WiFi card or 2FA setup code, what to check first, and what to do if it fails.
6 min read
How to Scan a QR Code on a Computer or Laptop
Five ways to read a QR code without a phone: upload the image, use your webcam, right-click it in Chrome, screenshot it, or fall back to your phone.
5 min read
How to Scan a QR Code on a Mac or MacBook
Four ways to read a QR code on macOS: Live Text in Preview, your iPhone as the Mac's camera, a right-click in Chrome, or a browser-based decoder.
6 min read
How to Scan a QR Code on Windows 10 and 11
Read a QR code on a Windows PC using the Camera app, a Snipping Tool capture, a browser right-click, or an image upload to an online decoder.
6 min read
How to Read a QR Code From an Image File on Your Computer
No camera is involved when the code is already a PNG, a screenshot or page two of a PDF. Browser decoders, right-click on a local file, Quick Look, the snipping shortcut, and the dead ends.
7 min read
What DPI Does a QR Code Need for Print?
Vector has no DPI and is the right answer whenever the printer takes it. For raster: 300 DPI at final size, plus the CMYK and quiet zone traps.
6 min read
Why Won't a QR Code Scan From Another Screen?
Screens are a harder target than paper. Brightness, moire, refresh banding and minimum focus distance, each with a fix that takes only a few seconds.
5 min read
Scanning a QR Code That Is on the Phone in Your Hand
The camera route does not exist. Long press, screenshot, share sheet and upload, covered separately for iOS and Android, with a note on which ones need nothing installed.
6 min read
How Long a QR Code Has to Stay on a TV Screen
Sizing a code for a sofa three metres away, the dwell time a viewer actually needs, what video compression does to small modules, and why most people photograph the screen instead.
8 min read
What Happens If Your QR Code Generator Shuts Down
Static codes outlive the tool that made them. Dynamic ones depend on a vendor's redirect domain. How to check which you printed and cut the exposure.
5 min read
The QR Quiet Zone: Why 4 Modules of Margin Is the Spec
Four modules of clear margin is a structural part of the symbol, not styling. What eats a quiet zone in print, and why the number scales with the code.
6 min read
Two QR Codes on One Label Without Either One Failing
The minimum separation between two codes measured in modules, why some readers take the nearest and others the first found, and the cases where one dynamic code beats two printed ones.
7 min read
Direct Part Marking and Why It Is Usually Not a QR Code
Laser, dot peen and chemical etch make marks with no pigment at all. Why Data Matrix takes a fifth of the area, when QR still wins, and why the lamp decides everything.
7 min read
QR Code Colors and Contrast: The Thresholds That Break Scanning
Decoders see lightness, not hue. Why red on black fails, how gradients and CMYK erode contrast, and the grayscale check that catches it in five seconds.
6 min read
QR Code Logos: How Big Is Too Big, and Why They Work
Error correction repairs what a logo covers, but the 30% figure is a ceiling shared with real damage. Where to place it, how small to keep it, and why.
6 min read
GS1 Digital Link QR Codes: What Retail's 2D Barcode Shift Means
GS1 Digital Link puts a GTIN inside a web URL so one symbol can serve the checkout scanner and the shopper's phone. What Sunrise 2027 means for brands.
5 min read
Food Truck QR Codes for Daily Locations and Preorders
Your pitch moves daily but the printed sticker cannot. Run one code you repoint each morning to today's spot, closing time and the preorder link.
6 min read
Salon QR Codes: Rebooking at the Chair and Review Asks
Two codes, two moments: rebooking at the mirror while the client is still in the chair, and the review ask once they have gone home and lived with it.
6 min read
Dental Practice QR Codes for Patient Intake Forms
Get medical history finished before the patient arrives: where the code belongs, what the form should ask, consent wording, and the paper fallback.
6 min read
Window Sticker QR Codes for Car Dealerships
A code per VIN on every window sticker, built for people walking your lot after hours: sizing through glass, fast pages, and retiring sold units.
6 min read
Construction Site QR Codes for Safety Inductions
A gate-level QR code that runs induction and sign-in before anyone walks on site, plus equipment tags, subcontractor tracking, and offline fallbacks.
6 min read
Service Sticker QR Codes for Plumbers and Electricians
The sticker on the boiler is the most under-used trade marketing tool there is. Here is what to put behind the code and why it must stay editable.
6 min read
Brewery Taproom QR Codes: Tasting Notes to Club Signups
Your tap list changes weekly, so the code behind it has to change too. Building tasting-notes pages, getting allergens right, and earning club signups.
6 min read
What a 3-Location Bakery Should Measure with QR Codes
A modelled three-shop bakery: which QR codes each site needs, what to judge each one on, and how to catch staff scans quietly inflating your counts.
6 min read
Apartment Maintenance Requests by QR: A Setup Playbook
Unit codes, common-area faults, per-appliance model numbers, and the emergency case where a maintenance form is flatly the wrong channel to offer.
6 min read
Library Shelf QR Codes for Ebooks, Holds and Events
Shelf-end codes that open the ebook edition, hold placement when the copy is out, program signups and room bookings, with tracking a library can defend.
6 min read
Parking Lot QR Codes for Payment and Permit Checks
Bay-level payment codes, permit validation, night-readable signage, and how to spot and prevent a fraudulent sticker placed over your real parking code.
6 min read
Self-Guided Walking Tour QR Codes: Stop-by-Stop Setup
Numbering stops so nobody gets lost, pages that load on one bar of signal, an offline fallback, weatherproof plaques, and reading the drop-off curve.
6 min read
Treasure Hunts and Crosswords Built on QR Codes
Fifty scans an hour on a school network, sequencing that nobody can skip, surviving one missing code, and why a wrong clue is a page edit rather than a reprint.
8 min read
How to Make a QR Code in Canva (and When Not To)
A plain walkthrough of building a QR code inside Canva, plus the three limits nobody mentions: fixed destinations, no scan data, and design-tool exports.
6 min read
USPS and Amazon Return QR Codes: How They Work
Label-free returns explained: what the QR code from a retailer really carries, why it expires, and what to do when the counter scanner will not take it.
6 min read
Scanning QR Codes With Google Lens
How to read a QR code with Google Lens from the camera, your photo library, an iPhone or a desktop browser, and when the plain camera app is the faster tool.
6 min read
Visit Japan Web QR Codes for Immigration and Customs
How Visit Japan Web QR codes fit into arriving at a Japanese airport, and the preparation that keeps them working when terminal connectivity does not.
6 min read
QR Code Stickers: Materials, Printing and Placement
Paper or vinyl, matte or gloss, and the adhesive that quietly fails in a freezer. How to spec a QR sticker that still scans after a winter outdoors.
6 min read
Zelle and Cash App QR Codes for Getting Paid
Taking payment from a printed square at a market stall: the trust rules that keep customers paying, the sticker-swap risk, and when to use a processor.
6 min read
Where to Find Your QR Code in the Apps You Use
Where the code hides in social, payment, networking and music apps, why the path keeps moving between versions, and when to generate your own instead.
6 min read
QR Code Tattoos: Do They Actually Scan?
Ink spreads, skin curves, contrast drops. What makes a tattooed QR code readable, how to test the design before the needle, and the permanence problem.
6 min read
Scanning a QR Code on a Galaxy Phone Without Guessing
One UI ships five different scanners and keeps moving the switch for the main one. Photo mode, the Quick Settings tile, Bixby Vision's retirement, and why an iPhone reads the same code first.
7 min read
Which Phones Have a Built-In QR Code Scanner and Where It Hides
iPhone, Pixel, Samsung, Xiaomi and Huawei each put the decoder somewhere different, and some ship it switched off. The three paths that exist on every one of them, without an install.
6 min read
QR Codes That Stop Scanning After Lamination or Gloss
Matte scatters light, gloss throws it straight back at the camera. How lamination, spot UV and foil kill a working code, plus the proof test that catches it.
5 min read
Choosing a Stand or Table Tent for a QR Code
The holder decides the angle a phone meets, and the angle decides the scan. Acrylic glare, table against counter height, quiet zones eaten by a slot, and the cleaning rules nobody writes down.
6 min read
Printing QR Codes on Curved Surfaces and Fabric
Curved packaging warps the module grid and fabric texture eats module edges. What to change in size, payload and placement before you order the production run.
5 min read
QR Code Patches and Woven Labels: What Thread Can Actually Hold
Embroidery cannot hold a module edge below about 1.5 mm, and that sets the patch size before anything else. Stitch compensation, woven label anisotropy, transfer film and the dark-garment underbase.
7 min read
QR Codes on Glass and Windows: Beating Reflections
Reflections, the street showing through the glass and afternoon sun all break a window code. Placement, backing and testing that keep a storefront scannable.
5 min read
Auditing QR Codes: Finding Dead Codes in the Wild
How to inventory QR codes your organization printed years ago, test where they still point, and catch the ones quietly sending scans nowhere useful.
6 min read
Change a Printed QR Code's Destination Without Reprinting
The old URL is dead and the posters are already up. What you can actually do about a printed QR code, and how the answer changes if it was made static.
6 min read
Blank and Placeholder QR Codes in a Mockup
A mockup needs a code before the destination exists. Why a stock code and a drawn grid are both liabilities, and the placeholder that doubles as the finished artwork.
6 min read
Naming Conventions for Managing Thousands of QR Codes
Bulk generation is the easy part. A label schema, folders, version suffixes, and an archive rule keep three thousand codes from becoming an unreadable list.
6 min read
Managing QR Codes Across a Team: Roles and Permissions
A live destination on printed material can be changed by anyone with access. Roles, approvals, named ownership, and offboarding as a production control.
6 min read
Alt Text and Screen Readers for QR Code Images
Alt text on a QR image should name the destination, never say QR code. Markup for web, email, and PDF, plus what replaces alt text on printed material.
5 min read
QR Codes on Vehicle Wraps and Moving Surfaces
Curves, motion, and distance at once. How to size, place, and finish a code on a vehicle wrap so it scans from the curb while the van is parked at a job site.
6 min read
goqr.me Alternative: When a Free Static Tool Runs Out
goQR.me gives you free vector exports and no sign-up, but static codes cannot be edited or tracked. What to check before moving to a dynamic tool.
6 min read
ME-QR Alternative: Ads, Limits, and What to Use Instead
ME-QR keeps free dynamic codes alive forever and pays for it with ads in the scan path. How to judge that trade, and what to check before you switch.
6 min read
QR Code Chimp Alternative for Teams and Bulk Campaigns
QR Code Chimp is strong on design and business cards, but SVG is not a normal download. What teams running bulk print campaigns should check first.
6 min read
Scanova Alternative: What Happens When the Trial Ends
Scanova states that dynamic codes made during the free trial stop working when it ends. What that means for anything printed, and how to evaluate safely.
5 min read
QRStuff Alternative: Dynamic Codes and Scan Tracking
QRStuff covers 50+ content types with no sign-up, but vector export is paid and its own pages differ on free-tier expiry. What to clarify before printing.
5 min read
Adobe Express QR Codes: Limits and a Trackable Alternative
Adobe Express puts a QR code straight into your design, but the codes are static. Here is what that means after printing, and when to track scans instead.
6 min read
Wix QR Code Generator Alternative for Editable Links
Wix documents its QR tool well: static images, no expiry, unlimited scans, free SVG. See when that fits and when you need an editable, tracked link instead.
6 min read
Shopify QR Code Apps vs a Standalone Generator
Shopify has no built-in QR feature, so codes come from third-party apps. What that integration buys you, what breaks on uninstall, and where standalone fits.
6 min read
Unitag Alternative: European Hosting, GDPR and What to Check
Unitag positions itself as an enterprise, Europe-hosted, GDPR-focused QR platform. Here are the data residency and contract questions to ask before you sign.
6 min read
How QR Code Generator Pricing Actually Works
QR tools price on a few structural models, not just a number. How to read a plan page for code metering, vector export, and what happens if you stop paying.
6 min read
White-Label QR Platforms: What Agencies Should Check
Reseller criteria for QR platforms: custom redirect domains, sub-accounts, data ownership, exportable inventory, and the questions to ask before a print run.
6 min read
WiFi QR Codes for Airbnb and Short-Term Rentals
Self check-in means nobody reads out the password. Where to put a WiFi QR code in a rental, how to handle turnover, and what to print beside it.
6 min read
How to Find Your WiFi Password to Make a QR Code
You need the password and the security type before you can build a WiFi QR code. Six realistic ways to find both, plus what to do about special characters.
6 min read
Sharing WiFi Without a QR Code: What Your Phone Already Does
Phones can hand a saved WiFi password to a nearby device with no printing. Here is where the built-in flows win, and where a printed card still beats them.
5 min read
WhatsApp QR Codes for Business: The Complete Setup Guide
How to set up a WhatsApp QR code for business: correct wa.me number format, pre-filled messages, smart print placements, and when to go dynamic.
5 min read
Instagram QR Codes: How Print Becomes Followers
How print becomes Instagram followers: choosing profile, post, or reel targets, placements that convert, branded codes vs the nametag, and tracking.
5 min read
Video QR Codes on Packaging: Tutorials That Cut Returns
Why a 90-second tutorial video behind a packaging QR code cuts returns and tickets, plus hosting trade-offs, filming rules, and updatable destinations.
5 min read
QR Codes for Tips and Small Payments: Links, Fees, and Etiquette
PayPal.me, Venmo, and Stripe payment links compared for tip QR codes: fee math on small amounts, presets vs open amounts, sign wording, and shared codes.
5 min read
vCard QR Codes Explained: The Format, the Fields, and What Phones Ignore
How the vCard format inside a QR code works: which contact fields phones import reliably, why photos break printed codes, and when a hosted page wins.
5 min read
PDF QR Codes: Hosting, File Size, and Swapping the File Later
Where the file behind a PDF QR code should live, why cloud-drive share links rot, size targets for mobile scans, and how to update a printed code.
5 min read
QR Codes on Resumes and Portfolios: What to Link, Where to Put It
What a resume QR code should link to (and what wastes the scan), how ATS parsers treat it, print sizing on A4, and tailoring the link per application.
5 min read
How QR Code Ticket Validation Actually Works
What sits inside a ticket QR code, how single-use validation and offline checks work, and why screenshots are the real threat to manage at the door.
5 min read
Event Check-In With QR Codes: From Guest List to Door Flow
How to run event check-in with QR codes: per-guest vs shared codes, real door throughput, walk-ins, a dead-WiFi fallback, and the attendance data you keep.
5 min read
QR Code Survey Response Rates: The Baseline and the Four Levers That Move It
Receipt-bottom QR surveys often convert under 5 percent. The four levers that raise response rates: timing, question count, honest incentives, load speed.
5 min read
QR Code Coupons: Tracking Redemptions From Shared Codes to the Till
Shared versus unique QR coupon codes, three ways to redeem at the till, expiry timing, screenshot leakage, and the two rates that show if a campaign worked.
5 min read
The Lost-Pet QR Tag Playbook: What to Put on It and How Recovery Works
What to put on a lost-pet QR tag profile, what to leave off, the finder's one-tap flow, why the tag complements a microchip, and the engraved fallback.
5 min read
PDF Menu vs Web Menu: Choosing the Right QR Menu
PDF menu QR codes against built web menus: phone readability, file weight on cellular, price edits, translations, and a migration path with no reprint.
5 min read
Eight QR Menu Mistakes That Lose Customers (With Fixes)
Eight QR menu mistakes that cost restaurants orders, from tiny table tents and window glare to dead links and 20 MB PDFs, with a concrete fix for each one.
5 min read
QR Table Ordering: What Happens Between Scan and Kitchen
How QR table ordering works behind the scenes: table codes, the route an order takes to the kitchen, pay-now against pay-later, and what floor staff stop doing.
5 min read
Digital Punch Cards: QR Loyalty Without an App
How to run a punch-card loyalty program on QR codes: stamp mechanics, stopping self-stamping, reward math near a 10 percent giveback, and reading scan data.
5 min read
UTM Tracking for QR Codes: A Convention That Holds Up in GA4
A practical UTM convention for QR code campaigns: source, medium, and content values, how to read the results in GA4, and the mistakes that corrupt the data.
5 min read
Google Review QR Codes: The Rules, the Link, and the Placement
How to get your direct Google review link, what the review gating and incentive rules actually prohibit, and the placements where a review QR code earns scans.
5 min read
QR Codes on Product Packaging: Design Rules That Survive the Print Run
Packaging QR rules that survive production: sizing by scan distance, curvature limits, flexo dot gain, seams, substrate contrast, and a pre-run test protocol.
5 min read
Open House Sign QR Codes: Size, Destination, and Lead Capture
Yard sign QR codes for real estate agents: sizing for the curb, linking to the listing, capturing after-hours leads, and repointing codes when homes sell.
5 min read
Why Transit Ticket QR Codes Work Underground With No Signal
Fare gates verify a signed ticket locally in a fraction of a millisecond, which is why the code still works in a tunnel. The same design decides when a screenshot opens the barrier.
7 min read
Medical ID Bracelets With a QR Code: What Has to Be Engraved Anyway
A wearable code has to open a plain page with no app, no login and no signal. How to structure that page, why engraving still carries the critical text, and the public-versus-gated trade.
8 min read
Equipment Asset Tags: The Manual, the Service Log, and Who to Call
Put a QR code on every machine so the manual, the parts list and the repair history are one scan away. Numbering, label materials that survive a workshop, and what belongs on the page.
8 min read
One QR Code Per Unit: The Tenant Handbook That Never Goes Stale
A single code inside each rental answers the questions tenants call about: wifi, appliances, bin day, and how to report a repair. Print it once and repoint it at every turnover.
8 min read
Memorial QR Codes: What Families Want, and the Question to Ask First
A code on a headstone or memorial card opens an obituary, photographs and tributes. What belongs on the page, which plaques survive outdoors, and the honest question about how long any of it lasts.
9 min read
Transparent Background QR Codes: What Works and What Stops Scanning
PNG and SVG carry an alpha channel and JPG never will, so the format was rarely the obstacle. What transparency costs a decoder, what most people actually want instead, and what we export.
6 min read
Rickroll QR Codes: Why the Patch on Your Jacket Does Not Scan
Thread, spray paint and vinyl all soften module edges. What error correction level H is doing for you, the smallest module a stitched fill can hold, and why pointing a code at somebody else's video kills it.
6 min read
Free QR Codes That Do Not Expire: What Can Actually Be Switched Off
Nothing in the QR format can expire, which is why every generator can promise it. The redirect behind a dynamic code is a different matter. How to check in thirty seconds, and what we do instead.
6 min read
How to 3D Print a QR Code That Scans
A printed code has no ink, so contrast comes from a filament swap or from shadow. Module size against nozzle width, why matte beats glossy, and the relief code that fails with the torch on.
6 min read
Choosing Paper for a QR Code: Coated, Uncoated and Recycled
Uncoated stock drinks ink and fattens every dark module, gloss throws a highlight into the lens, recycled fiber breaks small ones. How the sheet decides the scan.
7 min read
Getting a QR Code Onto a Business Card That Still Scans
85 by 55mm leaves room for a 25mm footprint and not much else. Minimum size on card stock, bleed and safe margins, the finishes that kill a scan, and codes on coloured stock.
6 min read
A QR Code Children Can Color In Without Breaking It
A decoder reads light against dark, not color. Which parts of a coloring sheet a child can fill freely, the three squares that must stay untouched, and how to lay the page out.
7 min read
Where a QR Code Fits on a French Electronic Invoice
Since 1 September 2026 a French B2B invoice travels as structured data through a plateforme agréée. A payment or portal code lives in the readable layer only, which is not the layer your customer's software acts on.
7 min read
France Stopped Printing Receipts by Default. Where the Code Goes Now
The loi AGEC ended systematic printing of till receipts in August 2023. The CNIL prefers a receipt you collect without handing over an email, which is exactly what a per-transaction code at the till does.
7 min read
What a French QR Menu Does Not Replace: Prices Outside, Allergens in Writing
French price display rules predate the smartphone and still bind. A code can carry allergen information by name, but it cannot be the price display a passer-by is entitled to read from the pavement.
7 min read
The Page Behind a Code Is a French Website, Footer or Not
A visitor arriving from a sticker never sees your homepage or your footer. Under French law that one page still owes mentions légales, and the identification obligation moved article in 2024.
7 min read
Donation Codes for a French Association, and the Receipt You Owe Afterwards
A code on a collection box raises money in seconds and leaves you with a bank line and no donor name. What the reçu fiscal needs, and the two French obligations that arrive with it.
7 min read
Wine E-Labels in France: The Rules for the Ingredients QR Code
A wine e-label QR code may carry ingredients and nutrition, but energy and allergens stay on the bottle and the page must not track scans or sell anything.
7 min read
2D-Doc: The Code on French Tax Notices Is Not a QR Code
2D-Doc is the signed Data Matrix on French tax notices and bills. What it holds, how a 2D-Doc reader verifies it, and why a phone camera or QR generator cannot.
6 min read
Shipping a Vinted or Leboncoin Parcel With a QR Code, No Printer
How the QR code for a Vinted Go or Leboncoin Mondial Relay parcel works with no printer, where each one is scanned, and the fake payment QR scam to avoid.
6 min read
