Inventory QR code generator free

Method

How to generate a stock QR code that actually lasts

Three technical choices separate a QR that lasts 2 years from one that cracks after 3 months. First, error correction: "L" (7%) is fine for clean indoor labels; "H" (30%) is mandatory if the label may get dirty, hit or cold. Second, format: SVG for professional printing (vector, no pixelation), PNG 512px for office printing. Third, encoded content: a short identifier (SKU) uses fewer modules than a long URL → the QR remains readable even if partially damaged.

• Dry warehouse: M (15%) is enough
• Workshop or kitchen (grease, water, impacts): use H (30%)
• Customer-facing labels on shipped products: Q (25%)

QR vs barcode

QR code, EAN-13 barcode, Data Matrix: which to pick?

EAN-13 (linear) stores 13 digits and needs an aligned laser or camera reader — the retail standard. QR codes store up to 4,296 characters, read in any orientation, work with any smartphone. Data Matrix (dense square) packs as much data as a QR but smaller (great for electronics) — less smartphone-friendly. For SMB inventory, QR is almost always right: universal, smartphone-readable, label-efficient.

Sizing

What size QR for what scan distance?

Rule of thumb: QR size = ~10% of the scan distance. A QR scanned at 30 cm needs to be at least 3 cm wide. Pallet labels scanned from 1 m need 10 cm. Below 2 cm, even at H level, smartphones struggle. The 24-per-A4 layout (Avery L7159) gives ~6 cm QRs — perfect for handheld shelf scans.

Static vs dynamic

Static vs dynamic QR codes: a trap to avoid

A "static" QR contains the data directly (SKU, URL, text) — that is what this tool produces, and that is what you want for stock. A "dynamic" QR contains a short URL that redirects to a real URL (editable later) — handy for marketing, disastrous for stock because if the redirect service shuts down, all your QRs become useless. For shelf and product labels, stay static with a stable reference.

Printing

How to print a QR that lasts (paper, ink, lamination)

For long-life QR labels: 120 g/m² paper minimum, laser ink (not inkjet, which smudges with humidity), lamination or transparent self-adhesive film against abrasion. In kitchens or damp cellars: polypropylene self-adhesive labels (5 to 15 € per A4 sheet on Amazon or office suppliers). Avoid plain paper at the foot of a shelf — condensation and dust kill it within 2 months.

Use cases

Three concrete SMB examples

Case 1 — Retail backroom: one QR per shelf encoding the zone (e.g. SHELF-A3). Staff scan to see what should be there. Case 2 — Mechanical workshop: one QR per parts bin encoding the reference (e.g. SCREW-INX-M6). Scanning triggers automatic replenishment. Case 3 — Restaurant: one QR per ingredient lot encoding SKU + expiry date. Kitchen scans to apply FEFO without re-reading manual labels.