# QR codes for business cards

> Put a QR code on a business card without ruining the design. Minimum sizes, safe placement, vCard vs link, and print specifications.

Source: https://qr-code-build.com/qr-code-for-business-cards/  
Last reviewed: 2026-08-24  
Publisher: QR Code Builder

## Summary
A QR code on a business card should be at least 20 mm square with a clear four-module quiet zone, printed matte, and encoding either a vCard for instant contact saving or a short link to your profile. Below 20 mm, module size drops under the practical scanning floor.

## The 20 mm floor
A vCard with name, title, company, mobile, email and website lands around 180 bytes — a version 9 code, 53 × 53 modules. At 20 mm wide with the quiet zone, each module is about 0.33 mm, which is already marginal. At 25 mm it is 0.41 mm, which is reliable.

| Code width | Module size at v9 | Verdict |
|---|---|---|
| 15 mm | 0.25 mm | Fails often |
| 20 mm | 0.33 mm | Marginal — trim the vCard fields |
| 25 mm | 0.41 mm | Reliable |
| 30 mm | 0.49 mm | Comfortable, but dominates the card |

Two ways to buy margin: cut vCard fields to shrink the version, or encode a short link to an online card instead. A 22-character URL is a version 2 code at 25 × 25 — modules nearly twice the size in the same 20 mm.

Placement: bottom right of the reverse side, with the quiet zone respected. Never bleed a code to the card edge, and never place it across a fold or a rounded corner.

## What the code should contain
|  | vCard | Short link |
|---|---|---|
| Saves contact instantly | Yes | Only after a tap |
| Works offline | Yes | No |
| Updatable after printing | No | Yes, change the page |
| Code density | Higher — bigger print needed | Low |
| Can include a photo or portfolio | No | Yes |
| Tracking | None | Yes, on your own domain |

vCard for roles where the details are stable and the moment matters — trades, sales, conference floors. A link for roles where the details change or the profile is the point — consultants, designers, anyone whose portfolio does the selling.

## Specifications for the printer
- **Send vector.** An [SVG](/qr-code-svg/), with the finished width in millimetres stated in the job notes.

- **Matte finish.** Soft-touch and matte laminates are fine. Gloss and spot UV over the code cause reflection failures.

- **100% black, not rich black.** Four-colour blacks can misregister on cheap presses, softening every module edge.

- **Mind the stock.** Uncoated and textured card spread ink; add 10–15% to the code size.

- **Not on a dark card.** Inverted codes fail on older scanners. If the card is black, put the code in a light panel.

- **Proof before the run.** Print one card at final size and scan it with two phones.

## Frequently asked questions
### How small can a QR code be on a business card?
20 mm is the practical floor for a full vCard, and 25 mm is comfortable. Below that, module size drops under 0.3 mm and scanning becomes unreliable.

### Should the code hold a vCard or a link?
A vCard if the details are stable and you want instant saving offline. A link if the details change or you want a portfolio behind it.

### Where should the code go on the card?
Bottom right of the reverse, with a clear quiet zone. Never across a fold, a rounded corner, or bleeding to the edge.

### Can I put the code on a black card?
Only inside a light panel. Light-on-dark inverted codes fail on a significant share of scanners.

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Licence: this page may be quoted with attribution to QR Code Builder (https://qr-code-build.com/qr-code-for-business-cards/).