The Small Pack Problem
Regulatory authorities require the full ingredient list on pre-packed food. For products with complex formulations or very small packaging (single-serve sachets, confectionery, small condiment portions), fitting the full ingredient list in a legible font can be impossible.
QR codes that link to an online full ingredient list provide a practical solution in these constrained formats.
Current UK Regulatory Position
Under UK Food Information Regulations, the full ingredient list must appear on the physical label. There is currently no provision to replace the on-pack ingredient list with a QR code link.
However: The FSA and Defra are actively reviewing digital labelling frameworks. Several EU member states are piloting QR-supplemented labelling. Monitor FSA announcements for changes to digital labelling rules post-Brexit.
Current best practice: Mandatory label on pack (even if very small font) + QR linking to enlarged, accessible digital version.
QR Ingredient List Page Design
The digital ingredient list linked from the QR should:
- Replicate the on-pack ingredient list exactly — no discrepancies
- Display in large, accessible font (minimum 16px)
- Bold the 14 major allergens inline (e.g., "contains MILK, WHEAT flour")
- Include allergen cross-contamination advisory
- Show the product name and batch code so consumers can verify they scanned the right product
- Be accessible to screen readers (text-based, not a scanned PDF image)
Version Control for Ingredient Pages
When a recipe changes:
1. Update the digital ingredient list immediately
2. Implement the physical label change at the next print run
3. Document the effective date of each recipe change against batch numbers
4. If the change affects an allergen, prioritise physical label change — consumers with severe allergies cannot rely on QR for real-time information
Putting this into practice
Start with the smallest real test you can run. Generate the code, print it at the exact size you plan to use, and scan it with two different phones in the lighting where it will live. Check that the destination page loads quickly on a mobile connection and that the call to action next to the code tells people what they will get. If anything feels slow or unclear, fix it before you print a full batch, because reprints cost more than a short test. Keep a note of the size, material, and placement that worked so the next batch starts from a proven setup.
Common mistakes to avoid
The most common mistakes are easy to avoid once you know them. Long payloads make modules tiny, low contrast makes edges hard to read, and text placed too close to the border eats the quiet zone the scanner needs. Covering a corner finder pattern with a logo or a sticker breaks detection entirely, and a code placed behind glare or on a curved surface fails even when the print is perfect. Review each of these points on a proof copy, and treat any failure as a reason to adjust the design rather than a reason to blame the scanner.
Quick checklist
- Keep the payload as short as practical so modules stay large.
- Keep dark modules on a light background with strong contrast.
- Leave a clear quiet zone on all four sides of the symbol.
- Test the printed code at the real viewing distance and lighting.
- Confirm the destination page loads fast on a phone.
- Recheck the code after any change to the link, design, or placement.
Related tools and guides
- For local payments, the [Pakistan payment QR](/pakistan-payment-qr) page explains the regional flow and what customers see.
- The [regional payment QR](/regional-payment-qr) guide covers payment codes used across different markets.
- Check print proofs with the [printed QR tester](/printed-qr-tester) so problems show up before a full run.
- The [QR placement guide](/qr-placement-guide) covers height, lighting, glare, and surfaces that affect scan success.
- The [bulk generator](/bulk-generator) builds many codes from a table when one-off generation would take too long.
- Test every code with the [QR scanner](/qr-scanner) on more than one phone before you publish or print it.
