Every printed pack passes through several pairs of eyes and a surprising number still reach the shelf with a misspelling, a wrong net weight or an outdated certification mark. The reason is rarely carelessness. It is that proofs get reviewed for design rather than for content, by people who already know what the text is supposed to say and therefore read what they expect.
What should be checked on a print proof? Four categories: legal and regulatory text, commercial data, brand copy, and technical marks. Each has a different owner in most organisations, and bundling them into one review by one person is how errors survive. A written checklist per category, signed off separately, catches what a general look does not.
Which legal text goes wrong most often? Ingredient and allergen panels, nutrition declarations, net content, warnings, and country of origin. These are transcribed from source documents, and transcription is where decimal points, units and word order drift. Comparing the proof against the source document line by line – not against the previous pack – is the only reliable method, because the previous pack may carry the same error.
Why is the barcode a proofreading item? Because a wrong barcode is invisible until a retailer scans it. Check the number against the product record, confirm the symbology and size meet the retailer’s requirement, and verify the quiet zones and placement. A barcode that scans in the office can still fail a retail scanning test if it is printed too small or too close to a fold – the rules are set out in the barcode and QR code guide.
Who should sign off? Someone with authority over the content, not only over the aesthetics. In practice that means a named approver for regulatory text, a named approver for commercial data, and a named approver for brand copy – with one person accountable for the final signature. Proofs signed by committee tend to be signed by nobody.
Should the proof be read on screen or on paper? Both, ideally. Screen reading catches layout and colour issues; printed reading catches text errors, because the eye moves differently across paper. A useful habit is reading the text backwards, line by line, which forces attention onto spelling rather than meaning.
How does version control prevent errors? By making the current version unambiguous. Name files with a date and a revision letter, keep one master file, and never print from an emailed copy that might be older. Where a pack exists in several languages or several sizes, the risk multiplies and a single revision log becomes essential – the same discipline applies to artwork generally, as covered in the artwork files guide.
What about text that changes with the print run? Variable data – batch codes, dates, serials – is generated at press rather than on the proof, so it needs its own verification. Ask for a sample of the variable data as printed, not as designed, and confirm the format and position against what the filling line and the retailer expect.
What does a proof actually approve? Structure, colour and content as shown. It does not approve deviations that appear at press. If the printed result differs from the signed proof, the proof is the reference – which is why a physical signed copy should exist in two places, and why the tolerance conversation should happen before signing rather than after. The colour side of that is covered in the colour proofing FAQ.
How much does a reprint cost compared to a check? A reprint costs the full production run plus freight plus the schedule disruption, and often a retailer chargeback on top. A proofreading hour costs an hour. The asymmetry is extreme, and yet the check is the step most often compressed when a launch date is tight – which is exactly when it matters.
If you want a second pair of eyes before signing, send the proof PDF and we will read it against your specification at our Wuhan plant and list what looks inconsistent. Start with the quote request page.
Chengtop prints cajas plegables, cosmetic packaging and rigid boxes at our Wuhan plant and returns a proof for written approval before any run begins. Message us with the artwork status and we will tell you what we need to start.
