Walk into most prepress departments and you will find skilled people doing unskilled work. Opening PDFs one at a time. Checking fonts, image resolution, colour space and bleed. Emailing customers about the same three problems they had last month. Then waiting for a new file and checking it all again.
On our homepage we say operators can spend half their day on this instead of moving jobs towards the press. Here is why we say it, and what it costs.
Most incoming files are not ready to print
A survey run by Readex Research for Enfocus, with nearly 5,000 responses from designers, publishers and printers, found that around 40% of incoming PDFs had not been preflighted at all. Only 26% were PDF/X compliant, and just 11% met the Ghent Workgroup specifications. The most common faults were the ones every prepress operator knows by heart: fonts not embedded, low resolution images and RGB colour where CMYK was needed.
That survey is a few years old, but nothing we see in printers today suggests designers have got much better at sending files. If anything, more files now come from people who are not designers at all, uploading straight from an office application or an online tool.
Where the operator's day actually goes
Checking a file is rarely the slow part. The time disappears in everything around it:
- Opening each file and working through the same checks by eye.
- Deciding whether a problem can be fixed in house or needs to go back to the customer.
- Writing the email, chasing a reply and matching the new file to the right job.
- Checking the replacement file from scratch.
- Rescheduling the press slot the job was meant to fill.
Multiply that by dozens of jobs a day and half a day is easy to reach. It is also not just a print problem. A 2026 survey of 1,002 US office workers commissioned by Smallpdf found 23% spend at least four hours a week dealing with file problems, and 26% had considered leaving a job because of inefficient document processes. In prepress, file problems are the job.
Every rejected file is money left on the floor
A rejected or late file costs you in several places at once. The operator's time. The customer service time spent chasing. The press slot that sits empty or gets filled with something less urgent. And, if the problem slips through, a remake that wipes out the margin on the job.
A simple way to put a number on it: take the fully loaded cost of your prepress operators and multiply it by the share of their time spent checking and fixing rather than preparing jobs for press. For three operators costing £40,000 a year each, spending half their time this way, that is £60,000 a year before you count a single reprint.
What automated preflight changes
Automated preflight does not replace your prepress team. It takes the repeatable checks off their desks so they deal only with the files that genuinely need a person.
- Every file is checked on arrival against a profile for that product, in seconds, using tools such as callas pdfToolbox or Enfocus PitStop.
- Safe fixes happen automatically, for example converting colour with your agreed profile or normalising page boxes, and every change is logged.
- Customers get a clear report straight away when something cannot be fixed, so the chase starts in minutes rather than hours.
- Only exceptions reach an operator, already sorted and explained.
The gains can be large. In the Enfocus Workflow Automation Report, one time study saw a single prepress operator go from 15 jobs per shift to 60 after adding PitStop Pro and Action Lists. Your numbers will differ, but the direction is consistent.
Start by measuring
Before buying anything, count for one week: how many files arrive, how many need a person to touch them, and roughly how long each takes. That gives you a baseline, a business case and a way to prove the change worked.
// how we can help
We set up automated preflight and safe fixes around your products and customers, so your operators only see the files that need them.
Also useful: Workflow audit
Sources: Survey shows 40% of PDFs not preflighted (PrintWeek, Readex Research for Enfocus); Enfocus Workflow Automation Report, October 2019; File errors cost firms and push stressed staff to quit (IT Brief UK, Smallpdf survey).